Week 4 - Nervous System Flashcards
(10 cards)
1
Q
repolarization
A
K is allowed to diffuse out
then Na + K go back to original place w/ help of pump
2
Q
depolarization
A
when stimulus activates receptors of neuron and Na is allowed to flood into cell and charge in the neuron to activate it. (think of someone stepping on ur foot)
3
Q
Na/K pump
A
pumps against concentration gradient
4
Q
hypokalemia
A
low K+ in the blood
5
Q
resting neurons
A
always ready to be activated by stimuli but hasn’t yet
6
Q
does fat conduct electricity
A
no
7
Q
does water conduct electricity
A
yes
8
Q
nodes of ranvier
A
space between myelin sheaths
9
Q
Myelin Sheath function
A
increases speed of electrical signal
10
Q
A
