Muscles of the Hyoid

Question 1

What do all hyoid muscles assist?

Answer 1

hyoid muscles assist muscles of mastication and swallowing

Question 2

Where are all hyoid muscles attached?

Answer 2

all attached to the hyoid bone (suspended inferior to the mandible)

Question 3

2 groups of hyoid muscles?

Answer 3

1. Suprahyoid group

2. Infrahyoid group

Question 4

Suprahyoid group/innervation

Answer 4

1. Digastric: V3 and VII (7)
2. Mylohyoid: V3 (makes up floor of mouth)
3. Geniohyoid: C1 by way of XII (11)
4. Stylohyoid: VII (7)
   DEPRESSION OF MANDIBLE
   ACTION: SWALLOWING

Question 5

Infrahyoid group/innervation

Answer 5

1. Sternothyroid: C1-C3
2. Sternohyoid: C1-C3
3. Omohyoid: C1-C3
4. Thyrohyoid: C1-C3
   STABILIZE HYOID BONE
   ACTION: SWALLOWING & SPEECH