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Anatomy > Sagittal Plexus/Pelvis > Flashcards

Sagittal Plexus/Pelvis Flashcards

1
Q

3 Bones of Coxal Bones

A

Ilium (sup)
Ischium (inf)
Pubis (ant)

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2
Q

Acetabulum

A

Concave site where 3 coxal bones meet and head of femur sits

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3
Q

4 Parts of Bony Pelvis

A

L and R Coxal Bones, Sacrum, Coccyx

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4
Q

Sacrotuberous Ligament

A

Travels from sacrum to ischial tuberosity

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5
Q

Ischial Tuberosity

A

Big rounded edge at inferior/anterior surface of ischium

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6
Q

Sacrospinous Ligament

A

Travels from sacrum to ischial spine

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7
Q

Ischial Spine

A

Bump separating greater and lesser sciatic notch

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8
Q

Path of Perineal-Directed Structures

A

Come out of sacrum through greater sciatic foramen, but then loop around and go through lesser sciatic foramen

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9
Q

Obturator foramen

A

Opening between ischium and pubis, mainly filled w/ ligament so actual foramen is quite small

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10
Q

Arcuate Line of Ilium

A

Smooth rounded border on internal surface of ilium

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11
Q

Posterior Superior Iliac Spine

A

Sticks out above sacrum

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12
Q

Posterior Inferior Iliac Spine

A

Sticks down into greater sciatic notch

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13
Q

Anterior Vertical Plane of Pelvis

A

Anterior superior iliac spines and pubic tubercles

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14
Q

Transverse Plane of Pelvis

A

Superior border of pubic symphysis and ischial spines

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15
Q

6 Sex Differences Between Males/Females

A
  1. Flare of the ilia - F: out laterally, M: upright
  2. Shape of pelvic inlet (sup. aperture) - F: rounder, M: oval or heart-shaped
  3. Pelvic outlet (inf. aperture) - F: coccyx bent back to make it larger, M: coccyx bent inwards so its smaller
  4. Pelvic arch - F: wider and broader, M: V-shaped
  5. Obturator foramen - F; oval and narrower, M: rounder
  6. Shape of sacrum
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16
Q

Floor of pelvis

A

Pelvic diaphragm

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17
Q

Tendinous arch

A

Kind of wide U that makes up lat. and ant. borders of pelvic diaphragm

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18
Q

Obturator internus

A

Makes up lateral wall of pelvic bowl, then bends 90 deg around ischial spine and heads down to femur

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19
Q

Piriformis muscle

A

Runs along sup. post. wall of pelvic bowl

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20
Q

Urogenital Hiatus

A

Hole in ant/inf pelvic musculature for urethra to pass through

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21
Q

Anococcygeal Raphe

A

Line where 2 halves of pelvic diapharagm join together

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22
Q

2 Parts of Pelvic Diaphragm

A

Levator ani m. and coccygeus m.

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23
Q

3 Muscles of Levator Ani (Med-Lat)

A

Puborectalis, pubococcygeus, and iliococcygeus

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24
Q

Coccygeus Muscle

A

Runs b/w levator ani muscles and piriformis

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25
Q

Rectal Peritoneal Relationships (2)

A

Retroperitoneal - Upper 2/3

Infraperitoneal - Lower 1/3

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26
Q

Folds of Houston

A

Transverse rectal folds

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27
Q

Skeletal Muscle of Anus

A

Levator ani

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28
Q

Pectinate Line

A

Where anal columns meet anal sinuses

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29
Q

White Line of Hilton

A

Line in anus where it changes from rectal epithelium to skin epithelium

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30
Q

Anal Columns Function

A

Allow for tighter closure of anus

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31
Q

3 Blood Supplies to Rectum

A

Superior rectal a. off inf. mesenteric a.
Middle rectal a. off internal iliac a.
Inferior rectal a. off internal pudendal a.

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32
Q

Anastomosis to bypass common iliac a.

A

Superior rectal and middle rectal a.s, combining inf. mesenteric a. and internal iliac a.

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33
Q

Innervation of rectum

A

through inferior hypogastric and rectal plexuses: Postgang symps coming from lumbars, parasymps coming from sacral

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34
Q

4 External Features of Bladder

A

Base (fundus) - superior
Apex - by neck
Body
Neck - where urethra coming out

35
Q

Vesical Trigone

A

Triangle in bladder made by the two ureteric ostia and internal urethral orifice

36
Q

Blood Supply of Bladder (2)

A

Superior and inferior vesical arteries off internal iliac a.

37
Q

Innervation of Bladder

A

Inferior hypogastric plexus, both symp and parasymp

38
Q

Path of Ductus Deferens (2)

A

Anterolateral from testes, curve around posteromedial behind bladder to join w/ seminal vesicles on prostate
Retroperitoneal

39
Q

Ampulla of Ductus Deferense

A

Enlarged part of ductus deferens that meets seminal vesicles

40
Q

Blood Supply of Ductus Deferens

A

Deferential artery from internal iliac

41
Q

Innervation of ductus deferens

A

Sympathetic from sup. hypogastric plexus

42
Q

Seminal Vesicles

A

Blind-ended glands on post/inf side of bladder that run into prostate and produce seminal fluid

43
Q

Seminal Vesicles/Prostate Blood Supply

A

Inferior vesical a. off internal iliac

44
Q

Seminal Vesicles/Prostate Innervation

A

Symp from sup. hypogastric plexus

45
Q

Uvula

A

Raised part in urethra running from vesical trigone

46
Q

Prostatic Crest

A

Crest on uvula as it enters prostate

47
Q

Colliculus Seminalis

A

Hill in urethra in middle of prostate containing prostatic utricle and ejaculatory ducts

48
Q

Ejaculatory Ducts

A

Form from combination of ductus deferens and seminal vesicles, pass through prostate, and come out laterally onto colliculus seminalis

49
Q

Prostatic Utricle (2)

A

Medial hole on colliculus seminalis, remnant of uterus

50
Q

3 Parts of Male Urethra (proximal-distal)

A

Prostatic urethra, membranous urethra, spongy (penile) urethra

51
Q

Ovarian Ligament

A

Runs from uterus to ovary

52
Q

Mesovarium

A

Draping of peritoneum around ovarian ligament

53
Q

Suspensory Ligament of Ovary

A

Comes in laterally and carries ovarian a. and v.

54
Q

Fimbriae

A

Fingers that hang out over ovary from uterine tubes and pick up eggs

55
Q

Mesosalpinx

A

Draping of peritoneum over uterine tube

56
Q

4 Sections of Uterine Tube (ovary-uterus)

A

Infundibilum, ampulla, isthmus, intramural

57
Q

3 Parts of Uterus

A

Fundus, body, cervix

58
Q

3 Parts of Cervix

A

Internal os, cervical canal, external os

59
Q

Cervix Function

A

Closes down w/ mucus plug when not ovulating to prevent infection and such

60
Q

2 Bends of Uterus

A

Anteversion - where cervix meets vagina, 90 deg or less

Anteflexion - Where cervix meets body of uterus, 170 deg or less

61
Q

2 Abnormal Positions for Uterus

A

Retroversion and retroflexion

62
Q

3 Parts of Broad Ligament

A

Mesometrium, mesosalpinx, mesovarium

63
Q

Round Ligament

A

Remnant of ductus deferens, runs from uterine horns through inguinal rings and down into labia majora

64
Q

Cardinal Ligament

A

More lateral ligaments that support uterus around cervix

65
Q

Uterosacral Ligament

A

More medial ligaments that support uterus around cervix

66
Q

4 Fornices

A

2 Lateral, Anterior, Posterior

67
Q

Posterior Fornix

A

Can sample peritoneal fluid by going through here

68
Q

3 Kinds of Prolapse

A

Uterine, cystocele (bladder pushes into vagina), or rectocele (rectum pushes into the vagina)

69
Q

Prolapse Cause

A

Muscles or ligaments in uterine/vaginal area fail

70
Q

Prostatic hyperplasia

A

Prostate gets too enlarged, puts pressure on urethra as it travels through

71
Q

Pouches (3)

A

Male: rectovesical pouch
Female: vesicouterine and rectouterine pouch (one that you can sample via posterior fornix)

72
Q

3 Branches off Post. Trunk of Internal Iliac

A

Iliolumbar a., lateral sacral a.s, and superior gluteal a.

73
Q

Iliolumbar a.

A

Heads off post. trunk of internal iliac and goes up to supply ilium and lumbar regions

74
Q

Lateral sacral a.s

A

Come off post. trunk of internal iliac and go towards sacrum

75
Q

Superior gluteal a.

A

Main large branch of posterior trunk of internal iliac and goes through greater sciatic foramen to supply muscles of gluteal region

76
Q

8 Arteries off Ant. Trunk of Internal Iliac

A 
Umbilical artery (usually ligamentous, occasionally vesicular)
Superior vesical a.s
Obturator a.
Inferior vesical a. (male)
Uterine a. (female)
Middle rectal a.
Internal pudendal a.
Inferior gluteal a.
77
Q

Obturator a.

A

Comes off AntTrunk of Int Iliac and runs w/ obturator nerve through obturator foramen

78
Q

Internal pudendal a.

A

Comes off anttrunk of int iliac and comes down, around ischialspinous ligament and comes back into perineum and supplies mostly all of perineal

79
Q

Inferior gluteal a.

A

Comes off anttrunk of int iliac, goes through lesser sciatic foramen and supplies gluteal region

80
Q

7 Nerves of Lumbar Plexus

A

Iliohypogastric, ilioinguinal, genitofemoral, lateral femoral cutaneous, femoral, obturator, and lumbosacral trunk

81
Q

5 Nerves of Posterior Division of Sacral Plexus

A

Superior gluteal, inferior gluteal, common fibular (peroneal) nerve of sciatic nerve, lateral half of posterior femoral cutaneous nerve, branches to pirisformis muscle

82
Q

5 Nerves of Anterior Division of Sacral Plexus

A

Tibial nerve of sciatic nerve, pudendal nerve, nerve to quadratus femoris (and inferior gemellus), nerve to obturator internus (and superior gemellus), medial half of posterior femoral cutaneous

83
Q

Superior and Inferior Gluteal Nerves

A

Pass through greater and lesser sciatic foramen, respectively

Anatomy (28 decks)

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