Tongue: extrinsic muscles

Question 1

What are the extrinsic mucles of the tongue?

Answer 1

1) Geinioglossus
2) Hyoglossus
3) Styloglossus
4) Palatoglossus

Question 2

T/F: ALL of the extrisic tougne muscles are innervated by the hypoglossal nerve (CN XII)

Answer 2

False: Palatoglossus is not

Question 3

What is the nerve innervation of the Palatoglossus?

Answer 3

Vagus Nerve (CN X) via the pharyngeal plexus

Question 4

What is the function of Palatoglossus?

Answer 4

Elevates the back of the tonuge

Question 5

What is the function of the genioglossus cliniclly?

Answer 5

1) Pulls the tongue forward

2) Prevents of the tongue from falling backwards, blocking the airway, potentially leading to suffication

Question 6

The actions of geniolgossus are important in what clinical scenarios?

Answer 6

1) When the patient is under general anesthesia

2) In seizure disorders