travers 2

Question 1

physical (direct) interaction

Answer 1

stimulus with membrane protein opens ion channel

somatosensory, vesticular, auditory, taste

Question 2

molecular interaction

Answer 2

stimulus with membrane protein eg g-protein

vision, taste, olfaction

Question 3

direct transduction in taste system

Answer 3

sodium enters thru epithelial sodium channels
action potential lead to calcium entry
release of atp as neurotransmitter

Question 4

molecular g-protein coupled transduction for sweet stimuli

Answer 4

sugars bind to receptor couple to g-protein
release of intracellular ca activates trpm5 channel
depolarization leads to action potentials and release of neurotransmitter atp

Question 5

trp channels

Answer 5

family of ion channels comprised of 6 transmembrane domains with channel btween 5th and 6th
cation ion channel that can pass calcium with a large variety of activating mechanism

Question 6

presynaptic inhibition

Answer 6

hyperpolarized axon terminal leads to less calcium entry and less nt release

Question 7

postsynaptic inhibition

Answer 7

epsp and ipsp interact- spatial and temporal summation