what muscles make up the floor of the mouth?
geniohyoid
mylohyoid
what does contraction of mylohyoid do?
elevates floor of mouth and hyoid
what does contraction of geniohyoid do?
contraction elevates the floor of the mouth
which tonsils are most commonly inflammed?
palatine tonsils
how many extrinsics muscles are there at the tongue?
4
what does extrinsic muscles of tongue do?
move the position of tongue
what are the 4 extrinsic muscles?
- palatoglossus
- styloglossus
- hyoglossus
- genioglossus
what does intrinsic muscle of tongue do?
change shape of tongue
which cranial nerve innervates genioglossus?
CN XII
what does the genioglossus do?
- depress and protrudes tongue
- help with speech of thhh, lahhh
what does hyoglossus do?
- depress and retracts the tongue
what is the space between mylohyoid and hyoglossus for?
- lingual vein, artery, nerve
- submandibular gland
- sublingual gland
what does styloglossus do?
- pulls tongue backwards
which nerve innervates the palatoglossus?
vagus nerve (X)
what does palatoglossus do?
- elevates back of tongue
- depress soft palate
what is the overlying mucosal fold of the palatoglossus muscle?
palatoglossal arch
what does the tongue sticking out in the midline mean?
the hypoglossus nerve is working
if the tongue deviates to the right side which nerve has problem? and which side?
right side, hypoglossus nerve
what nerve supplies sensory to anterior 2/3 of the tongue?
facial nerve by chorda tympani
what nerve supplies sensory to posterior 1/3 of the tongue?
glossopharyngeal nerve
