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Sensory C
n/a
17
Biology
Undergraduate 2
04/09/2014

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Cards

Term
how do snakes smell and taste?
Definition
tongue does both
collects airborne molecules on tongue and fits them into Jacobson's organ (groove on roof of mouth)
Term
what is the olfactory sensory structure of the snake?
Definition
Jacobson's organ
Term
what are the holes on snake's nose for?
Definition
thermoreception - senses where heat is
Term
what do insects hear? what are they listening for? where is it located in the grasshopper?
Definition
have Tympanic membrane - thin membrane that picks up vibrations
listening for other insects
under wing
Term
how do insects make noise?
Definition
rub wings together
legs are rubbed together for mating purposes
Term
what group of vertebrates has the best audition? which animal specifically?
Definition
mammals
bats
Term
how many cycles a second do humans hear? dogs? bats?
Definition
16,000-20,000 cycles/sec
30,000
100,000
Term
what do bats use their good hearing for?
Definition
use echolocation to navigate
emit high frequency sounds and receive echo back
Term
what are the 3 parts of the mammalian ear?
Definition
outer ear
inner ear
middle ear
Term
what is in the mammalian outer ear?
Definition
filled with air up to the tympanum
Term
what is in the mammalian middle ear?
Definition
3 bones:
malleus
incus
stapes
Term
what is in the mammalian inner ear? how does it work?
Definition
filled with fluid
rows of hairs extend into the fluid
hairs attached to neurons and goes to the auditory center of the cerebrum
does the conversion of sound waves to the nerve impulse
Term
how do mammals hear at different pitches?
Definition
sound waves cause fluid to move
different frequencies stimulate different hairs
Term
what animal has the best sense of taste? where do they taste? how do they eat?
Definition
dung fly
feet
feeding tube called the proboscis
Term
how do vertebrates taste?
Definition
tastebuds
Term
what are the 4 "classic" tastes and what is the new one?
Definition
sweet, sour, salty, bitter
umami - savory/meaty taste
Term
what is the relative accuracy of the vertebrate sense of taste?
Definition
net very acute - olfaction is much better
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