Muscles Of The Tounge

Question 1

What is the function of the extrinsic muscles of the tongue

Answer 1

Controls movement of tongue around oral cavity

Question 2

What is the function of the intrinsic muscles of the tongue

Answer 2

Changes the shape of the tongue

Question 3

What are the 4 (paired) extrinsic muscles of the tongue & where do they each attach

Answer 3

Palatoglossus (palatine aponeurosis)
Styloglossus (styloid process of temporal bone)
Genioglossus (mandible)
Hyoglossus (hyoid)

Question 4

What nerve innervates the extrinsic muscles of the tongue

Answer 4

All = CN XII, except palatoglossus = CN X

Question 5

Where are intrinsic muscles of the tongue mainly found

Answer 5

posterior aspect of the tongue

Question 6

What are the four (paired) intrinsic muscles of the tongue & what are they named after

Answer 6

• superior longitudinal,
• inferior longitudinal,
• transverse,
• vertical muscles

They are named by the direction in which they travel

Question 7

What nerve innervates the intrinsic muscles of the tongue

Answer 7

hypoglossal nerve (CN XII)