L02 Neurophysiology I: Neurons and Resting Membrane Potentials

Question 1

what functions do multipolar neurons have?

Answer 1

motor neurons, interneuron;

most common

Question 2

what functions do bipolar neurons serve?

Answer 2

“special senses”;

bipolar cell of the retina, ganglia of vestibulocochlear nerve, etc

Question 3

what functions do (pseudo)unipolar neurons serve?

Answer 3

somatic and visceral sensory neurons

recall dorsal root ganglia sensory

Question 4

recall receptor potentials vs. synaptic potentials

Answer 4

receptor potentials are generated by sensory neurons responding to stimulus.

Question 5

what are branches at the terminus of an axon called?

Answer 5

axon collaterals

Question 6

transport of macromolecules from hillock to terminus is done by which protein?

Answer 6

kinesin

Question 7

transport of macromolecules from terminus to hillock is done by which protein?

Answer 7

dynein

Question 8

how quickly does “fast anterograde transport” go? “slow anterograde transport”?

Answer 8

fast: 400mm/day.
slow: 5mm/day.

Question 9

what is the diffusion of cytosolic and cytoskeletal proteins called?

Answer 9

axoplasmic flow

Question 10

what macromolecules are transported in retrograde transport?

Answer 10

endosomes, mitochondria, membrane lipid, endocytosed NGF, viruses, etc.