Chapter 6B Muscle Functions Flashcards by Anna Lewis

Q

Orbicularis oculi

A

Blinks and closes eye

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Q

Frontalis

A

Raises eyebrows

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Q

Orbicularis oris

A

Closes and protrudes lips

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Q

Buccinator

A

Compresses cheek

Holds food between teeth during chewing

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Q

Zygomaticus

A

Raises corner of mouth

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Q

Masseter

A

Closes jaw

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Q

Temporalis

A

Closes jaw

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Q

Platysma

A

Tenses skin of neck

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Q

Sternocleidomastoid

A

Flexes neck

Laterally rotates head

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Q

Pectoralis major

A

Adducts and flexes humerus

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Q

Intercostal muscles

A

Depresses ribs

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Q

Rectus abdominis

A

Flexes vertebral column

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Q

External oblique

A

Flexes and rotates vertebral column

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Q

Internal oblique

A

Flexes and rotates vertebral column

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Q

Transversus abdominis

A

Compresses abdomen

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Q

Trapezius

Study These Flashcards

A

Raises, retracts, and rotates scapula

Q

Latissimus Dorsi

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A

Extends and adducts humerus

Q

Erector Spinae

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A

Extends and laterally flexes spine

Q

Quadratus Lumborum

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A

Extends and flexes spine laterally

Q

Deltoid

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A

Abducts humerus

Q

Biceps branchii

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A

Flexes elbow

Supinate a forearm

Q

Brachialis

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A

Flexes elbow

Q

Brachioradialis

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A

Flexes forearm

Q

Triceps branchii

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A

Extends elbow

Gluteus Maximus

Extends hip

Gluteus medius

Abducts thigh | Steadies pelvis during walking

Iliopsosa

Flexes hip

Adductor muscles

Adducts and medially rotates thigh

Hamstring group

Flexes knee | Extends hip

Tibialis anterior

Dorsiflexes and inverts foot

Extensor digitorum longus

Extends toes

Fibularis muscles

Plantar flexes and everts foot

Gastrocnemius

Plantar flexes foot | Flexes knee

Soleus

Plantar flexes foot