chap 10 muscular system ID with actions Flashcards by justin morse

Q

masseter

A

jaw closure

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Q

epicranius, frontal belly

A

raises eyebrows

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Q

platysma

A

tenses skin of neck

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Q

zygomaticus

A

smiling

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Q

orbicularis oculi

A

closes eyelids

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Q

orbicular oris

A

closes lips

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Q

sternocleidomastoid

A

neck flexion

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Q

diaphragm

A

inspiration

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Q

rectus abdominus

A

flex vertabral column

compresses abdomen

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Q

latissimus dorsi

A

arm adduction, shoulder extension

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Q

pectoralis major

A

arm adduction, shoulder flexion

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Q

deltoid

A

arm abduction

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Q

biceps brachii

A

flexes elbow joint and supinates forearm

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Q

triceps brachii

A

elbow extension

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Q

trapezius

A

elevates scapula, shoulder shrug.

can tense up during anxiety

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Q

quadriceps femoris

A

group name of 4 muscles and extend the knee

Q

glutues maximus

A

extension of thigh

Q

gluteus medius

A

abduction, medial rotation of the thigh

Q

hamstrings

A

group of muscles: knee flexion & PM of thigh extension

Q

tibialis anterior

A

PM dorsiflexion & inversion of foot

Q

gastrocnemius

A

plantar flexion of foot