Focus 3

Question 1

Another action potential could be triggered with greater trigger event. Needs stronger than normal stimulus

Answer 1

Relative refractory period

Question 2

Period in which another action potential cannot be triggered. Ensures forward flow

Answer 2

Absolute refractory period

Question 3

Neurotransmitters taken back into axon terminal

Answer 3

Reuptake

Question 4

Stimuli from one pre-synaptic axon…time

Answer 4

Temporal summation

Question 5

Stimuli from multiple pre-synaptic axons…spatial

Answer 5

Spatial summation

Question 6

ACh opens channel. Both Na and K move. Depolarization EPSP

Answer 6

Nicotinic receptor

Question 7

ACh opens separate ion channel “indirect” hyperpolarization IPSP

Answer 7

Muscarinic receptor

Question 8

Always open. On cell body/ throughout cell

Answer 8

Leaky K channels

Question 9

Threshold is reached Na opens. Membrane potential change. On axon hillock

Answer 9

Voltage gated Na and K

Question 10

Activated by action potential reaching axon terminal. Membrane potential change.

Answer 10

Voltage gated Ca

Question 11

ACh chemicals/neurotransmitters activate. On dendrites

Answer 11

Chemically gated receptors Na K Cl-

Question 12

ATP activates. On cell membrane. Always working

Answer 12

Na/K pump