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ORG ANA: Pelvic Wall Flashcards

1
Q

describe the shape of the pelvis

A

bowl-shaped or basin shaped

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2
Q

what does the pelvis connect

A

connection between abdomen/trunk and LE

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3
Q

what are the 3 main functions of the pelvis

A

transmits weight of body from VC to femurs

support and protect pelvic viscera

attachment for trunk and LE muscles

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4
Q

what does the pelvis contain

A

lower GI and urinary tract

organs of reproduction

nerves, vessels and lymphatics

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5
Q

what is the lateral and anterior wall of the pelvis and its articulations

A

the 2 hip bones

in front - symhpysis pubis
post - sacroiliac joint

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6
Q

what is the posterior wall of the pelvis

A

sacrum and coccyx

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7
Q

what are the 2 parts of the pelvis

A

false and true pelvis

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8
Q

what is the pelvic brim

A

it marks the boundary between the true and false pelvis

above it - false
below it - true

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9
Q

what makes up the pelvic brim

A

ant - symphysis pubis
post - sacral promontory
lat - iliopectineal lines

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10
Q

what is the sacral promontory

A

anterior upper margin of S1

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11
Q

what are iliopectineal lines

A

lines that run downward and forward in the inner surface of the ileum

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12
Q

what is the symphysis pubis

A

joint betw the 2 pubic bones

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13
Q

describe the location of symphysis pubis and ASIS

A

they lie in the same vertical plane

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14
Q

pelvic orientation of symphysis pubis

A

faces upward and backward

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15
Q

pelvic orientation of the sacrum

A

directed downward forward

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16
Q

boundaries of the false pelvis

A

ant - lower abdominal muscles
post - 5 lumbar vertebrae
lat - iliac fossa and iliacus

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17
Q

the false pelvis is considered a part of ______ cavity

A

abdominal cavity

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18
Q

purpose of false pelvis

A

supports abdominal content

guides fetus to true pelvis at early stages

supports uterus at 3 months above

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19
Q

what makes up the true pelvis

A

pelvic inlet, outlet and cavity

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20
Q

what are the boundaries of pelvic outlet

A

ant - pubic arch
post - coccyx
lat - ischial tuberosities
margin - sarcotuberous ligament

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21
Q

what are the 3 wide notches of the pelvic outlet

A

ant - pubic arch
lat - sciatic notches; lesser and greater

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22
Q

what divides the sciatic notches

A

divided by sarcotuberous and sacrospinous ligaments into greater and lesser foramen

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23
Q

where is the pelvic cavity located

A

between inlet and outlet

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24
Q

what are the contents of the pelvic cavity

A

lower portion of intestines and rectum

urinary bladder

internal reproductive organs

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25
Q

what forms the anterior wall of true pelvis

A

bodies of pubic bone, pubic rami and symphysis pubis

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26
Q

it has the shallowest wall in true pelvis

A

anterior wall

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27
Q

it has extensive wall in true pelvis

A

posterior wall

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28
Q

what forms the posterior wall of true pelvis

A

sacrum, coccyx and piriformis

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29
Q

what covers the posterior wall of true pelvis

A

parietal pelvic fascia

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30
Q

openings of the posterior wall of true pelvis

A

anterior sacral foramina
greater and lesser sciatic foramen

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31
Q

what passes through the anterior sacral foramina

A

anterior rami of sacral spinal nerves

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32
Q

what passes through greater sciatic foramen

A

exit from true pelvis to gluteal region for sciatic, pudendal, gluteal nerves/vessels

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33
Q

what forms the lateral wall of pelvis

A

hip bone below pelvic inlet

obturator membrane

sarcotuberous ligament and sacrospinous ligament

obturator internus and fascia

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34
Q

opening of lateral wall

A

obturator foramen

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35
Q

what covers the obturator foramen

A

obturator membrane

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36
Q

what are the contents of the obturator foramen

A

passage of obturator nerve to leave pelvis and enter thigh

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37
Q

what forms the inferior wall

A

formed by pelvic diaphragm

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38
Q

function of pelvic diaphragm

A

divides true pelvis into main cavity and perineum

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39
Q

function of inferior wall

A

supports the pelvic viscera

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40
Q

identify the type of pelvis

most common type - 41%

A

gynecoid

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41
Q

identify the type of pelvis

classical female pelvis

42
Q

identify the type of pelvis

oval at inlet, generous capacity and wide subpubic arch

43
Q

identify the type of pelvis

least common type - 2%

A

platypelloid

44
Q

identify the type of pelvis

flattened at inlet and has a prominent sacrum

A

platypelloid

45
Q

identify the type of pelvis

subpubic arch is wide but ischial spines are prominent

A

platypelloid

46
Q

identify the type of pelvis

favors transverse presentations

A

platypelloid

47
Q

identify the type of pelvis

occurs 24% in white and 41% in black women - 2nd most common

A

anthropoid

48
Q

identify the type of pelvis

oval at inlet but narrow and has a long axis; subpubic arch is slightly narrowed

A

anthropoid

49
Q

identify the type of pelvis

favors occiput posterior presentations

A

anthropoid

50
Q

identify the type of pelvis

33% of white and 16% of black females - 3rd most common

51
Q

identify the type of pelvis

triangular inlet and narrowed subpubic arch

52
Q

identify the type of pelvis

aka male or funnel shaped pelvis

53
Q

relate delivery to an android pelvis

A

larger babies have hard time bcs of bony prominence kase funnel shaped but smaller can squeeze through

54
Q

what makes up the pelvic diaphragm

A

levatores ani and occygeous muscles and their fascia

55
Q

why is the pelvic diaphragm incomplete anteriorly

A

allows passage of urethra in males and urethra and vagina in females

56
Q

location of anterior fibers of levator ani

A

forms a sling around the prostate or vagina

57
Q

function of anterior fibers of levator ani

A

support prostate, constricts vagina and stabilizes perineal body

58
Q

location of puborectalis fibers of levator ani

A

sling around rectum and anal canal

59
Q

function of puborectalis fibers of levator ani

A

sphincter for poop

60
Q

intermediate fibers of levator ani

A

puborectalis and pubococcygeous

61
Q

location of posterior fibers of levator ani

A

iliococcygeus is from iluem to coccyx

62
Q

action of levator ani

A

form muscle sling that supports and maintains pelvic viscera in positions

resist rise in intrapelvic pressure - resist GI organs in reaching pelvis

sphincter action

63
Q

nerve supply of levator ani

A

perineal branch of 4th sacral nerve and perineal branch of pudendal

64
Q

it is continous with fascia of abdomen and perineum

A

pelvic fascia

65
Q

what does parietal pelvic fascia line

A

lines walls of pelvis

66
Q

what does visceral layer of pelvic fascia lines

A

covers and supports pelvic viscera

67
Q

where is the sacral plexus found

A

in front of piriformis in posterior pelvic wall

68
Q

what forms the sacral plexus

A

anterior rami of L4, L5, S1-S4

69
Q

branches of sacral plexus

A

sciatic
superior and inferior gluteal
nerve to quad fem
nerve to obturator internus
posterior cutaneous nerve of thigh
pudendal
nerve to piriformis

70
Q

arteries that enter the pelvic cavity

A

internal iliac
superior rectal - inferior mesenteric
ovarian - aorta
median sacral - aorta

71
Q

what does internal iliac artery supply

A

all organs within pelvis

72
Q

anterior divisions of internal iliac artery

A

umbilical
vaginal or inferior vesical
middle rectal
uterine

obturator
internal pudendal
inferior gluteal

73
Q

what does umbilical artery supply

A

branches to superior vesical and supplies upper part of bladder

74
Q

what does vaginal artery supply

A

vagina and base of bladder

75
Q

what does inferior vesical artery supply

A

base of bladder

prostate and seminal vesicles

76
Q

what does middle rectal artery supply

A

lower rectum

77
Q

what does uterine artery supply

A

uterine tube

78
Q

posterior branches of internal iliac artery

A

iliolumbar
lateral sacral
superior gluteal

MGA WALA NA SA PELVIS

79
Q

what does iliolumbar artery supply

A

pass laterally to supply pelvic inlet, psoas and iliacus

80
Q

what does lateral sacral artery supply

A

sacrum before terminating as posterior gluteal artery

81
Q

what does superior gluteal artery supply

A

gluteal region

82
Q

what does superior rectal artery supply

A

rectum and upper half of anal canal

83
Q

what does ovarian artery supply

A

supply ovary

vesticular artery in males - supply testes

84
Q

what does median sacral artery supply

A

anterior surface of sacrum and coccyx

85
Q

what does external iliac vein drain

A

posterior gluts and legs

86
Q

what does interal iliac vein drain

A

pelvis mga uterine ganun

87
Q

what does median sacral vein drain

88
Q

lymphatics of pelvis

A

external iliac, internal ilaic and common iliac nodes

89
Q

identify if male or female pelvis

false pelvis is deeper

90
Q

identify if male or female pelvis

false pelvis is shallower

91
Q

identify if male or female pelvis

pelvic inlet is heart shaped

92
Q

identify if male or female pelvis

pelvic inlet is oval and narrow transversely

93
Q

identify if male or female pelvis

pelvic outlet is smaller and narrower

94
Q

identify if male or female pelvis

pelvic outlet is larger and roomier

95
Q

identify if male or female pelvis

ischial spine is inverted

96
Q

identify if male or female pelvis

ischial spine is everted

97
Q

identify if male or female pelvis

pubic arch is narrower

98
Q

identify if male or female pelvis

pubic arch is more rounded and wider

99
Q

identify if male or female pelvis

sacrum is long and narrow

100
Q

identify if male or female pelvis

sacrum is short, wide and flat

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