Head and Neck Muscles

Question 1

Platysma

Answer 1

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

Question 2

Orbicularis oris

Answer 2

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

Question 3

Buccinator

Answer 3

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

Question 4

Levator nasolabialis

Answer 4

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

Question 5

Orbicularis oculi

Answer 5

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

Question 6

Cricothyroid

Answer 6

A: Tense vocal fold
I: Cranial laryngeal n.

Question 7

Dorsal cricoarytenoid

Answer 7

A: Opens glottis
I: Caudal laryngeal n.

Question 8

Lateral cricoarytenoid

Answer 8

A: Closes glottis
I: Caudal laryngeal n.

Question 9

Thyroarytenoid and Vocalis

Answer 9

A: Relax vocal fold
I: Caudal laryngeal n.

Question 10

Temporalis

Answer 10

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

Question 11

Masseter

Answer 11

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

Question 12

Pterygoid

Answer 12

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

Question 13

Digastricus

Answer 13

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

Question 14

Styloglossus

Answer 14

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

Question 15

Hyoglossus

Answer 15

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

Question 16

Genioglossus

Answer 16

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

Question 17

Sternohyoid

Answer 17

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

Question 18

Thyrohyoid

Answer 18

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

Question 19

Mylohyoid

Answer 19

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

Question 20

Geniohyoid

Answer 20

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

Question 21

Cricopharyngeus

Answer 21

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

Question 22

Thyropharyngeus

Answer 22

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

Question 23

Hyopharyngeus

Answer 23

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

Question 24

Levator palpebrae

Answer 24

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

Question 25

Dorsal oblique

Answer 25

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

Question 26

Ventral oblique

Answer 26

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

Question 27

Dorsal rectus

Answer 27

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

Question 28

Lateral rectus

Answer 28

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

Question 29

Medial rectus

Answer 29

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

Question 30

Ventral rectus

Answer 30

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

Question 31

Retractor bulbi

Answer 31

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