Muscles of Anterior Cervical Region

Question 1

Geniohyoid

Answer 1

A: pulls hyoid anterosuperiorly, shortens mouth floor, widens pharynx
I: C1 via hypoglossal nerve

Question 2

Stylohyoid

Answer 2

A: elevates and retracts hyoid (elongates floor of mouth)
I: stylohyoid branch of CN VII

Question 3

Digastric

Answer 3

A: works with infrahyoids to depress mandible against resistance, elevates and steadies hyoid during swallowing and speaking
I: anterior belly: CN V3 via nerve to mylohyoid
posterior belly: CN VII (preparotid branch)

Question 4

Sternohyoid

Answer 4

A: depresses hyoid after elevation during swallowing
I: C1-C3 via ansa cervicalis

Question 5

Omohyoid

Answer 5

A: depresses, retracts, steadies hyoid
I: C1-C3 via ansa cervicalis

Question 6

Sternothyroid

Answer 6

A: depresses hyoid and larynx
I: C2-C3 via ansa cervicalis

Question 7

Thyrohyoid

Answer 7

A: depresses hyoid and elevates larynx
I: C1 via hypoglossal nerve

Question 8

Mylohyoid

Answer 8

A: elevates hyoid, floor of mouth and tongue during speaking and swallowing
I: V3 (nerve to mylohyoid)