TOUCH, PAIN ,TASTE AND SMELL Flashcards
list the 5 specialised receptors in skin
merkel disc
meissner corpuscle
ruffini corpuscle
pacinican corpuscle
free nerve ending
what are signals from the skin conveyed by
- mechanoreceptors
- ## thermoreceptorsnocicoceptors
taste buds epithelium
stratified epitheliumw
how many taste buds on lateral surface of each vallate (circumvallate)
250 ~
how does sensory process start with smell
with interaction of odorant molecules with olfactory receptors locatted on the cilia of olfactory sensory neurons
outer ear consists of
auricle and external auditory meatus
middle ear consists of
tympanic membrane and auditory ossicles
inner ear consists of
cochlea
semicircular canals (3)
vestibulocochlear nerves
what is the inner ear responsible for
using mechanoreceptors to detect stimuli for hearing in cochlea and equilinriom in semicircular canals and send nerve impulses to brain via VESTI/
what does the auditory ossicles contain
malleus (hamer)
incus
stapes
what is the malleus attached to
tympanic membrane
what is stapes attached to
cochlea
what does the. midd;e ear also contain
eustachian tube auditory tube - connects with pharynx for equalising air pressure in the skull (blocked ear feeling)
what happens when sound hitting onto tympanic membrane cause
auditory ossicles to vibrate > amplification of sound waves
what. happens when ossicles vibrate
- waves int he endolymph fluid inside the cochlea are generated