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Flashcards in Q4 Deck (10):
1

Which channels underlie the regenerative rising phase of some action potentials?

Calcium channels

2

Why is the driving force of Ca so high?

Because there is a very low concentration within the cell.

3

T/F: Calcium entry during action potentials is used to trigger or regulate various cell functions.

True

4

What is one of the two basic types of cardiac action potential?

Pacemaker or muscle fibers of the ventricle

5

What does NMJ stand for?

Neuro-muscular junction

6

T/F: ACh-gated receptors are only permeable to Na channels.

False

7

Inhibitory postsynaptic potentials (IPSPs) in the CNS are primarily due to which neurotransmitter?

GABA

8

T/F: IPSPs "clamp" a cell's membrane potential at a value below threshold making it less excitable.

True

9

Inhibitory neurotransmitters cause a conductance increase in which two ions?

K and Cl

10

What is the term for releasing a neuron form inhibition?

Disinhibition