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Anatomy > Head And Neck Action And Nerve > Flashcards

Head And Neck Action And Nerve Flashcards

1
Q

SCM action and innervation

Unilateral vs bilateral

A

Uni- lateral flexion of head
Bi- flexion of head and neck
Spinal accessory nerve CN XI

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2
Q

Trapezius action and innervation

A

Upper elevates scapula, middle retracts scapula, lower depresses scapula

Spinal accessory nerve CN XI

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3
Q

Digastric anterior belly action and innervation

A

Elevates hyoid

Trigeminal nerve, mandibular division V3

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4
Q

Digastric posterior belly action and innervation

A

Elevates hyoid

Facial, CN VII

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5
Q

Mylohyoid action and innervation

A

Elevates hyoid

Trigeminal, mandibular division v3

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6
Q

Stylohyoid action and innervation

A

Elevates hyoid, trigeminal mandibular division v 3

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7
Q

Omohyoid action and innervation

A

Depresses hyoid

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8
Q

Sternohyoid action

A

Depresses hyoid

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9
Q

Sternothyroid action

A

Depresses hyoid

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10
Q

Thyrohyoid action

A

Depresses hyoid

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11
Q

4 muscles that depress hyoid

A

Omohyoid, sternohyoid, thyrohyoid, sternothyroid

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12
Q

4 muscles that elevate hyoid

A

Ant and post belly of digastric, mylohyoid, stylohyoid

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13
Q

Cricothyroid action and innervation

A

Tenses vocal ligament

Vagus, CN X, external laryngeal nerve

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14
Q

Temporalis action and innervation

A

Elevates and retracts mandible

Trigeminal, mandibular division v3

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15
Q

Master action and innervation

A

Elevates and protrudes mandible

Trigeminal, mandibular division v3

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16
Q

Medial pterygoid action and innervation

A

Elevates and protrudes mandible

Trigeminal, mandibular division v3

17
Q

Lateral pterygoid action and innervation

A

Retracts mandible

Trigeminal, mandibular division v3

18
Q

Muscles of mastication 4

A

Temporalis, masseter, medial and lateral pterygoid

19
Q

Platysma action and innervation

A

Tenses skin of neck, widens mouth, and pulls corners of mouth inferolaterally

Facial, CN vii

20
Q

Buccinator action and innervation

A

Presses cheek against molars, CN VII

21
Q

Orbicularis occuli action and innervation

A

Palpebral closes gently, orbital closes tightly

Facial CN VII

22
Q

Orbicularis oris action and innervation

A

Compresses and protrudes lips

Facial CN VII

23
Q

Occipitofrontalis action and innervation

A

Elevates eyebrows, facial CN VII

24
Q

Muscles of facial expression 5

A

Platysma, buccinator, orbicularis oris and occuli, occipitofrontalis (frontal belly)

Anatomy (23 decks)

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