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Gross Anatomy > Intro to Pelvis and Perineum > Flashcards

Intro to Pelvis and Perineum Flashcards

1
Q

ASIS and what lie in same plane?

A

pubic tubercle

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2
Q

Pubic Crest

A

thickening on anterior part of body of pubis

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3
Q

Pubic Tubercle

A

lateral prominent swelling on pubic crest

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4
Q

What makes up the pelvic brim?

A
  1. Promontory and Alae of Sacrum
  2. Arcuate Line of Ilium
  3. Pectin Pubis
  4. Pubic Crest
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5
Q

What comes out of the anterior sacral foramina?

A

ventral rami of sacral spinal nerves

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6
Q

shape of pelvic inlet for males?

A

heart shaped

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7
Q

shape of pelvic inlet for females?

A

oval and rounded

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8
Q

pubic arch and subpubic angle difference in male vs. female

A

male’s narrow; female’s wide

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9
Q

Android Pelvis

A

males

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10
Q

Anthropoid Pelvis

A

males

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11
Q

Gynecoid

A

females

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12
Q

Platypelloid

A

uncommon in both sexes

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13
Q

What are the 4 pelvis shapes?

A

android, anthropoid, gynecoid, platypelloid

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14
Q

Pubic symphysis is in horizontal line with which parts of pelvis?

A

pubic symphysis, ischial spine, tip of coccyx

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15
Q

Pelvic Inlet boundaries

A

pubic crest to sacral promontory

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16
Q

Pelvic Outlet boundaries

A

pubic arch to tip of coccyx

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17
Q

Oblique Conjugate

A

Diameter of the pelvic inlet from the sacroiliac joint of one side to the opposite iliopectineal eminence

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18
Q

Interspinous Distance (10 cm)

A

Distance between 2 ischial spines; normally narrowest, but when woman is ready to deliver, she will secrete relaxin, which softens ligaments and allows pubic symphysis to expand

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19
Q

Anatomical Conjugate

A

Distance between top of pubic symphysis to sacral promontory

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20
Q

True (Obstetric Conjugate)

A

Distance from middle of pubic symphysis to sacral promontory

Narrowest fixed portion of pelvic cavity; cannot be measured directly due to presence of bladder

21
Q

Diagonal Conjugate

A

Distance from inferior portion of pubic symphysis to sacral promontory

22
Q

How big should the obstetric true conjugate be?

A

at least 11 cm

23
Q

What kind of joint is the sacroiliac joint?

A

synovial

24
Q

What kind of joint is the pubic symphysis?

A

Secondary Cartilaginous w/ fibrocartilage interpubic disc

25
Q

What kind of joints are present in lumbosacral joint?

A 
2° cartilaginous (intervertebral disc connecting L5 & S1)
Synovial joints (zygapophyseal/facet joints) between articular processes of L5 &S1
26
Q

Inguinal Ligament

A

from ASIS to pubic tubercle

27
Q

Lacunar Ligament

A

deeper fibers of inguinal ligament that pass posteriorly to attach to superior pubic ramus lateral to pubic tubercle

28
Q

Pectineal Ligament

A

most lateral fibers of lacunar ligament, run along pectin pubis

29
Q

Sacrospinous Ligament

A

sacrum to ischial spine—forms greater and lesser sciatic foramen with sacrotuberous ligament. Divides greater and lesser while sacrotuberous lines the bottom of lesser.

30
Q

Sacrotuberous Ligament

A

sacrum to ischial tuberosities

31
Q

What holds together sacroiliac joint?

A

Anterior and Posterior Sacroiliac Ligaments

32
Q

What connects ilium to lumbar vertebra L5?

A

iliolumbar ligament

33
Q

Superior Pubic Ligament

A

connects superior aspect of pubic bodies and interpubic disc, extending as far laterally as pubic tubercles

34
Q

Inferior Pubic Ligament (Arcuate)

A

connects inferior aspects of pubic symphysis, rounding off subpubic angle as it forms the apex of pubic arch

35
Q

Iliacus Innervation

A

Femoral N. (L2, L3, L4)

36
Q

Psoas Major Innervation

A

Ventral Rami of L2, L3, L4 before they come together as femoral n.

37
Q

Obturator Internus Innervation

A

N. to Obturator Internus (L5, S1, S2)

38
Q

Piriformis Innervation

A

Ventral Rami of S1, S2

39
Q

Psoas Minor Innervation

A

L1, L2 ventral rami

40
Q

Levator Ani Innervation

A

N. to Levator Ani (S4)

41
Q

Coccygeus Innervation

A

Branches of S4, S5 spinal nerves

42
Q

What are the 3 main branches of the pudendal n?

A
  1. Dorsal N of Penis or Clitoris
  2. Deep & Superficial Perineal Nerves
  3. Inferior Rectal N.
43
Q

Ilioinguinal N. & Iliohypogastric

A

L1

44
Q

Genitofemoral

A

L1, L2

45
Q

Lateral Femoral Cutaneous

A

L2, L3

46
Q

Femoral N

A

L2, L3, L4

47
Q

Obturator N

A

L2, L3, L4

48
Q

Lumbosacral Trunk

A

connection from L4 to lumbosacral trunk

Gross Anatomy (9 decks)

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