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SA Anatomy > Head and Neck Muscles > Flashcards

Head and Neck Muscles Flashcards

Action and Innervation for each muscle

1
Q

Platysma

A

A: growl muscle
I: Facial n. (VII)

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2
Q

Orbicularis oris

A

A: snarl muscle
I: Facial n. (VII)

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3
Q

Buccinator

A

A: Return food from vestibule to occlusal surface of teeth
I: Facial n. (VII)

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4
Q

Levator nasolabialis

A

A: Dilates nostril, raises superior lip
I: Facial n. (VII)

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5
Q

Orbicularis oculi

A

A: Close palpebral fissure
I: Palpebral n. (branch of VII)

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6
Q

Cricothyroid

A

A: Tense vocal fold
I: Cranial laryngeal n.

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7
Q

Dorsal cricoarytenoid

A

A: Opens glottis
I: Caudal laryngeal n.

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8
Q

Lateral cricoarytenoid

A

A: Closes glottis
I: Caudal laryngeal n.

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9
Q

Thyroarytenoid and Vocalis

A

A: Relax vocal fold
I: Caudal laryngeal n.

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10
Q

Temporalis

A

A: Close jaw
I: Branch of Mandibular n. (Trigeminal V3)

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11
Q

Masseter

A

A: Close jaw
I: Branch of Mandibular n. (Trigeminal V3)

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12
Q

Pterygoid

A

A: Close jaw
I: Branch of Mandibular n. (Trigeminal V3)

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13
Q

Digastricus

A

A: Open jaw
I: Branch of Mandibular n. (Trigeminal V3)

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14
Q

Styloglossus

A

A: Retract and elevate tongue
I: Hypoglossal n. (XII)

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15
Q

Hyoglossus

A

A: Retract and depress tongue
I: Hypoglossal n. (XII)

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16
Q

Genioglossus

A

A: Protrude tongue, retract apex of tongue
I: Hypoglossal n. (XII)

17
Q

Sternohyoid

A

A: Pull tongue and larynx caudally
I: Ventral branches of cervical spinal nerves and Hypoglossal n. (XII)

18
Q

Thyrohyoid

A

A: Pull tongue and larynx caudally
I: Ventral branches of cervical spinal nerves and Hypoglossal n. (XII)

19
Q

Mylohyoid

A

A: Sling that supports tongue
I: Mylohyoid n. (Branch of Trigeminal V3)

20
Q

Geniohyoid

A

A: Draw hyoid apparatus and larynx rostrally
I: Hypoglossal n. (XII)

21
Q

Cricopharyngeus

A

A: Swallowing
I: Pharyngeal branches of Glossopharyngeal n. (IX) and Vagun n. (X)

22
Q

Thyropharyngeus

A

A: Swallowing
I: Pharyngeal branches of Glossopharyngeal n. (IX) and Vagun n. (X)

23
Q

Hyopharyngeus

A

A: Swallowing
I: Pharyngeal branches of Glossopharyngeal n. (IX) and Vagun n. (X)

24
Q

Levator palpebrae

A

A: Elevate superior lid
I: Oculomotor n. (III)

25
Q

Dorsal oblique

A

A: Rotation of eye medially
I: Trochlear n. (IV)

26
Q

Ventral oblique

A

A: Rotation of eye laterally
I: Oculomotor n. (III)

27
Q

Dorsal rectus

A

A: Rotate eye dorsally/upward
I: Oculomotor n. (III)

28
Q

Lateral rectus

A

A: Rotate eye temporally
I: Abducent n. (VI) - LR6

29
Q

Medial rectus

A

A: Rotate eye nasally
I: Oculomotor n. (III)

30
Q

Ventral rectus

A

A: Rotate eye ventrally/downward
I: Oculomotor n. (III)

31
Q

Retractor bulbi

A

A: Pull eye into socket/retract bulb
I: Abducent n. (VI) - RB6

SA Anatomy (6 decks)

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