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GIGU Exam 2 > 4: Pelvic Osteology, Arthrology, Myology > Flashcards

4: Pelvic Osteology, Arthrology, Myology Flashcards

1
Q

What two lines on the coxal bone form the linea terminalis?

A

Pectinate line + arcuate line

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2
Q

What runs in the obturator groove?

A

Obturator N, A, V

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3
Q

What forms the median, medial, and lateral sacral crests?

A

Median: fused spinous processes
Medial: fused articulating processes
Lateral: fused transverse processes

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4
Q

What does the sacral canal transmit?

A

Cauda equina

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5
Q

Two parts of the intervertebral disc

A

Annulus fibrosis + nucleus pulposus

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6
Q

Two attachments of inguinal L

A

Pubic tubercle -> ASIS

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7
Q

Ischioanal fossa

A

Space around anal canal filled with fat and loose CT to allow for expansion of anal canal during defecation

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8
Q

What three things are transmitted by the pudendal canal?

A

Pudendal A, V, N

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9
Q

Attachments of the perineal membrane

A

Between the two sides of the pubic arch

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10
Q

Fatty superficial perineal fascia in female and male

A

Female: forms fatty layers of labia majora and mons pubis
Males: not present, replaced by penis and scrotum

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11
Q

Membranous superficial perineal fascia in male

A

Forms dartos fascia of penis and scrotum

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12
Q

Deep perineal fascia in females

A

Exists primarily as the perineal membrane

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13
Q

Contents of the superficial perineal pouch in males

A
  1. Bulb and crura of penis
  2. Superficial perineal muscles
  3. Proximal spongy urethra
  4. Branches of internal pudendal A, V, N
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14
Q

Contents of the superficial perineal pouch in females

A
  1. Crura of clitoris and bulbs of vestibule
  2. Superficial perineal muscles
  3. Greater vestibular glands
  4. Branches of internal pudendal A, V, N
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15
Q

Contents of the deep perineal pouch in males

A
  1. Membranous urethra
  2. Muscles of urogenital diaphragm
  3. Bulbourethral glands
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16
Q

Contents of the deep perineal pouch in females

A
  1. Muscles of urogenital diaphragm
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17
Q

Superficial transverse perineal O and I

A

O: ischial tuberosity
I: perineal body

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18
Q

Superficial and deep transverse perineal M actions

A

Supports perineal body, supports abdominopelvic viscera

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19
Q

N to all three superficial perineal muscles

A

Deep perineal N

20
Q

Ischiocavernosus O and I

A

O: ischial tuberosity
I: medial aspect of crus of penis or clitoris

21
Q

Ischiocavernosus action

A

Maintain erect penis or clitoris by compressing venous drainage, forcing blood from crura into body of penis/clitoris

22
Q

Bulbospongiosus O and I

A

O: perineal body (+bulb of penis in males)
I: perineal membrane

23
Q

Bulbospongiosus action

A

Support and fix perineal body, compress bulb of penis for erection, compress vaginal orifice for erection of bulbs of vestibule of vagina

24
Q

External urethral sphincter location

A

Surrounds urethra

25
Q

External urethral sphincter action

A

Constricts urethra, maintaining urinary continence

26
Q

External urethral sphincter N

A

Dorsal nerve of the penis or clitoris

27
Q

Deep transverse perineal O and I

A

O: ischial tuberosity
I: perineal body, external anal sphincter

28
Q

Deep transverse perineal muscle N

A

Deep perineal N

29
Q

External anal sphincter O and I

A

O: skin/fascia around anus
I: perineal body

30
Q

External anal sphincter N

A

Inferior rectal N

31
Q

Puborectalis O and I

A

O: posterior pubic body
I: external wall of rectum/anal canal

32
Q

Puborectalis action

A

Maintain anorectal flexure, support pelvic viscera

33
Q

Levator ani muscles innervation (3)

A

Nerve to levator ani, inferior rectal N, branches of coccygeal plexus

34
Q

Pubococcygeus O and I

A

O: posterior pubic body, anterior part of tendinous arch of obturator fascia
I: coccyx n stuff

35
Q

Pubococcygeus action

A

Supports pelvic viscera

36
Q

Iliococcygeus O and I

A

O: posterior tension Ou’s arch of obturator fascia, ischial spine
I: coccyx

37
Q

Iliococcygeus action

A

Supports pelvic viscera

38
Q

Coccygeus O and I

A

O: ischial spine
I: inferior sacrum and coccyx

39
Q

Coccygeus two actions

A
  1. Support pelvic viscera

2. Flex coccyx

40
Q

Coccygeus N

A

Nerve to coccygeus

41
Q

Obturator internus O and I

A

O: ilium, ischium, obturator membrane
I: greater trochanter of femur

42
Q

Obturator internus action

A

Rotate thigh laterally, stabilize femoral head

43
Q

Obturator internus N

A

Nerve to obturator internus

44
Q

Piriformis O and I

A

O: sacrum, greater sciatic notch
I: greater trochanter

45
Q

Piriformis action

A

Rotate thigh laterally, abduct thigh, stabilize femoral head

46
Q

Piriformis N

A

Nerve to piriformis

GIGU Exam 2 (19 decks)

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