The tongue Flashcards
what does the tongue do
mastication
deglutition
speech
taste.
what is the anterior 2/3 called
the body or oral part
what is the anterior 2/3 covered in
- covered by mucosa which is derived from the ectoderm
what is the posterior 1/3 called
the root or pharyngeal part
what is the posterior 1/3 covered in
- covered in mucosa derived from the endoderm
what forms the boundaries between 2/3 and 1/3
Sulcus Terminalis forms the boundary between the 2 parts
what is posterior to the sulcus terminalis
- foramen cecum
what different directions is the do the muscles go in
Superior Longitudinal, Inferior Longitudinal, Vertical and Transverse
what do muscles going in different directions do to the tongue
- these muscles help change the shape of the tongue and allow them to move in different directions
How many muscles are in the extrinsic muscles
group of 4 muscles
what do the extrinsic muscles do
- they attach the tongue to the bony structures around it and move the tongue during swallowing or stick it out
what does the styloglossus do
Styloglossus muscle to the styloid process,
what do the genioglossus do
Genioglossus muscle to the mandible
what do the hypoglossus do
Hyoglossus to the hyoid bone
what do the palatoglossus do
Palatoglossus to the palate their function is to move the tongue during swallowing or stick it out
