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Unit 2 (mine) > Actions - Trunk Muscles > Flashcards

Actions - Trunk Muscles Flashcards

1
Q

coccygeus

A

suports and compresses posterior pelvic floor

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2
Q

levator ani

A

supports pelvic viscera and compresses rectum and vagina

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3
Q

intercostal (external)

A

elevates ribs

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4
Q

intercostal (internal and innermost)

A

depresses ribs

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5
Q

transversus thoracis

A

depresses ribs

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6
Q

cremaster

A

elevates testicles

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7
Q

diaphragm

A

inspiration (negative thoracic pressure)

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8
Q

external oblique

A

flexion and rotation of the trunk, compression of abdominal cavity

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9
Q

internal oblique

A

flexion and rotation of the trunk, compression of abdominal cavity

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10
Q

quadratus lumborum

A

extension and lateral flexion of trunk, fixes 12th rib during respiration

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11
Q

rectus abdominis

A

flexion of trunk, compression of abdominal cavity

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12
Q

transversus abdominis

A

compression of abdominal cavity

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13
Q

iliacus

A

flexes thigh, stabilizes hip joint

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14
Q

psoas

A

flexes thigh, stabilizes hip joint

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15
Q

piriformis

A

abducts and laterally rotates thigh

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16
Q

obturator internus

A

laterally rotates thigh

17
Q

bulbospongiosus

A

in male empties urethra, maintains erection and contracts during ejaculation; in female constricts vaginal orifice and contributes to erection of clitoris

18
Q

ischiocavernosus

A

compresses crus during erection

19
Q

sphincter ani externus

A

closes anal canal and fixes perineal body

20
Q

sphincter urethrae (male)

A

compresses urethra

21
Q

compressor urethrae (female)

A

compresses urethra

22
Q

sphincter urethrovaginalis (female)

A

compresses urethra and vagina

23
Q

deep transverse perineus (male)

A

fixes perineal body

24
Q

superficial transverse perineus

A

fixes perineal body

Unit 2 (mine) (6 decks)

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