Muscle Actions Flashcards by SHa John

Q

Occipitofrontalis(frontal belly)

A

Wrinkles forehead

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Q

Occipitofrontalis(occipital belly)

A

Draws scalp backward

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Q

Orbicularis oris

A

Closes lips

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Q

Depressor labii inferioris

A

Lowers lower lip

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Q

Platysma

A

Depresses mandible

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Q

Orbicularis oculi

A

Closes eye

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Q

Temporalis

A

Elevates mandible

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Q

Sternocleidomastoid

A

Turns head to side

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Q

Rectus abdominis

A

Flexes vertrbral column

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Q

External oblique

A

Compresses abdomen

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Q

Serratus anterior

A

Rotates scapula laterally

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Q

Trapezius

A

Extends head

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Q

Pectoralis major

A

Adducts arm

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Q

Latissimus dorsi

A

Draws shoulder downward and backward

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Q

Deltoid

A

Abducts arm

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Q

Biceps brachii

A

Flexes forearm

Q

Triceps brachii

A

Extends forearm

Q

Pronator teres

A

Prontes forearm

Q

Extensor carpi radialis longus

A

Extends wrist

Q

Flexor carpi radialis

A

Flexes wrist

Q

Extensor digitorum

A

Extends phalanges

Q

Gluteus maximus

A

Extends thigh

Q

Tensor fasciae latae

A

Flexes thigh

Q

Adductor longus

A

Adducts thigh

Q

Rectus femoris

A

Extend leg

Q

Vastus lateralis

A

Extend leg

Q

Vastus medialis

A

Extend leg

Q

Biceps femoris

A

Flex leg

Q

Semitendinosus

A

Flex leg

Q

Semimembranosus

A

Flex leg

Q

Gracilis

A

Flexes leg

Q

Sartorius

A

Assists in crossing legs

Q

Gastrocnemius

A

Plantar flexes foot

Q

Fibularis longus

A

Everts foot