3. Resting Membrane Potential

Question 0

What is the normal resting membrane potential for nerve cells?

Answer 0

-75mV

Question 1

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

Answer 1

-90mV

Question 2

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

Answer 2

Hyperpolarisation

Question 3

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

Answer 3

Depolarisation.

Question 4

What are the three types of gating?

Answer 4

Voltage
Ligand
Mechanical

Question 5

Give two examples of excitatory transmitters

Answer 5

Acetyl Choline

Glutamate

Question 6

Give two examples of inhibitory transmitters

Answer 6

Glycine

GABA

Question 7

Slow synaptic transmission uses what type of receptor?

Answer 7

GPCR

Question 8

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

Answer 8

Na+K+ATPase

Question 9

What sets up the resting membrane potential?

Answer 9

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