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Muscles O,I&A's > Muscles of pelvis & perineum > Flashcards

Muscles of pelvis & perineum Flashcards

1
Q

Origin of Coccygeus

A

Ischial spine

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2
Q

Insertion of Coccygeus

A

Side of coccyx
Lower Sacrum

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3
Q

Action of Coccygeus

A

Elevates pelvic floor

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4
Q

Origin of iliococcygeus

A

Arcus tendineus levator ani
Ischial Spine

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5
Q

Insertion of iliococcygeus

A

Coccyx
Anococcygeal raphe

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6
Q

Action iliococcygeus

A

Elevates pelvic floor

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7
Q

Origin of Levator Ani

A

Posterior surface of body of pubis
Fascia of obturator internus
Ischial spine

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8
Q

Insertion of Levator Ani

A

Coccyx
Anococcygeal raphe

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9
Q

Action of Levator Ani

A

Elevates pelvic floor

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10
Q

Origin of Pubococcygeus

A

Posterior aspect of superior pubic ramus

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11
Q

Insertion of Pubococcygeus

A

Coccyx

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12
Q

Action of Pubococcygeus

A

Elevates pelvic floor

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13
Q

Origin of Puborectalis

A

Posterior aspect of the body of the pubis

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14
Q

Insertion of Puborectalis

A

Unites with puborectalis muscle of other side posterior to rectum

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15
Q

Action of Puborectalis

A

Draws the distal rectum forward and superiorly
Aids in voluntary retention of feces

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16
Q

Origin of Deep Transverse Perineus

A

Medial surface of ischial ramus

17
Q

Insertion of Deep Transverse Perineus

A

Contralateral muscle and perineal body

18
Q

Action of Deep Transverse Perineus

A

Fixes and stabilizes perineal body

19
Q

Origin of Superficial Transverse Perineus

A

Medial Surface of Ischial Ramus

20
Q

Insertion of Superficial Transverse Perineus

A

Contralateral muscle and perineal body

21
Q

Action of Superficial Transverse Perineus

A

Fixes and stabilizes perineal body

22
Q

Origin of External Anal Sphincter

A

Perineal body or central tendinous point of perenieum

23
Q

Insertion of External Anal Sphincter

A

Encircles the anal canal ;
Superficial fibers attach to the coccyx

24
Q

Action of External Anal Sphincter

A

Constricts the anal canal

25
Q

Origin of Internal Anal Sphincter

A

Encircles anal canal

26
Q

Insertion of Internal Anal Sphincter

A

Encircles anal canal

27
Q

Action of Internal Anal Sphincter

A

Constricts anal canal

Muscles O,I&A's (27 decks)

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