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Anatomy > Lecture 24: Male Pelvic Cavity > Flashcards

Lecture 24: Male Pelvic Cavity Flashcards

1
Q
A
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2
Q

The pelvic cavity is formed by the ___ bones, the __, and the ___

A

hip bones; sacrum; coccyx

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3
Q

___: supports and protects the pelvic viscera, transmits upper body weight to lower extremities, provides a stable base for lower limb function, and forms birth canal

A

Bony pelvis

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4
Q

Each hip bone is formed by three bones that are fused at puberty:
1) ??
2) ??
3) ??

A

1) Ilium
2) Ischium
3) Pubis

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5
Q

What are the two joints of the pelvis?

A

1) Pubic Symphysis
2) Sacroiliac Joint

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6
Q

Which joint of the pelvis is a relatively immobile fibrocartilaginous joint?

Which pelvic joint is a synovial joint form between right and left ilia and sacrum?

A

Pubic Symphysis

SI Joint

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7
Q

True or False: Minimal gliding rotational movements occur at the SI joint

A

True

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8
Q

What are the two ligaments of the pelvis?

A

1) Sacrotuberous Ligament
2) Sacrospinous Ligament

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9
Q

Which pelvic ligament attaches to the ischial tuberosity and sacrum?

Which pelvic ligament attaches to the ischial spine and the sacrum?

A

Sacrotuberous Ligament: attaches to ischial tuberosity + sacrum

Sacrospinous Ligament: attaches to ischial spine and sacrum (also deep to sacrotuberous ligament)

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10
Q

The sacrotuberous and sacrospinous ligaments transform the greater and lesser sciatic notches into the ____ and ____ sciatic foramina

A

greater; less

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11
Q

The superior pelvic aperture is also known as the ____

The inferior pelvic aperture is also known as the ___

A

pelvic inlet

pelvic outlet/birth canal

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12
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15
Q
A
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16
Q

Pelvis major is known as the ____ while the pelvis minor is known as the ___

A

pelvis major = false pelvis
pelvis minor = true pelvis

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17
Q

___ delineates the pelvic inlet/superior pelvic aperture

A

Pelvic brim

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18
Q

True or False: Pelvis minor is inferior and contains PELVIC viscera, while Pelvic major is superior and contains ABDOMINAL viscera

A

True

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19
Q

The inferior pelvic aperture is delineated by the ____, ____, ____, and ____

A

ischial tuberosities, ischial spines, ischiopublic rami, and coccyx

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20
Q

True or False: Perineum is a diamond shaped area

A

True

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21
Q

_____: the investing fascias of the pelvic m. that line the pelvic cavity and are continuous with abdominal muscular fascia

A

Parietal Pelvic Fascia

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22
Q

____: peritoneum that invests abdominal organs and extends into the true pelvis, as well as partially invests pelvic organs, forming spaces and folds between them

A

Pelvic Peritoneum

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23
Q

True or False: Both males and females have spaces on either side of the rectum (pararectal fossa) an the urinary bladder (paravesical fossa)

A

True

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24
Q

Which sex has a pouch located between the rectum and seminal vesicles/urinary bladder (rectovesical) and a fold between the sacrum and prostate/bladder (sacrogenital)?

A

Male only

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25
Q

Fractures of the hip bone are considered ___ fractures

A

pelvic fractures

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26
Q

___ and ____ are muscles of the lateral pelvic wall

A

Piriformis m and Obturator internus m.

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27
Q

Which pelvic muscle of the lateral wall is the site of the sacral pelxus?

A

Piriformis muscle

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28
Q

True or False: Both the Obtruatory Internus m. and the Piriformis m. insert onto the femur

A

True

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29
Q

The obtruator internus m. is the tendon the exits the pelvis via the ___

The piriformis m. is the tendon that exits the pelvis via the ______

A

lesser sciatic foramen
greater sciatic foramen

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30
Q

The pelvic floor is formed by the ____

A

pelvic diaphragm (bowl shaped group of skeletal muscles that partially closes off the pelvic outlet and supports the abdominopelvic viscera)

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31
Q

True or False: The pelvic diaphragm partially closes off the pelvic out when intra-abdominal pressure is raised (as in coughing or straining)

A

True

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32
Q

___: pulls coccyx anteriorly and supports pelvic viscera; wags tails in other mammals

A

Coccygeus

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33
Q

____: elevates pelvic floor to resist/raise intra-abdominal pressure (Important for forced expiration, coughing, or vomiting)

A

Levator Ani

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34
Q

Where does the piriformis nerve exit the pelvis?

A

Greater Sciatic Foramen

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35
Q

____ transmits obturator n/a/v and connects the abdominopelvic region with medial part of thigh

A

Obturator Canal

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36
Q

True or False: The lesser sciatic foramen connects the gluteal region with the perineum

A

True

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37
Q

The tendon of obtruator internus m exits the pelvis via the _____foramen

A

Lesser Sciatic Foramen

38
Q

____ Foramen connects the pelvic cavity with the gluteal region

A

Greater Sciatic Foramen

39
Q

The superior gluteal n/a/v pass superior to the ___ m, inferior gluteal n/a/v

A

piriformis

40
Q

Which nerve passes inferior to the piriformis m?

A

Pudenal n.

42
Q

The ___ Plexus supplies sensory and motor innervation to the perineum, gluteal region, and lower extremities.

Many of these nerves exit the pelvis via: greater sciatic foramen

A

The Sacral Plexus

43
Q

__ and __ form the lumbosacral trunk

44
Q

What four branches come off the sacral plexus?

A

1) Sciatic n
2) Pudenal n
3) Superior Gluteal n.
4) Inferior Gluteal n

45
Q

Which branch of the sacral plexus provides motor innervation to BOTH the gluteus minimus and medius muscles?
A. Sciatic Nerve
B. Superior Gluteal Nerve
C. Inferior Gluteal Nerve
D. Pudenal Nerve

A

B. Superior Gluteal Nerve

46
Q

Which branch of the sacral plexus provides motor innervation to the gluetus maximus ONLY?
A. Sciatic Nerve
B. Superior Gluteal Nerve
C. Inferior Gluteal Nerve
D. Pudenal Nerve

A

C. Inferior Gluteal Nerve

47
Q

____ nerve provides motor and sensory function to lower extremity; has two components (tibial and common fibular)
A. Sciatic Nerve
B. Superior Gluteal Nerve
C. Inferior Gluteal Nerve
D. Pudenal Nerve

A

A. Sciatic Nerve

48
Q

Which artery/vein delivers the majority of blood to the pelvis?
A. Internal Iliac a/v
B. Common Iliac a/v
C. External Iliac a/v

A

A. Internal Iliac a/v

49
Q

What are the three posterior division branches of the internal iliac a/v?

A

1) Iliolumbar a
2) Lateral sacral a
3) Superior gluteal a

50
Q

Which posterior division branch of the internal iliac a/v passes posteriorly between the lumbosacral trunk and S1 ventral ramus, superior to piriformis muscle?
A. Iliolumbar a.
B. Lateral sacral a.
C. Superior gluteal a.

A

C. Superior gluteal a.

51
Q

What are the five anterior division branches of the Internal Iliac a/v?

A

1) Umbilical a.
2) Inferior vesical a.
3) Middle rectal a
4) Obtruator a
5) Internal Pudendal a
6) Inferior Gluteal a
7) Vaginal a

52
Q

Which anterior division of the Internal Iliac a/v supplies the bladder and ureter in males? In females?

A

Males: Inferior vesical a
Females: Uterine a.

53
Q

True or False: The obturator a. supplies the medial compartment of the thigh

54
Q

Which anterior division of the internal iliac a/v travels with the pudendal n to supply the perineum?

A

Internal Pudendal a.

60
Q

Are the following Internal or External Genital Organs?
- Testis
- Epididymis
- Ductus Deferens
- Prostate Gland
- Seminal Vesicles
- Ejaculatory Duct

61
Q

The testis is suspended in the scrotum by the ____

A

spermatic cords

62
Q

___ is the source of male hormones (testosterone, mostly) and site of spermatogenesis

63
Q

Where are sperm made?

A

Seminiferous Tubules

64
Q

True or False: The testis is supplied by the testicular a/v

65
Q

The right testicular v. drains into the ____

The left testicular v. drains into the ____

A

Right testicular v. = IVC
Left testicular v. = Left Renal Vein

66
Q

Which part of the epididymis is continuous with the ductus deferens?

67
Q

___ stores sperm until its mature

A

Epididymis

68
Q

___: muscular tube that transport sperm from testis to urethra during ejaculation

A

Ductus Deferns

69
Q

What are the main structures located within the spermatic cord?

A

1) Ductus deferens
2) Testicular a.
3) Pampiniform plexus of veins

70
Q

The ductus deferens narrows and joints the duct of the ___ to form the ___ duct

A

1) seminal gland
2) ejaculatory duct

71
Q

During a ___, part of the ductus deferens is excised through an incision in the superior part of the scrotum

77
Q

___: contribute an viscous fluid, rich in fructose (to nourish sperm) and prostaglandin fluid (to help stimulate uterine contractions)

A

Seminal vesicles

78
Q

The short duct of the seminal vesicle joints the ampulla of the ductus deferens to form the _____duct

A

ejaculatory duct

79
Q

____: slender tube that arises by the union of the duct of a seminal gland with the ductus deferens

A

Ejaculatory ducts

80
Q

True or False: The ductus deferens courses through the prostate gland to open into the prostatic urethra

A

False - the EJACULATORY DUCTS course through tissue of the prostate gland to open into the prostatic urethra

81
Q

What is the larges accessory organ of the male reproductive tract?

A

Prostate gland

82
Q

The prostate gland contacts with bladder and surrounds the ____

A

prostatic urethra

83
Q

The prostate gland has autonomic innervation via the _____plexus

A

prostatic plexus

84
Q

The prostate gland and seminal vesicles are supplied by branches of the _____a

A

internal iliac a.

85
Q

Venous blood drains to the prostatic and then to the _____ plexus

A

internal vertebral venous plexus

86
Q

True or False: The prostate gland contributes a thin, milky fluid rich in substances that enhance sperm motility and enzymes that clot and liquify semen

87
Q

The body of the penis is formed by which three cylindrical erectile bodies?
What are they bound together by?

A

1) Corpora Cavernosa
2) Corpus Spongiosum
3) Prepuce (foreskin)

Bound together by Buck’s fascia (dense CT sheath)

Anatomy (28 decks)

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