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Biology 223 - FALL 2022 > Lab #5 - functions of muscle groups > Flashcards

Lab #5 - functions of muscle groups Flashcards

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1
Q

Frontalis

A

elevates eyebrows
wrinkles skin of forehead

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2
Q

occipitalis

A

pulls scalp posteriorly

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3
Q

buccinator

A

compresses the cheek

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4
Q

orbicularis oculi

A

closes the eye

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5
Q

orbicularis oris

A

closes and protrudes the lip

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6
Q

mentalis

A

elevates and protrudes the lip

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7
Q

platysma

A

depresses lower lip
tenses skin of neck

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8
Q

zygomaticus major

A

pulls angle of mouth superiorly and laterally

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9
Q

zygomaticus minor

A

elevates lateral portion of the lip

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10
Q

temporalis

A

retracts and elevates mandible

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11
Q

masseter

A

closes jaw
elevates mandible

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12
Q

splenius captious

A

extends the neck

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13
Q

sternocleidomastoid

A

flexes neck

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14
Q

erector spinae

A

extends vertebral column

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15
Q

external intercostals

A

elevates rib cage

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16
Q

internal intercostals

A

depresses rib cage

17
Q

diaphragm

A

expands thoracic cavity
compresses abdominopelvic cavity

18
Q

rectus abdominus

A

compresses abdominal cavity
flexes vertebral column

19
Q

internal obliques

A

flexes or bends spine
compresses abdomen

20
Q

external obliques

A

flexes or bends spine
compresses abdomen
depresses ribs

21
Q

transversus abdominus

A

compresses abdomen

22
Q

pectoralis minor

A

elevates ribs
protracts and depresses scapula

23
Q

levator scapulae

A

rotates, elevates, and retracts scapula

24
Q

serratus anterior

A

protracts scapula
superior rotation of scapula

25
Q

trapezius

A

rotates scapula posteriorly
retracts and depresses scapula

26
Q

subclavius

A

protracts and depresses shoulder

27
Q

rhomboid major

A

adducts scapula
performs downward rotation

28
Q

rhomboid minor

A

adducts scapula
performs downward rotation

Biology 223 - FALL 2022 (14 decks)

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