Muscles and their doings

Question 1

Mylohyoid M

Answer 1

suprahyoid
elevates hyoid B, elevates floor of mouth and tongue
N. to mylohyoid

Question 2

Geniohyoid M

Answer 2

elevates hyoid, shortens floor of mouth
widens pharynx
C1 via hypoglossal N

Question 3

Digastric M

Answer 3

Elevates hyoid
steadies hyoid
depresses the mandible

Anterior B: N. to mylohyoid
Posterior B: facial VII

Question 4

Stylohyoid M

Answer 4

Stylohyoid M

elevates hyoid B
retracts hyoid B
elongates floor of mouth

facial N