Introduction to Nerve Conduction

Question 1

What is the function of dendrites?

Answer 1

receive inputs from other neurones + convey graded electrical signals to stoma

Question 2

what is the axon hillock?

Answer 2

site of invitation of ‘all or nothing’ law

Question 3

what is the major excitatory neurotransmitter?

Answer 3

glutamate

Question 4

what is the name of the receptor that glutamate acts upon?

Answer 4

NDMA/Non-NDMA

Question 5

What results in glutamate binding onto non-NMDA receptor sites?

Answer 5

bines agonists which controls Na+/K+ synapses –> mediates fast excitatory

Question 6

What results in glutamate binding onto NMDA receptor sites?

Answer 6

promotes neurotoxicity –> slow component e.g. ketamine

Question 7

What is the name of the neurotransmitter that is released in small packages?

Answer 7

QUANTA

Question 8

What is the main inhibitory neutrotransmitter?

Answer 8

GABA

Question 9

What are the 2 potential receptors that GABA could bind to?

Answer 9

ionatropic GABAa

metabotropic GABAb

Question 10

What does GABAa control?

Answer 10

Cl-

Question 11

What does GABAb control?

Answer 11

K+

Question 12

What does EPSP mean?

Answer 12

Excitatory post-synaptic potential

Question 13

What does IPSP?

Answer 13

Inhibitory post synaptic potential

Question 14

Give an example of a drug which binds onto GABAa?

Answer 14

Benzodiazepines

Question 15

Give an example of a drug which binds onto GABAb?

Answer 15

Baclofen

Question 16

What are the 3 pathways of the trigeminal nerve projected by?

Answer 16

ventro-posteromedial nucleus to thalamus

Question 17

What is neglect syndrome?

Answer 17

damage to RIGHT parietal cortex –> patients believe their left side does not exist

Question 18

Where is the post central gyrus located?

Answer 18

Parietal lobe