Muscles (Action and Innervation)

Question 1

Platysma

Answer 1

A - facial twitch, expression

I - Facial nerve VII

Question 2

Orbicularis Oris

Answer 2

A - Move lips

I - Facial nerve VII

Question 3

Buccinator

Answer 3

A - Return food from vestibular region to teeth

I - Facial Nerve VII

Question 4

Levator Nasolabialis

Answer 4

A - Dilates nostril, raises superior lip

I - Facial nerve VII

Question 5

Orbicularis Oculi

Answer 5

A - Close palpebral fissure (blink)

I - Facial Nerve VII

Question 6

Cricothyroid

Answer 6

A - Tenses focal fold by drawing together ventral parts of cricoid and thyroid cartilages
I - Cranial Laryngeal Nerve

Question 7

Dorsal Cricoarytenoid

Answer 7

A - open the glottis

I - caudal laryngeal nerve

Question 8

Lateral Cricoarytenoid

Answer 8

A - close the glottis

I - caudal laryngeal nerve

Question 9

Thyroarytenoid

Answer 9

A - relax the vocal fold, constrict the glottis

I - caudal laryngeal nerve

Question 10

Vocalis

Answer 10

A - Shortens and relaxes vocal cords

I - Caudal laryngeal nerve

Question 11

Temporalis

Answer 11

A - close the jaws

I - Mandibular branch of the Trigeminal nerve V3

Question 12

Masseter

Answer 12

A - Close the jaws

I - Mandibular branch of Trigeminal nerve V3

Question 13

Pterygoid

Answer 13

A - Close the jaws

I - Mandibular branch of Trigeminal nerve V3

Question 14

Digastricus

Answer 14

A - Open the jaws

I - Mandibular branch of Trigeminal nerve V3

Question 15

Styloglossus

Answer 15

A - Retracts and elevates tongue

I - Hypoglossal nerve XII

Question 16

Hyoglossus

Answer 16

A - Retracts and depresses tongue

I - Hypoglossal nerve XII

Question 17

Genioglossus

Answer 17

A - Protrude tongue, retract apex

I - Hypoglossal nerve XII

Question 18

Sternohyoid

Answer 18

A - Swallowing

I - Hypoglossal nerve XII

Question 19

Thyrohyoid

Answer 19

A - Swallowing

I - Hypoglossal nerve XII

Question 20

Mylohyoid

Answer 20

A - Aids in support of tongue

I - Mandibular branch of Trigeminal nerve V3

Question 21

Geniohyoid

Answer 21

A - Draw hyoid and larynx rostrally

I - Hypoglossal nerve XII

Question 22

Cricopharyngeus

Answer 22

A - Swallowing

I - Glossopharyngeal nerve IX

Question 23

Thyropharyngeus

Answer 23

A - Swallowing

I - Glossopharyngeal IX

Question 24

Hyopharyngeus

Answer 24

A - Swallowing

I - Glossopharyngeal nerve IX

Question 25

Levator Palpebrae

Answer 25

A - Lift superior palpebrae | I - Oculomotor nerve III

Question 26

Dorsal Oblique

Answer 26

A - Rotate eye medially | I - Trochlear nerve IV

Question 27

Ventral Oblique

Answer 27

A - Rotate eye laterally | I - Oculomotor nerve III

Question 28

Dorsal Rectus

Answer 28

A - Rotate eye dorsally | I - Oculomotor nerve III

Question 29

Lateral Rectus

Answer 29

A - Rotate eye laterally | I - Adducent nerve VI

Question 30

Medial Rectus

Answer 30

A - Rotate eye medially | I - Oculomotor nerve III

Question 31

Ventral Rectus

Answer 31

A - Rotate eye ventrally | I - Oculomotor nerve III

Question 32

Retractor Bulbi

Answer 32

A - Pull eye caudally | I - Abducent nerve VI