Muscles of the tongue

Question 1

Origin of m. lingualis proprius

Answer 1

Basihyoideum

Question 2

Function of m. lingualis proprius

Answer 2

Changes the shape of the tongue to permit licking, lapping, food prehension, mastication and swallowing.

Question 3

Origin of m. genioglossus

Answer 3

Medial surface of the pars incisiva of the mandible, immediately caudal to the origin of m. geniohyoideus

Question 4

Insertion og m. geniglossus

Answer 4

Basihyoideum and ceratohyoideum

Question 5

Function of m. genioglossus

Answer 5

Caudal fibers draw the tongue rostrally; Rostral fibers depress the tip of the tongue.

Question 6

Origin of m. hyoglossus

Answer 6

Lateral basihyoideum and the thyrohyoideum

Question 7

Insertion of m. hyoglossus

Answer 7

Caudal part of the tongue

Question 8

Function of m. hyoglossus

Answer 8

retracts and depresses the tongue

Question 9

Origin of m. styloglossus

Answer 9

Dorsal end of the stylohyoideum

Question 10

Insertion of m. stylohyoideum

Answer 10

The three heads insert on different levels along the ventro-lateral and ventral surfaces of the tongue.

Question 11

Function of m. stylohyoideus

Answer 11

When the heads function independently, they depress the region of their insertion.

Acting together, they retract the tongue.