Neurophys: Synapse

Question 1

Where does information transfer from on a neuron?

Answer 1

Dendrite, cell body, muscle, gland

Question 2

Pre or post?
Neurotransmitter is released from a nerves axon terminal (sending the message)

Answer 2

Pre-synaptic neuron

Question 3

Pre or post?
The dendrite of the next neuron has receptors that are stimulated by the neurotransmitter

Answer 3

Post-synaptic

Question 4

Where is does the AP start in ?

Answer 4

Dendrite
(If all goes well)

Question 5

Step one

Answer 5

AP arrives Ca+ channels open due to depolarization

Question 6

Step two

Answer 6

Vesicle fuses and migrate with pre-synaptic membrane

Question 7

Step Three

Answer 7

Neurotransmitter is released into synaptic cleft and binds on the post-synaptic membrane

Question 8

Step four

Answer 8

Chemically/ligand gated ion channels open generating a graded potential —> when there’s change from rest, goes into AP

Question 9

Step five

Answer 9

Graded potential reaches the axon hillock

Question 10

Step six

Answer 10

After being broken down and released an AP with voltage gated channels is triggered

Question 11

Chemically gated (ligand-gated)

Answer 11

Open with binding of a specific neurotransmitter