The tongue Flashcards
What are the functions of the tongue
- Chewing up food
- Swallowing
- Taste
- Facilitates speech
What divides the anterior and posterior sections of the tongue
The sulcus terminalis
What innervates the anterior 2/3rd and the posterior 1/3rd of the tongue for special sensory information
Anterior:
-chorda timpani which is a branch of the facial nerve
Posterior:
-The glossophatamgeal nerve
What innervates the anterior and posterior parts of the tongue for general sensory innervation
anterior: v3
posterior: the glossopharnageal nerve
What are the rough prominences on the tongue called?
Pupillae
Different pupillae and where they are round
- Fungiform : At front
- Filliform: Around the midline
- Circumvallate (also known as vallate)- found on sulcus terminalis
- Folliate( on side)
Which are the only pupillae which do not have taste buds?
The filiform pupillae
What kind of membrane is found on the inferior portion of the tongue?
smooth mucous membrane
What attaches the tongue to the floor of the palate?
The frenulum
Intrinsic muscles of the
Tongue- where they originate/ innervate and function.
Where are there fibres situated mainly?
- originate and innervate the tongue
- Fibres mainly present on the dorsum of the tongue
- Resposible for changing the shape of the tongue
Which are the extrinsic muscles of the tongue and what do they do?
Change the position of the tongue
- Genioglossus
- Hyoglossus
- Styloglossus
- Palatoglossus
where do the extrinsic muscles attach?
To the bones and muscles
Which muscles depress the tongue
- Genioglossus
- Hyoglossus
which muscles retract the tongue
Hyoglossus
styloglossus
which muscles elevate the tongue
palatoglossus and the styloglossus
