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BI 231 Trunk/Head Muscles > Functions > Flashcards

Functions Flashcards

1
Q

Frontalis

A

Raises eyebrows

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2
Q

Occipitalis

A

Pulls scalp posteriorly

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3
Q

Mentalis

A

Protrudes lower lip

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4
Q

Risorius

A

Draws corner of lip laterally

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5
Q

Buccinator

A

draws corner of lips laterally

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6
Q

Orbicularis oculi

A

Closes eyelids

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7
Q

Orbicularis oris

A

Closes lips

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8
Q

Zygomaticus

A

Elevates corners of mouth

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9
Q

Depressor labii inferioris

A

Draws corners of mouth down and laterally

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10
Q

Masseter

A

Elevates mandible

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11
Q

Temporalis

A

Elevate and retract mandible

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12
Q

Platysma

A

Depress mandible

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13
Q

Sternocleidomastoid

A

Flex neck and rotate head

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14
Q

Digastrics

A

Elevate hyoid, open mouth, depress mandible

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15
Q

Scalenes

A

Flex and rotate neck, elevate ribs

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16
Q

Stylohyoid

A

Elevates and retracts hyoid

17
Q

Mylohyoid

A

Elevates hyoid bone during swallowing

18
Q

Levator scapulae

A

Raises scapula

19
Q

Sternohyoid

A

Depresses larynx

20
Q

Pectoralis minor

A

Elevates upper ribs

21
Q

External intercostals

A

Elevate rib cage, aid in inspiration

22
Q

Rectus abdominis

A

Flex and rotate vertebral column

23
Q

Serratus anterior

A

Move scapula forward, rotate scapula

24
Q

Internal intercostals

A

Depress rib cage, aid in expiration

25
Q

Transversus abdominis

A

Compress abdominal contents

26
Q

External oblique

A

Flex and rotate vertebral column, trunk rotation, lateral flexion

27
Q

Internal oblique

A

Flex and rotate vertebral column, trunk rotation, lateral flexion

28
Q

Trapezius

A

Extend neck; raise, rotate, and adduct scapula

29
Q

Erector spinae

A

Extend neck and vertebral column

30
Q

Latissimus dorsi

A

Arm extension; adduct and rotate arm

BI 231 Trunk/Head Muscles (5 decks)

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