Excitatory and Inhibitory Neurotransmission in the CNS

Question 1

When sodium channels open in a neurone does sodium flow inwards or outwards?

Answer 1

Inwards

Question 2

When calcium channels open in a neurone does calcium flow inwards or outwards?

Answer 2

Inwards

Question 3

When chlorine channels open in a neurone does chlorine flow inwards or outwards?

Answer 3

Inwards

Question 4

When pottassium channels open does pottassium flow inwards or outwards?

Answer 4

Outwards

Question 5

Does the inward flow of sodium cause hyperpolarization or depolarization?

Answer 5

Depolarization

Question 6

Does the inward flow of calcium cause hyperpolarization or depolarization?

Answer 6

Depolarization

Question 7

Does the inward flow of chlorine cause hyperpolarization or depolarization?

Answer 7

Hyperpolarization

Question 8

Does the inward flow of pottassium cause hyperpolarization or depolarization?

Answer 8

Hyperpolarization

Question 9

What kind of drug is lidnocaine?

Answer 9

Na channel antagonist

Question 10

What is an ionotropic receptor?

Answer 10

The receptor is an integral component of the molecule that forms the channel it controls.

Question 11

What is a metabotropic receptor?

Answer 11

Receptor and the channel it controls are distinct. Indirect gating