Sensory Systems I - General & Chemical Senses Flashcards
What are receptors?
cells or proteins that recieve information
Nerve endings that are not encapulated are called ____ nerve endings. These receptors are functional for what kind of senses?
- touch
- heat
- cold
- itch
Free nerve endeding are ____ for pain.
nociceptors
Where are the main locations where you can find free nerve endings?
- skin
- mucous membranes
- most organs
Where can you NOT find pain receptors?
in the brain and liver
not done
Which
Which receptor is a naked dendrite that is wrapped around a hair follicle called?
hair receptor
Which receptor is a branching dendrite with dialted tips and is enclosed in a fibrous capsule?
end bulb (Krause end bulb)
Lamellar (Pacinian) Corpuscle
Bulbous (Ruffini) Corpuscle
Meissner’s corpuscle
Pacinian corpuscle
Merkel’s disk
Ruffini endings
Which receptor is encapsulated dendrites embedded between collagenous fascicles of a tendon, near the muscle?
Golgi tendon organ
Which receptor is a fusiform fibrous capsule which contains few noncontractile intrafusal muscle fibers (nuclear chain and nuclear bag types)? It is innervated by annulospiral and flower-spray nerve endings.
muscle spindle
What is gustation and where is it’s main function found?
gustation is taste and it’s main function is found on the tounge
What are spikes without tastebuds; keratinized and tactile only?
fusiform
lingual papillae
`
taste buds
What is olfaction and where is its main function found?
olfaction is smell and it is found in the nose
Why is smell considered a chemical sense?
It depends on chemical signals sent to the brain via receptors
What is the part of the olfactory system which detects the chemical senses?
olfactory bulb
The olfactory system is the only system which does not go go through the ____ in the brain.
hypothalamus
How many chemical oderants can the olfactory system sense?
about 100,000
What is the shortest route to the CNS from the outside of the body?
the olfactory system
Which kind of epithelium lines the olfactory system?
pseudostratified columnar epithelia
