Flashcards in anatomy Deck (94)
which muscles are used to close the jaw?
- medial pterygoid
what muscle is used to open the jaw?
- lateral pterygoid
where is the temporalis found?
- coronoid process of mandible to temporal fossa
where is the masseter found?
- angle of mandible to zygomatic arch
where is the lateral pterygoid found?
- condyle of mandible to pterygoid plates of sphenoid bone
where is the medial pterygoid found?
- angle of mandible (medial side) to pterygoid plates of sphenoid bone
what is the only nerve that comes off of the pons?
the trigeminal nerve - sensory and motor fibres
what is the course of the trigeminal nerve?
- from pons
- through foramen ovale
- to muscle of mastication and sensory area
what is the posterior 1/3 of the tongue nerve supplied by?
- CN9 (IX)
- taste and general sensation
what is the anterior 2/3rd of the tongue supplied by?
- CN 5 - CNV3 and CNVII
what is the course of the facial nerve and what does it supply?
- from pontomedullary junction
- travel through temporal bone via internal acoustic meatus then stylomastoid foramen
- to supply
- taste anterioe 2/3rds of tongue
- muscles of facial expression
- glands in floor of mouth (salivaiton)
what nerve supplys taste and parasympa?
- CN VIII = chorda tympani
- it connects to the lingual nerve ( CN C3)
what supplies the inferior hals of the oral cavity?
what supplied the superior half of the oral cavity and palate?
- CN V2
what is the sensory part of the gag refex carried by?
- nerve fibres in CN IX
what is the motor part of the gag reflex carried by?
- nerve fibres in CN IX and CN X
what does spraying a local anaesthetic block?
- sensory action potentials in CN V2, CN V3, CN VII, CN IX
what is the course of CN V2
- from pons
- through foramen rotundum
- to sensory area (mid face)
what is the course of CN IX?
- from medulla
- through jugular foramen
- to the posterior wall of oropharync (sensory), paroti gland (secretomotor), and post 1/3rd of the tongue (sensation and taste)
where does the parotid glad secrete from?
- upper 2nd molar
where does the submandibular gland secrete via?
- lingual caruncle
where does the sublingual . gland secrete via?
- several ducts superiorly
what nerve supplied the parotid?
- CN IX
what nevre supplies the submandibular?
what nerve supplies the sublingual?
what do extrinsic muscles do to the tongue?
- chnage the position of the tongue during mastication, swallowing and speech
what do the skeletal intrinsic muscle do to the tongue?
- modify the shape of the tongue during function
what is the course of the hypoglossal nerves (CN XII)
- from medulla
- through hypoglossal canal
- to extrinsic and intrinsic muslce of tongue (expect palatoglossus)
what are the circular (constrictor) muscles of the pharynx innervated by?
- CN X (vagus)