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GI ANAT > PELVIC CAVITY > Flashcards

PELVIC CAVITY Flashcards

1
Q

What is the most inferior portion of the abdominopelvic cavity? (Hint: A cavity)

A

Pelvic Cavity

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2
Q

What bony structure surrounds the pelvis?

A

PELVIC GIRDLE (bony pelvis - it’s part of the appendicular skeleton)

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3
Q

What are the 2 subdivisions of the Pelvis?

A

Greater Pelvis
Lesser Pelvis

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4
Q

What 3 bones help form the pelvic girdle?

A

Left Hip Bone
Right Hip Bone
Sacrum

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5
Q

What are the 3 main regions on the Left and Right Hip Bones?

A

Ilium (fan-shaped bone that has a wing called the ALA)
Ischium
Pubis

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6
Q

What forms a rim between the ASIS and PSIS? (Hint : It’s on the ILLIUM)
What vertebral level is this structured found at?

A

ILLIAC CREST
L4

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7
Q

What do we call the ANTEROMEDIAL surface of the ALA?

A

ILLIAC FOSSA

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8
Q

The Ischial Ramus of the ischium and the inferior ramus of the pubis helps form what opening?

(Remember.. Ischium has a body and a ramus).

A

Obturator Foramen

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9
Q

The postero-inferior protuberance on the ischium is called?

A

ISCHIAL TUBEROSITY

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10
Q

The postero-medial projection on the ischium is called?

A

ISCHIAL SPINE

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11
Q

What 2 structures does the Pubis have?

A

Body
SUPERIOR and INFERIOR RAMUS

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12
Q

Where is the pubic crest located? (like where on the left/right hip bone)

A

Body of Pubis

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13
Q

Where does the pubic crest end laterally? What do we call this location?

A

PUBIC TUBERCLE

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14
Q

The superior ramus of the pubis has an oblique ridge that is called? (Hint: it is continuous with the arcuate line)

A

PECTEN PUBIS

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15
Q

What do the ILLIUM, ISCHIUM, PUBIS contribute to?

A

ACETABULUM

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16
Q

The fusion of the S1-S5 vertebrae are called?

Remember.. the sacrum has a sacral promontory on the top/anterior edge of the body of the 1st sacral vertebrae.

A

SACRUM

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17
Q

What structure do the ventral and dorsal rami of S1-S5 spinal nerves pass through?

A

ANTERIOR and POSTERIOR SACRAL FORAMINA

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18
Q

What is considered the inferior end of the vertebral canal?

A

SACRAL CANAL

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19
Q

What structure is formed by the LOSS of the laminae and spinal process of S4 and S5?

This structure is where we would give caudal anesthesia during labor

A

SACRAL HIATUS

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20
Q

What are the 2 subdivisions of the PELVIS?

What divides the PELVIS ?

A

GREATER PELVIS (FALSE PELVIS) –> everything above the pelvic brim/inlet
LESSER PELVIS (TRUE PELVIS) –> everything below the pelvic brim/inlet (everything between pelvic inlet and and pelvic outlet)

PELVIC INLET

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21
Q

What is the bony ridge that surrounds the pelvic inlet?

What forms this structure?

A

PELVIC BRIM

ALA of ILLEUM, SACRAL PROMONTORY, LEFT and RIGHT LINEA TERMINALIS

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22
Q

What forms the LINEA TERMINALIS ? (There is a right and left linea terminalis)

A

ARCUATE LINE, PECTIN PUBIS, PUBIC CREST

It is a continuation of these 3.

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23
Q

What forms/ are the borders of the PELVIC OUTLET?

A

TIP OF COCCYX
PUBIC ARCH
SACROTUBEROUS LIGAMENTS
ISCHIAL TUBEROSITY

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24
Q

Between the articular surfaces of the sacrum and ileum, what joint is there?
What type of joint is it? (WIERD ONE)

Why is this joint weird?

A

SACRO-ILLIAC JOINT

Consists of ANTERIOR SYNOVIAL JOINT and POSTERIOR FIBROUS JOINT (has limited mobility)

Because it is both synovial and fibrous. There is a fibrous part of the joint thanks to the tuberosities that form a posterior SYNDESMOSIS (fibrous joint).

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25
Q

What ligaments help support the SACRO-ILLIAC JOINT? (3)

A

ANTERIOR and POSTERIOR SACRO-ILLIAC LIGAMENTS
INTEROSSEUOUS SACRO-ILLIAC LIGAMENT

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26
Q

What maintains the AP diameter and doesn’t allow the coccyx to swing back too much when we put our weight on the sacrum? (Hint: 2 ligaments)

These ligaments provide resistance to the sacroilliac region upon sudden weight increase on the vertebral column.

A

SACROTUBEROUS LIGAMENT
SACROSPINOUS LIGAMENT

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27
Q

When the bodies of the pubic bones unite, what structure do they form?

What type of joint is this?

A

PUBIC SYMPHISIS

SECONDARY CARTILAGINOUS JOINT

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28
Q

The subpubic angle aka pubic arch is what length in males versus females ?

A

MALES : 70 degrees

FEMALES : 90-100 degrees

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29
Q

What forms the LUMBOSACRAL JOINT ? (Hint: combo joint)

A

Intervertebral Joint (between L5 and S1)

2 Zygopophyseal Joints (Common facet joints) (SYNOVIAL JOINTS)

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30
Q

What does the ILIOLUMBAR LIGAMENTS do?

A

They unite the transverse processes of L4 and L5 to the Ilium.

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31
Q

What type of joint is the SACROCOCCYGEAL JOINT? (between the sacrum and coccyx)

A

SECONDARY CARTILAGINIOUS JOINT

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32
Q

What ligaments help reinforce the SACROCOCCYGEAL JOINTS?

A

ANTERIOR and POSTERIOR SACROCOCCYGEAL LIGAMENTS

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33
Q

What hormone helps to relax the pelvic joints and ligaments ? (This hormone increases during the latter half of pregnancy)

A

RELAXIN (helps to relax the sacroiliac joints and the pubic symphysis to allow for about 10-15% increase in diameter) –> helps to facilitate the passage of the fetus through the pelvic canal

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34
Q

What walls makes up the pelvic cavity?

A

ANTEROINFERIOR WALL
2 LATERAL WALLS
POSTERIOR WALL

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35
Q

What forms the pelvic floor?

A

PELVIC DIAPHRAGM

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36
Q

What muscles make up the pelvic diaphragm?

A

LEVATOR ANI
COCCYGEUS MUSCLES

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37
Q

What are subdivisions of the PELVIC FASCIA?

What is found in between the pelvic fascia?

A

PARIETAL PELVIC FASCIA
VISCERAL PELVIC FASCIA

ENDOPELVIC FASCIA

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38
Q

What makes up the anteroinferior wall of the Pelvic Cavity?

A

The bodies and rami of the pubic bones and pubic symphysis

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39
Q

What makes the lateral walls of the pelvic cavity?

A

The hip bones and OBTURATOR FORAMEN, OBTURATOR INTERNUS

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40
Q

What fills in the Obturator Foramen?

A

Obturator Membrane

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41
Q

What does the obturator fascia form? (Hint: It’s a white line that demarcates the obturator internus and Levator Ani)

A

TENDINOUS ARCH OF THE LEVATOR ANI

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42
Q

What muscle covers the obturator foramen?

A

OBTURATOR INTERNUS MUSCLES

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43
Q

What is the function of the OBTURATOR INTERNUS?

What nerve innervates the OBTURATOR INTERNUS?

A

LATERAL ROTATION and ABDUCTION of THIGH

NERVE OBTURATOR INTERNUS (L5-S2)

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44
Q

What muscle is found in the posterior wall of the the Pelvic Cavity?

A

PIRIFORMIS MUSCLE

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45
Q

What is the function of the Piriformis Muscle?

What nerve innervates the Piriformis Muscle?

A

LATERAL ROTATION and ABDUCTION of THIGH

Ventral Rami of S1 and S2

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46
Q

What structures make up the Pelvic Floor?

A

PELVIC DIAPHRAGM which itself is made up of the LEVATOR ANI muscles and COCCYGEUS muscles

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47
Q

What are the 3 parts of the LEVATOR ANI?

A

PUBORECTALIS
PUBOCOCYGEUS
ILLIOCOCCYGEUS

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48
Q

Given that the PUBORECTALIS MUSCLE helps maintain fecal continence, what does it wrap around?

A

It wraps around the ANORECTAL JUNCTION

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49
Q

What body/ligament does the PUBOCOCCYGEUS muscles help form?

A

It helps form part of the anococcygeal body/ligament

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50
Q

What is the posterolateral part of LEVATOR ANI?

A

ILIOCOCCYGEUS MUSCLE

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51
Q

What muscle is seen right under the Iliococcygeal muscle?

A

COCCYGEUS Muscle

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52
Q

What is the function of the Pelvic Diaphragm?

A

Support the pelvic viscera
Resists the increases in intra-abdominal pressure (for example, when you cough, sneeze, vomit)

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53
Q

What innervates the PELVIC DIAPHRAGM?

A

Nerve to Levator Ani
Inferior Rectal
Coccygeal Plexus

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54
Q

What innervates the Coccygeus Muscle?

A

Coccygeal Plexus
VENTRAL RAMI OF S4 and S5

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55
Q

What is the Pelvic Fascia Continuous with?

Remember.. Pelvic Fascia is broken into 2 categories. (Parietal and Visceral)

A

Pelvic Fascia (connective tissue) that is continuous with the transversalis fascia.

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56
Q

What is the Parietal Pelvic Fascia continuous with?
(Parietal Pelvic Fascia is membranous fascia)

A

Transversalis Fascia and ILIOPSOAS FASCIA

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57
Q

What does the Visceral Pelvic Fascia line?
(Visceral Pelvic Fascia is membranous fascia)

A

It lines/ensheathes the pelvic Viscera.
It is continuous with the parietal pelvic fascia near the pelvic floor
IT FORMS ADVENTITIAL LAYER

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58
Q

Where the parietal pelvic fascia thickens, what does it form?
(Hint: this structures runs from the pubis to the sacrum)

A

TENDINOUS ARCH OF THE PELVIC FASCIA

This is where the parietal pelvic fascia meets the visceral pelvic fascia

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59
Q

What are the most anterior parts of the tendinous arch of pelvic fascia? (HINT: 2 ligaments, one in males and the other in females)

A

PUBOPROSTATIC LIGAMENT (in males)

PUBOVESICAL LIGAMENT (in females)

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60
Q

What is the pelvic fascia found between the parietal and visceral pelvic fascia?

Remember.. the endopelvic fascia is either “fatty” or “condensed”

A

ENDOPELVIC FASCIA

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61
Q

What does the condensed part of the endopelvic fascia form?

A

HYPOGASTRIC SHEATH

This is where the neurovasculature passes through to the pelvic viscera. Also where the ureters and the ductus (vas) deferens passes through.

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62
Q

What are the 3 parts/LAMINEA of the HYPOGRASTRIC SHEATH?

A

LATERAL LIGAMENT OF THE BLADDER (anterior part)

RECTOVESICAL SEPTUM (males) or CARDINAL LIGAMENT (females) (middle part)

LATERAL RECTAL LIGAMENT

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63
Q

What artery and vein (vessels) passes through the LATERAL LIGAMENT OF THE BLADDER (anterior 1/3rd of the hypogastric sheath)

A

SUPERIOR VESICAL VESSELS (artery and vein)

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64
Q

What are the components of the “middle” part of the hypogastric sheath?

What vessels and other structure pass through the (female ligament portion)? (Hint: water under the bridge)

A

RECTOVESICAL SEPTUM (between rectum and prostate in males)

CARDINAL LIGAMENT aka transverse cervical aka Mackenrodt’s ligament (in females)
- uterine vessels (artery and vein) pass through this
- ureter will pass inferior to the vessels

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65
Q

What passes through the LATERAL RECTAL LIGAMENT (posterior 1/3rd of the hypogastric sheath)?

What is the potential space that is found here called?

A

Middle rectal vessels (artery and vein)

PELVIRECTAL SPACES –> formed by the lateral rectal ligaments

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66
Q

What suspends the vagina?
Where is the vagina suspended?

A

PARACOLPIUM

Between the tendinous arches of the pelvic fascia

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67
Q

The thickened part of the endopelvic fascia that extends from the sacrum to the uterovaginal junction (cervix) is called?

A

UTEROSACRAL LIGAMENT (ONLY IN FEMALES)

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68
Q

The cardinal ligament and the uterosacral ligament together are known as?

A

PARAMETRIUM of the endopelvic fascia

69
Q

In terms of innervation to the Pelvic Cavity, what plexuses do these nerves innervate from?

A

Sacral Plexus
Coccygeal Plexus
Pelvic Autonomic Plexus

70
Q

What supplies the majority of blood to the Lesser Pelvis (true pelvis)?

A

Branches off of the INTERNAL ILLIAC ARTERIES

71
Q

What vertebral level is the Sacral Plexus at?

A

Originates from the ventral rami of L4-S4

72
Q

What are the 5 branches that come off of the Sacral Plexus? (Pneumonic : SPILS)

Through what structure do most of these branches pass through?

A

LUMBOSACRAL TRUNK (L4,L5) –> This is not a nerve that innervates a muscle.
SCIATIC NERVE (L4-S3)
PUDENDAL NERVE (S2-S4)
SUPERIOR GLUTEAL NERVE (L4-S1)
INFERIOR GLUTEAL NERVE (L5-S2)

These nerves pass through the greater sciatic foramen when leaving the pelvis.

73
Q

What vertebral level is the coccygeal plexus at?

A

ventral rami branches of S4 - Co1 (coccygeal 1)

74
Q

What do sympathetics do in terms of the Pelvic Area ?

A

Produce vasomotion
Inhibit Peristaltic Contraction of the rectum
Stimulate contraction of the genital organs during orgasm (leads to ejaculation)

75
Q

What do parasympathetics do in terms of the Pelvic Area?

A

Stimulate contraction of the rectum (deification – shitting), bladder (urination)
Supply erectile bodies of the external genitilia (leads to an erection)

76
Q

Where is the SUPERIOR HYPOGASTRIC PLEXUS found at?

A

just INFERIOR to the bifurcation of the AORTA (right under L4)

77
Q

What does the SUPERIOR HYPOGASTRIC PLEXUS split into?

A

Bifurcates into the LEFT and RIGHT HYPOGASTRIC NERVES

78
Q

What 2 plexuses does the LEFT and RIGHT Hypogastric nerves connect?

A

Connects the SUPERIOR AND INFERIOR HYPPOGASTRIC PLEXUSES

79
Q

What are the 3 smaller visceral nerve plexuses that come off of the INFERIOR HYPOGASTRIC PLEXUSES? (3)

A

VESICAL PLEXUS
RECTAL PLEXUS

PROSTATIC PLEXUS (males)
UTEROVAGINAL PLEXUS (females)

80
Q

Where is the IMAGINARY PELVIC PAIN LINE?

A

It would be found at the INFERIOR LIMIT OF THE PERITONEUM

81
Q

VA FIBERS transmit pain sensations from the viscera either superior or inferior to the PELVIC PAIN LINE.

What do Sympathetics travel?
What do PARASYMPATHETICS travel with?

A

Sympathetics travel the pain sensations from the viscera superior to the Pelvic Pain Line

Parasympathetics travel with the pain sensations from the viscera inferior to the Pelvic Pain Line

82
Q

What plexus contains “ganglion-like cells?

A

INFERIOR HYPOGASTRIC PLEXUSES

83
Q

What nerves would synapse at the “ganglion-like cells” of the inferior hypogastric plexus?
Do they actually synapse? (they are mostly sym/post, but the ones that would synapse would have sym/pre fibers).

A

Sacral Splanchnics (S1-S4)

They normally do not synapse at “ganglion-like” cells.

84
Q

How do the para/pre fibers get to the hindgut?

A

Pelvic Splanchnic Nerves (S2 - S4)

85
Q

What do the Pelvic Splanchnic lead into? (Pelvic Splanchnics coming off of S2-S4)

A

INFERIOR HYPOGASTRIC PLEXUS

86
Q

What are the main arteries that supply blood to the Lesser Pelvis (true pelvis)? (Hint: 3 in males, 4 in females) (SIM - O)

A

INTERNAL ILIAC ARTERY (supplies blood to most of the pelvic region)
MEDIAN SACRAL ARTERY
SUPERIOR RECTAL ARTERY (supplies blood to most of the rectum)

OVARIAN ARTERIES (females) (supplies most of the blood to the ovaries)

87
Q

Which artery delivers most of the blood to the pelvic region?

A

INTERNAL ILIAC ARTERY (branch off of the common iliac artery)

Anterior internal iliac artery gives of most of the distal branches

88
Q

What artery branches off of the aorta when it bifurcates? (Hint: it gives off the 5th lumbar arteries)

A

MEDIAN SACRAL ARTERY

89
Q

What artery branches off of the inferior mesenteric artery and SUPPLIES MOST OF THE RECTUM?

A

SUPERIOR RECTAL ARTERY

90
Q

Which artery supplies the ovaries? (It comes off of the abdominal aorta)

A

OVARIAN ARTERY

91
Q

What are the 2 divisions of the INTERNAL ILLIAC ARTERY?

A

ANTERIOR
POSTERIOR

92
Q

What comes of the Anterior Division of the internal iliac artery in males and females?

A

MALES
- Umbilical artery
- Superior Vesical artery
- Obliterated Umbilical Artery
Obturator Artery
Inferior Vesical Artery
Middle Rectal Artery
Internal Pudendal Artery
Inferior Gluteal Artery

FEMALES
everything same EXCEPT –> there is a UTERINE ARTERY which gives off a VAGINAL ARTERY which gives off the INFERIOR VESICAL ARTERY

93
Q

What comes of the POSTERIOR Division of the internal iliac artery in males and females? (males and females are the same)

A

ILIOLUMBAR ARTERY
LATERAL SACRAL ARTERY
SUPERIOR GLUTEAL ARTERY

94
Q

What are the 9 Pelvic lymph nodes ?
(pneumonic - PEDS are an L, I luv CSI)

Where do they eventually drain to before going to the thoracic duct?

A

LUMBAR LYMPH NODE
INFERIOR MESENTERIC LYMPH NODE
COMMON ILIAC LYMPH NODE
INTERNAL ILIAC LYMPH NODE
SACRAL LYMPH NODE
PARARECTAL LYMPH NODE
EXTERNAL ILIAC LYMPH NODE
SUPERFICIAL INGUINAL LYMPH NODE
DEEP INGUINAL LYMPH NODE

Lymph eventually makes its way to cisterna chyli and then to the thoracic duct

95
Q

What is the function of the ureters?

Rememeber.. the ureters pass inferioly to the uterine artery and ductus (vas defernse)

A

They carry urine from the kidney to the urinary bladder.

They are retroperitoneal

96
Q

What arteries supply blood to the ureters? (Pneumonic: U-SIG-RIC)

A

INFERIOR VESICAL ARTERY
UTERINE ARTERIES
RENAL ARTERIES
GONADAL ARTERIES
SUPERIOR VESICAL ARTERIES
COMMON ILIAC ARTERY
INTERNAL ILLIAC ARTERY

97
Q

Where does the lymph from the ureters drain too? (Pneumonic : LICE)

A

LUMBAR LYMPH NODE
COMMON ILLIAC LYMPH NODE
EXTERNAL and INTERNAL ILIAC LYMPH NODE

98
Q

What nerves innervate the ureter? (Pneumonic : HIS- AR)

A

AUTONOMIC FIBERS from..

RENAL PLEXUS
AORTIC PLEXUS
SUPERIOR/INFERIOR HYPOGASTRIC PLEXUS

99
Q

Kidney Stones found anywhere along the ureter is called?

What can we do to fix it?

A

URETERIC CALCULI (stones) –> lead to obstruction of urinary flow
- usually occurs where the ureter is constricted (3 points of constriction)

Calculi can be removed via open surgery, endoscopically, and using LITHOTRIPSY.

LITHOTRIPSY –> using shock waves to break up the stones into smaller fragments

100
Q

What separates the urinary bladder from the pubic symphysis?

A

RETROPUBIC SPACE

101
Q

What are the 4 parts of the urinary bladder?

Remember.. the bladder fill from the bottom up.

A

APEX
BODY
FUNDUS
NECK (urethra connects to the neck of the urinary bladder)

102
Q

What muscles are in the walls of the urinary bladder?

What innervates it?

A

DETRUSOR MUSCLE. (Near the neck of the bladder, the detrusor muscle fibers form the INTERNAL URETHRAL SPHINCTER.

Parasympathetics innervate this muscle causing contraction of the bladder

103
Q

Near the neck of the bladder (part that the urethra goes into) what is the sphincter called?

What innervates it? (specifically in males, why does is this important)

A

INTERNAL URETHRAL SPHINCTER (formed by the detrusor muscle fibers)

SYMPATHETICS innervate this sphincter and cause it to contract so that sperm doesn’t travel up into the bladder during ejaculation (PREVENT REFLUX OF SEMEN).

sympathetics also stimulate ejaculation

104
Q

Looking inside the urinary bladder, what do we see?

What structures are at the angles of this space?

A

TRIGONE OF THE BLADDER

URETERIC ORIFICES (2 of them) at each upper angle
INTERNAL URETHRAL ORIFICE at the bottom
- there is a slight elevation of the trigone in this orifice called the BLADDER UVULA

105
Q

What arteries supply blood to the urinary bladder?

A

SUPERIOR VESICAL ARTERY
INFERIOR VESICLE ARTERY

in females.. also.. VAGINAL ARTERY

106
Q

Where does lymph from the urinary bladder go?

A

EXTERNAL and INTERNAL ILIAC LYMPH NODES

107
Q

Where does the female urethra lie in respect to the vagina?

A

It lies anterior to the vagina

108
Q

Between the female urethra and the vagina, there are some glands. What are these glands called?

A

PARAURETHRAL GLANDS (Skene’s glands) –> Some nerves here (G SPOT)

109
Q

What arteries supply blood to the female urethra? (Pneumonic: V-IP)

A

INTERNAL PUDENDAL ARTERY
VAGINAL ARTERY

110
Q

Where does lymph from the female urethra go to? (Pneumonic: DISS)

A

SACRAL LYMPH NODE
INTERNAL ILIAC LYMPH NODE
SUPERFICIAL INGUINAL LYMPH NODE
DEEP INGUINAL LYMPH NODE

111
Q

What nerves innervate the FEMALE URETHRA? (Pneumonic : VNP - P)

A

VESICLE NERVE PLEXUS
PUDENDAL NERVE

112
Q

What are the 4 parts of the MALE URETHRA?

Remember.. male urethra has urine and semen running through it

A

INTRAMURAL (preprostatic)
PROSTATIC
INTERMEDIATE (membranous)
SPONGY (penile) –> longest part of urethra

113
Q

What arteries supply blood to the MALE URETHRA? (Pneumonic: MID)

A

INFERIOR VESICAL ARTERY
MIDDLE RECTAL ARTERY
DORSAL ARTERY OF THE PENIS

114
Q

Where does lymph from the male urethra drain to? (Pneumonic: EID)

A

INTERNAL and EXTERNAL ILLIAC LYMPH NODES
DEEP INGUINAL LYMPH NODE

115
Q

What nerves innervate the male urethra? (Pneumonic: PNP - D)

A

Autonomics from the PROSTATIC NERVE PLEXUS

DORSAL NERVE OF THE PENIS

116
Q

In order to see inside the bladder, we can go through the urethra and into the bladder. What instrument do we use?

A

CYTOSCOPE

117
Q

Vagina is a musculomembranous tube that goes from the cervix (of uterus) down to the vestibule of the vagina.
REMEMBER.. Vagina has vaginal rugae on the inside

What is the recess found on the vagina that extend around the cervix?

A

VAGINAL FORNIX. (Anterior fornix, 2 lateral fornices, POSTERIOR FORNIX)

118
Q

What is special about the POSTERIOR FORNIX? (Hint: Culdocentesis –> a procedure that checks for abnormal fluid just behind the vagina.)

A

When doing a CULDOCENTESIS, surgeons make an incision in the posterior fornix and into the peritoneal cavity to drain a pelvic abscess in the RECTOUTERINE POUCH OF DOUGLAS.

119
Q

There are 4 muscles that compress the vagina and act like sphincters. What are they? (Pneumonic: PUBE)

A

PUBOVAGINALIS muscles
URETHROVAGINAL SPHINCTER
EXTERNAL URETHRAL SPHINCTER
BULBOSPONGIOSUS

120
Q

What arteries supply blood to the Vagina? (

A

UTERINE ARTERY (first 1/5th)
VAGINAL ARTERY (middle 3/5ths)
INTERNAL PUDENDAL ARTERY (last 1/5th)

121
Q

Where does the lymph from the vagina drain too? (Pneumonic: ICE - SIS)

A

INTERNAL and EXTERNAL ILIAC LYMPH NODES
COMMON ILIAC LYMPH NODES

SUPERFICIAL INGUINAL LYMPH NODE
SACRAL LYMPH NODE

122
Q

What nerves innervate the vagina? (Pneumonic: UV-P)

A

PUDENDAL NERVE
UTEROVAGINAL PLEXUS (autonomics)

Sympathetics stimulate smooth muscle contraction and vasoconstriction of blood vessels
Parasympathetics are involved transudation.

123
Q

What are the 3 parts of the UTERUS?

A

FUNDUS
BODY
CERVIX (has a supravaginal and vaginal portion)

124
Q

What are the 3 walls of the uterus (3 layers) ?

A

PERIMETRIUM (outer)
MYOMETRIUM (middle)
ENDOMETRIUM (inner)

125
Q

What arteries supply blood to the uterus?

A

UTERINE ARTERIES

126
Q

Where does the lymph from the uterus drain into? (Pneumonic: ISLES)

A

LUMBAR LYMPH NODE
SUPERFICIAL INGUINAL LYMPH NODE
EXTERNAL and INTERNAL ILIAC LYMPH NODE
SACRAL LYMPH NODE

127
Q

What nerve innervates the uterus?

A

UTEROVAGINAL PLEXUS

128
Q

What is a hysterectomy?

Where is it performed?

A

Removal the uterus

It can be performed through the lower abdominal wall or through the vagina.

129
Q

What is inspected when you perform a pap smear?

A

The cervix (specifically cellular material from the vaginal surface of the cervix and the supravaginal cervical mucosa)

Vaginal speculum holds the vagina open to enable inspection.
A spatula is then placed on the external os of uterus and rotated to collect cellular material from the vaginal surface of the cervix.
Then you use a cyto-brush and go inside the cervical canal to collect cellular material from the SUPRAVAGINAL CERVICAL MUCOSA.

130
Q

What types of regional anesthetics can be given for child birth?

A

LUMBAR EPIDURAL and LOW SPINAL BLOCK –> anesthetize somatic and VE fibers below the waist (include intra and subperitoneal, and somatic areas. –> therefore the uterus, entire birth canal, perineum, and lower limbs will not feel anything.

CAUDAL UPIDURAL BLOCK –> CAN ONLY BE DONE FOR PARTICIPATORY CHILD BIRTH (in advance, and not for precipitous child birth)
- Anesthetize subperitoneal and somatic areas from pelvic pain line and inferiorly.
- birth canal is anesthetized but uterine contractions are still felt (lower limbs are not anesthetized)

PUDENDAL NERVE BLOCK –> only anesthetizes the areas innervated by the pudendal nerve (perineum)

131
Q

What are the 3 main parts of the BROAD LIGAMENT? (broad ligament is double layer of peritoneum)

A

MESOMETRIUM (mesentery of uterus)
MESOSALPINX (mesentery of uterine tube)
MESOVARIUM (suspends the ovary)

132
Q

The superolateral extension of the Broad Ligament is called? (Hint: INFUNDIBULOPELVIC LIGAMENT)

A

SUSPENSORY LIGAMENT OF THE OVARY

133
Q

What ligament attaches the ovary to the uterus?

It is a remnant of what?

A

OVARIAN LIGAMENT

Remnant of GUBERNACULUM

134
Q

What attaches the fundus of the uterus to labia majora?

It is a remnant of what?

A

ROUND LIGAMENT

Remnant of GUBERNACULUM

135
Q

What two positions does the adult uterus usually rest in?

A

Antiverted position (bend in the cervix of the uterus)
Antiflexed position (bend in the body of the uterus)

136
Q

If the uterus is not sitting on top of the bladder, what position is it in?

When the uterus is sitting on top of the bladder, but has slid a bit backwards, what position is it in?

A

RETROVERTED POSITION (1st, 2nd, 3rd degree)

RETROCESSION position

137
Q

What supplies blood to the uterine (fallopian tubes)?

A

OVARIAN ARTERY
UTERINE ARTERY

138
Q

Where does the lymph from the Uterine (fallopian) tubes drain into?

A

LUMBAR LYMPH NODE

139
Q

What innervates the uterine (fallopian) tubes?

A

OVARIAN PERIARTERIAL PLEXUS (autonomics)
UTEROVAGINAL PLEXUS

sympathetics constrict and parasympathetics vasodilate

140
Q

Abdominal tubal ligation is usually performed laproscopically just at the pubic hairline.

What are we doing when we do that procedure? (Hint: this is a surgical method of birth control –> prevents pregnancy)

A

LIGATION OF UTERINE TUBES

141
Q

When a blastocyst fails to reach the uterus and implants into the mucosa of the uterine tube (fallopian tubes, usually at the ampulla), what is this called?

A

ECTOPIC TUBAL PREGNANCY

80% - happens at ampulla of uterine tube
12% tubal implantation
1.4% - implants in the rectouterine pouch of Douglas

142
Q

What 2 ligaments are associated with the ovaries?

A

OVARIAN LIGAMENT
SUSPENSORY LIGAMENT

143
Q

What supplies blood to the ovaries?

Where does the Left Ovarian Vein drain too?

A

OVARIAN ARTERY

LEFT OVARIAN VEIN –> LEFT RENAL VEIN –> IVC
RIGHT OVARIAN VEIN –> IVC

144
Q

Where does the lymph from the ovaries go to?

A

LUMBAR LYMPH NODE

145
Q

What innervates the ovaries?

A

OVARIAN PERIARTERIAL PLEXUS (autonomics)
UTEROVAGINAL PLEXUS

sympathetics constrict
parasympathetics dilate

146
Q

What is the ductus (vas) deferens a continous of?

When the ductus deferens swells up, what does it form?

A

DUCTUS DEFERNS is a continuation of the epididymis

AMPULLA OF the DUCTUS DEFERENS

147
Q

What arteries supply blood to the ductus (vas) deferens?

A

ARTERY OF THE DUCTUS DEFERENS
TESTICULAR ARTERY

148
Q

Where does the lymph from the ductus (vas) deferens drain to?

A

EXTERNAL and INTERNAL ILIAC LYMPH NODES

149
Q

What innervates the Ductus (vas) deferens?

A

DUCTUS DEFERENS PLEXUS

Sympathetics stimulate rapid peristaltic contraction (propel sperm from epididymis into pelvis)

150
Q

Ligating the ductus (vas) deferens is called what?

A

DEFERENTECTOMY (VASECTOMY) –> now the fluid that comes out has no mo sperm

151
Q

Do the seminal vesicles store sperm?

A

NOOOO

They produce an alkaline fluid that mixes with the sperm to help it pass into the ejaculatory ducts and urethra

152
Q

What supplies blood to the Seminal Vesicles?

A

INFERIOR VESICAL ARTERY
MIDDLE RECTAL ARTERY

153
Q

Where does lymph from the seminal vesicle drain too?

A

EXTERNAL and INTERNAL ILLIAC LYMPH NODES

154
Q

What innervates the seminal vesicle?

A

PROSTATIC NERVE PLEXUS (sympathetics)

Sympathetics stimulate contraction and secretion of the glands

155
Q

When the ductus deferens and the seminal vesicles unite, what do they form?

A

EJACULATORY DUCT

156
Q

What supplies blood to the ejaculatory duct?

A

ARTERY OF THE DUCTUS DEFERNS

157
Q

Where does lymph from the ejaculatory duct drain to?

A

EXTERNAL ILIAC LYMPH NODE

158
Q

The prostate gland surrounds the prostatic urethra.

The prostatic fluid passes through what two structures? (also this fluid contains 20% of the volume of semen)

A

Prostatic fluid passes through 20-30 PROSTATIC DUCTS that mainly open into the prostatic sinuses. (These prostatic sinuses lie on either side of the seminal colliculus)

159
Q

What are the 4 zones of the PROSTATE?

A

PERIURETHRAL/TRANSITION ZONE (5% of total gland) –> associated w/ benign prostatic hypertrophy as you age
CENTRAL ZONE (20-25% of total gland) –> more aggressive prostate cancers originate from this zone (less than 5% of prostate cancers)
PERIPHERAL ZONE (70% of total gland) –> 70-80% of prostate cancers originate from here)
ANTERIOR/FIBROMUSCULAR ZONE (5% of total gland) –> no glandular tissue. (only fibrous and muscular tissue)

160
Q

What supplies blood to the prostate?

A

INFERIOR VESICAL ARTERY
MIDDLE RECTAL ARTERY
INTERNAL PUDENDAL ARTERY

161
Q

Where does the lymph of the prostate go to?

A

INTERNAL ILLIAC LYMPH NODE
SACRAL LYMPH NODE

162
Q

What nerve innervates the prostate gland?

A

PROSTATIC NERVE PLEXUS (sympathetics)

Sympathetics stimulate contraction and secretion of the prostate gland

163
Q

What is Brachytherapy?

They include it here because the example shows prostate brachytherapy.

A

Brachytherapy (internal radiation) involves placing radioactive materials inside your body to treat cancer.

You can deliver higher doses of radiation to more specific areas of the body compared to traditional radiation.

164
Q

What is a benign prostatic hypertrophy?

What zone of the prostate does the benign prostatic hypertrophy associate with?

A

Enlarged prostate the projects onto the bladder and impedes urination by obstructing the internal urethral orifice and distorting the prostatic urethra.

It is commonly associated with the periurethral/transition zone.

165
Q

What does the bulbourethral (Cowper’s) glands do?

A

They secrete a mucus-like substance into the urethra during sexual arousal in the male.

166
Q

What artery supplies blood to the bulbourethral gland?

A

artery of the bulb of the penis

167
Q

Where does the lymph of the bulbourethral gland go to?

A

EXTERNAL and INTERNAL ILIAC LYMPH NODE

168
Q

What innervates the BULBOURETHRAL GLANDS?

A

PROSTATIC NERVE PLEXUS (sympathetics)

sympathetics stimulate constriction and secretion

GI ANAT (7 decks)

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