WEEK 8 Flashcards
1
Q
Lips
A
- orbiculairis oris m.
- innervated by branches of facial nerve CN VII
- blood supply by branches of facial artery
2
Q
Teeth
A
- made of dentin converted in enamel (harvests vubstance in body)
- located in maxilla & mandible
- infant: 20 deciduous teeth
- adult: 32 permanent teeth
- incisors, canine, premolars, molars
3
Q
Tongue
A
- separated into two sections (epithelia come from different parts of embryo, have different texture, have different innervation)
- anterior: oral ectoderm, smoother, taste by fascial nerve CN VII
- posterior: foregut endoderm, lumpier, taste by glossopharyngeal nerve CN IX
- general sensation for all of tongue is by lingual branch of trigeminal nerve CN V
- functions: taste, mastication, speech, swallowing
4
Q
Muscles of the tongue
A
- intrinsic and extrinsic muscle
- skeletal muscle innervated by hypoglossal nerve CN XII
- genioglossus is the largest muscle of the tongue
