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Anatomy 2 > Pelvis > Flashcards

Pelvis Flashcards

1
Q

Divergance laterally with the gap in between the urogenital diaphragm

A

Subfasical space

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2
Q

Separates the deep and superficial perineal spaces

A

Deep perineal fascia (perineal membrane)

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3
Q

Separates the superficial perineal and subcutaneous perineal spaces

A

Colle’s Fascia (superficial perineal fascia)

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4
Q

Superior surface of the pelvis

A

Falase (Greater) pelvis

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5
Q

Inferior surface of the pelvis

A

True (lesser) pelvis

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6
Q

Dividing line between the true and false pelvises

A

Linea Terminalis (Pelvic brim/Pelvic inlet)

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7
Q

What cavities does the linea terminalis demarcate?

A

Peritoneal cavity (into greater pelvis) and pelvic cavity(lesser pelvis)

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8
Q

What 3 bony landmarks does the linea terminalis incorporate?

A

Pubic tubercle, pectineal line, arcuate line

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9
Q

Term for the arcuate line and continuation of the pectineal line

A

Iliopectineal line

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10
Q

Elevation on the superior margin of the pubic symphysis which serves as the main attachment site for the inguinal ligament

A

Pubic tubercle

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11
Q

Ridge of bone extending from the pubic tubercle along the superior ramus of the pubis to the level of the acetabulum; lacunar ligament attaches here

A

Pectineal line

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12
Q

Along the medial surface of the ilium from the acetabulum to the sacroiliac joint, posterior continuation of the pectineal line

A

Arcuate line

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13
Q

Separates the greater and lesser sciatic notches

A

Ischial spine

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14
Q

Spans from the anterlateral surface of the sacrum to the ischial spine

A

Sacrospinous ligament

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15
Q

Spans from the posterior surface of the sacrum to the ischial tuberosity

A

Sacrotuberous ligament

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16
Q

Superior gap in the obturator membrane

A

Obturator canal

17
Q

What does the obturator canal contain?

A

Obturator artery (off of internal iliac a.), vein, nerve (from L2-L4)

18
Q

Subpubic angle in males and females

A

Males: 60, females: 85

19
Q

Difference between male and female pelvis

A

Male: heavier, thicker, more prominent bony markings. Female: wider, shallower, shorter/more everted ischial tuberosities

20
Q

4 borders of the pelvic canal

A

Pelvis inlet (superior), pubic symphysis (anterior), sacral promontory (posterior), Pelvis outlet (inferior:coccyx)

21
Q

Shape of pelvic inlet in males and females

A

Males: heart, Females: ovate

22
Q

Medial surface b/t the pelvic inlet and outlet

A

Wll of the pelvic cavity (obturator foramen, greater/lesser sciatic foramina)

23
Q

2 muscles of the pelvic wall

A

Piriformis, Obturator internus

24
Q

Innervation of the piriformis

A

nerve to piriformis (S1/2)

25
Q

Origin and nerve to obturator internus

A

Origin: obturator membrane, nerve: nerve to obturator internus (L5-S2)

26
Q

What does the piriformis divide the greater sciatic foramen into?

A

Suprapiriform and infrapiriform foramen

27
Q

Path of the pudendal nerve

A

(S2-S4) out of infrapiriform foramen inferior to sciatic nerve, loops of ischial spine, passes medially thru lesser sciatic foramen, b/t sacrospinous and sacrotuberous ligs, along inferior margin of obturator internus

28
Q

Space b/t the sacrospinous and sucrotuberous ligaments, that continues down b/t the obturator internus and the obturator fascia

A

Pudendal canal

29
Q

4 muscles of the pelvic diaphragm

A

Coccygeus, Iliococygeus, Pubococcygeus, Puborectalis

30
Q

What is the combination of the iliococcygeus, pubococcygeus, and puborectalis called and innervation?

A

Levator Ani, S3-S4 for all 3 muscles (some pudendal also)

31
Q

triangular muscle located on the anterior surface of the
sacrospinous ligament to which it is partially fused, and its innervation

A

Coccygeus, S4-S5

32
Q

Originates off of the Tendinous arch of the obturator internus and inserts into the coccyx and raphe

A

Iliococcygeus, S3-S4

33
Q

Thick, midline raphe of the pelvic diaphragm

A

Anococcygeal ligament

34
Q

Arrangement of the levator ani muscles

A

Iliococcygeus(Posterior), Pubococcygeus (anterior and slighty superior), Puborectalis (medial)

35
Q

Which muscle forms a sling around the rectum?

A

Puborectalis

36
Q

2 spaces defined by the puborectalis

A

Urogenital hiatus, anal hiatus

37
Q

Separates the urogential and the anal hiatus

A

Prerectal fibers

38
Q

What are the prerectal fibers fused to?

A

Perineal body

39
Q

What is the “kink” in the anorectal juncture called?

A

Rectal sling (Perineal Flexure)

Anatomy 2 (10 decks)

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