neurons (schmidt)

Question 1

efferent neurons

Answer 1

spin web, dendrites

Question 2

schwann cells

Answer 2

make impulses go faster through the neuron

Question 3

voltage gated ion channels

Answer 3

selective for Ca, K, Na. In heart muscle cells and smooth muscle cells in blood vessels

Question 4

stimulus

Answer 4

small stimulus releases a small amount of neurotransmitter and vice versa

Question 5

Na/K ATPase

Answer 5

generates ATP, transports sodium and potassium, causing the potassium concentration to go down and sodium up

Question 6

potassium

Answer 6

increased concentration will lead to depolarization of neurons

Question 7

depolarization

Answer 7

membrane potential negative to positive, opening of Na channels, closing of K channels

Question 8

hyperpolarization

Answer 8

membrane potential becomes more negative, opening of K channels

Question 9

hyperkalemia

Answer 9

increased potassium levels, bringing the baseline closer to the threshold so a less strong stimulus is needed

Question 10

how can cellular calcium be increased

Answer 10

activation of PLC and opening of voltage gated calcium channels