Neural networks 11

Question 1

Why can action potential travel in one direction?

Answer 1

the sodium channels have a refractory period following activation, during which they cannot open again.

Question 2

What drugs block the sodium channels?

Answer 2

TTX (puffer fish) blocks Na channel — can be lethal,
many other Na channel blockers exist in nature
Local anaesthetics — bind Na channels and block conduction
antiarrhythmics (e.g., lidocaine, mexiletine)
anticonvulsants (e.g., carbamazepine)
antidepressants (e.g., amitriptyline)

Question 3

What is Saltatory conduction?

Answer 3

the way an electrical impulse skips from node to node down the full length of an axon

Question 4

What is Guillain Barre syndrome?

Answer 4

Demyelination disease

Question 5

What is multiple sclerosis?

Answer 5

Demyelination disease

Question 6

What are some demyelination disease?

Answer 6

Guillain Barre syndrome
multiple sclerosis
Osmotic demyelination syndrome

Question 7

What is Osmotic demyelination syndrome a consequence of?

Answer 7

treating Hyponatremia