exam 4 muscles and bones Flashcards
(109 cards)
skeletal structure of pharyngeal oral apparatus
skull
maxilla
mandible
frontal bone
zygomatic
sphenoid
temporal
parietal
styloid process
alveolar process
bone that holds teeth
left and right halves of the mandible join at the line of union
fibrous symphysis
which of the 2 processes is closest to the teeth
coronoid process
sphenomandibular ligament function
limits down and back movement of the mandible
temporomandibular ligament function
limits down and back movement of the condyle
stylomandibular ligament function
limits down and forward movement of the mandible
what is the top of the oral cavity bounded by
hard palate and velum
what is the bottom of the oral cavity bounded by
floor of the mouth and tongue
what is the back of the oral cavity bounded by
anterior faucial pillars
5 subdivisions of the tongue (teeth side to throat side)
tip, blade, dorsum, root, body
where is the buccal cavity
space between teeth and cheeks
what lines most of the mouth to keep it moist
shiny squamous epithelium
what lines the gums and hard palate
masticatory mucosa
passive force
natural recoil of structures
active force
muscle contraction
intrinsic muscle ends
both ends are attached with in the oral pharyngeal structure
extrinsic muscle ends
one end is attached with in the oral pharyngeal structure and the other end is attached outside the oral pharyngeal structure
types of muscle contractions
concentric, eccentric, and isomettric
concentric muscle contraction
muscle shortens as it contracts
eccentric muscle contraction
muscle lengthens as it contacts
isometric muscle contractions
muscle generates force with out changing length
what are the muscles of the lower jaw
masseter
temporalis
internal pterygoid
external pterygoid
digastric
mylohyiod
geniohyoid
masseter
helps with chewing, and helps close mouth