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Gross Anatomy Exam 3 > Actions > Flashcards

Actions Flashcards

1
Q

What is the action of rectus abdominus

A

Flex the trunk
Compress the abdomen
Stabilize the pelvis

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2
Q

What is the action of transversus abdominus

A

Uni: ipsilateral rotation
Bi: compress the abdomen

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3
Q

What is the action of external oblique

A

Uni: ipsilateral lateral flexion, contralateral rotation
Bi: flex the trunk, compress the abdomen, stabilize the pelvis

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4
Q

What is the action of the internal oblique

A

Uni: ipsilateral lateral flexion, contralateral rotation
Bi: flex the trunk, compress the abdomen, stabilize the pelvis

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5
Q

What is the action of diaphragm

A

Respiration

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6
Q

What is the action of psoas major

A

Hip joint: flexion and external rotation

Lumbar spine: return spine to upright position

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7
Q

What is the action of psoas minor

A

Weak flexor of the trunk

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8
Q

What is the action of ilacus

A

Works with psoas major

Flexes thigh, stabilizes hip joint

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9
Q

What is the action of quadratus lumborum

A

Uni: ipsilateral lateral flexion
Bi: stabilizes 12th rib

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10
Q

What is the action of intercostals

A

External: inspiration (raises ribs)

Internal and innermost: expiration (lowers ribs)

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11
Q

What is the action of transversus thoracis

A

Weakly lowers ribs ( expiration)

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12
Q

What is the action of diaphragm hiatus and crura

A

Respiration

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13
Q

What is the action of levator ani

A

Support pelvic viscera

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14
Q

What is the action of coccygeus

A

Support pelvic viscera

Flex coccyx

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15
Q

What is the action of piriformis

A

External rotation
ABduction
Stabilizes flexed hip

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16
Q

What is the action of Obturator internus

A

External rotation

ABduction of flexed hip

17
Q

What is the action of ishiocavernosus

A

Maintains an erection by squeezing blood into clitoris or penis corpus caverunosum

18
Q

What is the action of bulbospongiosus

A

Females: compress vestibular gland
Male: maintain erection

19
Q

What is the action of superficial transverse perineal

A

Helps pelvic organs

Closes urethra

20
Q

What is the action of external anal spinchter

A

Closes anus

21
Q

What is the action of omohyoid, sternohyoid,sternothyroid

A

Depresses the hyoid and larynx for phonation and swallowing

22
Q

What is the action of thyrohyoid

A

Depress hyoid, elevate larynx for swallowing

23
Q

What is the action of masseter

A

Elevates and protrudes mandible

24
Q

What is the action of temporalis

A

Elevates, retracts, laterally deviates mandible

25
Q

What is the action of lateral pterygoid

A

Bi laterally: protrudes mandible

Unilateral: lateral deviation

26
Q

What is the action of medial pterygoid

A

Elevates mandible

Works with lateral pterygoid for ipsilateral lateral deviation

27
Q

What is the action of platysma

A

Forced depression of mandible

Tenses skin on neck

28
Q

What is the action of digastric

A

Elevates the mandible for swallowing

29
Q

What is the action of Stylohyoid

A

Elevates the mandible for swallowing

30
Q

What is the action of mylohyoid

A

Depress the mandible
Draws hyoid forward for swallowing
Lateral deviation for chewing

31
Q

What is the action of geniohyoid

A

Depress mandible

Draws hyoid forward for swallowing

Gross Anatomy Exam 3 (6 decks)

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