3. Resting Membrane Potential Flashcards Preview

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Flashcards in 3. Resting Membrane Potential Deck (10)
0

What is the normal resting membrane potential for cardiac/skeletal muscle cells?

-90mV

1

What is the normal resting membrane potential for nerve cells?

-75mV

2

Opening K+ or Cl- channels does what to the cell membrane potential?

Hyperpolarisation

3

Opening Na+ or Ca2+ channels causes what to the cell membrane potential?

Depolarisation.

4

What are the three types of gating?

Voltage
Ligand
Mechanical

5

Give two examples of excitatory transmitters

Acetyl Choline
Glutamate

6

Give two examples of inhibitory transmitters

Glycine
GABA

7

Slow synaptic transmission uses what type of receptor?

GPCR

8

Which protein is responsible for setting up and maintaining the ionic gradients needed to establish a membrane potential?

Na+K+ATPase

9

What sets up the resting membrane potential?

Mainly the outwards diffusion of K+ but fluttering and leaking of Na+, Cl- and Ca2+ can contribute