Pectoral Girdle - Hyoid

Question 1

What is special about the hyoid bone?

Answer 1

Only bone that is not DIRECTLY articulating with another bone

Question 2

Where is the hyoid located?

Answer 2

Roughly anterior to C4-C5 junction

Question 3

What is the hyoid an attachment site for?

Answer 3

Tongue musculature

Question 4

Describe the landmarks of the hyoid

Answer 4

body

2 pairs of cornua = lesser and greater (which may fuse or be broken)

Question 5

Describe origin and insertion of digastricus

Answer 5

Origins: mastoid notch of temporal bone and digastric fossa of manidble
Insertion: both loop and insert onto anterior inferior body of the hyoid

Question 6

Describe the movement of digastricus

Answer 6

Jaw movement

Question 7

Describe the origin and insertion of stylohyoid

Answer 7

Origin: styloid process of temporal bone
Insertion: anterior inferior body of hyoid

Question 8

Decribe the movement of stylohyoid

Answer 8

Tongue elevation

Question 9

Describe the origin and insertion of mylohyoid

Answer 9

Origin: mylohyoid line of mandible
Insertion: anteiror inferior body of hyoid

Question 10

Describe the movements of mylohyoid

Answer 10

Raises floor of mouth and tongue