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A&P > Muscles Of Head, Neck, Trunk > Flashcards

Muscles Of Head, Neck, Trunk Flashcards

(28 cards)

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1
Q

Action: Raises eyebrow, wrinkles forehead

A

Frontalis (5)

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2
Q

Action: Compresses & dilates nostrils

A

Nasalis (21)

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3
Q

Action: Closes eyelid

A

Orbicularis oculi (10)

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4
Q

Action: Closes & protrudes lips

A

Orbicularis oris (13)

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5
Q

Action: Elevate corner of mouth

A

Zygomaticus major (14)

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6
Q

Action: Elevate upper lip

A

Zygomaticus minor (11)

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7
Q

Action: Depress mandible

A

Platysma

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8
Q

Action: Retract corner of mouth

A

Risorius (17)

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9
Q

Action: Compress cheeks

A

Buccinator (15)

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10
Q

Action: Elevates mandible, closes jaw

A

Masseter (16)

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11
Q

Action: Elevates Mandible

A

Temporalis

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12
Q

Action: opens jaw

A

Lateral pterygoid

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13
Q

Action: elevates mandible, closes jaw

A

media pterygoid

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14
Q

Action: (both) flexes neck (single) rotates head to opposite side
Origin: sternum, clavicle
Insertion: Mastoid process of temporal bone

A

Sternocleidomastoid (28)

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15
Q

Action: elevates ribs, flex neck
Origin: cervical vertebrae
Insertion: First 2 ribs

A

Scalenes (29,30)

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16
Q

Action: (both) extends neck (single) rotates & laterally flexes head to same side
Origin: Nuchal ligament, spinous processes of C7-T3
Insertion: Mastoid process of temporal bone, occipital bone

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A

Splenius capitis (32)

17
Q

Action: Depress ribs

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A

Internal Intercostals (99)

18
Q

Action: Elevate ribs

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A

External intercostals

19
Q

Action: Expands thoracic cavity

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A

Diaphragm (104)

20
Q

Action: Compresses abdomen, depresses ribs, flexes spine

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A

External oblique (111)

21
Q

Action: Compresses abdomen, depresses ribs, flexes spine

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A

Internal oblique

22
Q

Action: Compresses abdomen

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A

Transversus abdominis (118)

23
Q

Action: Compresses abdomen, depresses ribs, flexes spine

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A

Rectus Abdominis (114)

24
Q

Action: compresses & stiffens penis or clitoris

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A

Ischocavernosus

25
Action: (Male) compresses base, stiffens penis, ejects urine/semen (Female) compresses & stiffens clitoris, narrows vaginal opening
Bulbospongiosus
26
Action: Tenses floor of pelvis, elevates & retracts anus
Levator ani
27
Action: Closes urethral opening
External Urethral Sphincter
28
Action: Stabilizes perineum
Deep transverse perineal

A&P (5 decks)

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