Anatomy 101 Neck Muscles functions

Question 1

digastric action

Answer 1

depresses mandible
fixator of hyoid bone during swallowing

Question 2

mylohyoid action

Answer 2

elevates hyoid bone and floor of mouth, assisting tongue to push food toward pharynx

Question 3

sternohyoid action

Answer 3

depresses hyoid bone and larynx

Question 4

sternocleidomastoid action

Answer 4

flexes head (chin towards chest)
flex and rotate head toward opposite side
accessory muscle of respiration

Question 5

Scalenes (anterior, middle, posterior) actions

Answer 5

flexes head (first rib fixed)
elevate rib cage with vertebral column during forced inspiration (neck fixed)
moves head laterally
accessory muscle of respiration