Synaptic transmission

Question 1

What are electrical synapses also known as?

Answer 1

Gap junctions

Question 2

What protein is used to make gap junctions?

Answer 2

Connexin

Question 3

What are ionotropic neurotransmitter receptors?

Answer 3

Directly linked to ion channels (ligand gated)

Question 4

What are metabotropic neurotransmitter receptors?

Answer 4

G-coupled receptors

Question 5

Are meoabotrobic or ionotropic neurotransmitter receptors faster?

Answer 5

Ionotropic

Question 6

What are the active zones?

Answer 6

Areas on presynaptic membrane in which vesicles are released

Question 7

What do active zones correspond to?

Answer 7

Receptors on post-synaptic membrane

Question 8

What do SNARE proteins allow?

Answer 8

Vesicle fusion with terminal membrane

Question 9

What are V-SNARE proteins?

Answer 9

Vesicle membrane proteins

Question 10

What are T-SNARE proteins?

Answer 10

Target membrane proteins

Question 11

How is the fused vesicle cut off from the membrane?

Answer 11

Coated in clathrin and cut off by dyamin

Question 12

What is temporal summation?

Answer 12

Adding together of EPSPs generated by firing from he same terminal at high frequency

Question 13

What is spatial summation?

Answer 13

Adding together of EPSPs generated by firing of 2 more more neurones simultaneously

Question 14

What receptors are activated to from an EPSP?

Answer 14

Na+

Question 15

What receptors are activated to from an IPSP?

Answer 15

Cl-/K+

Question 16

What is the purpose of summation of IPSPs?

Answer 16

Harder to generate an AP

Question 17

What does the magnitude of IPSPs depend upon?

Answer 17

The ion that created it

CL- is smaller than K+

Question 18

When are IPSPs used?

Answer 18

Inhibition of antagonistic muscles

Neural function and fine tuning

Question 19

What are composite postsynaptic potentials?

Answer 19

Composite potential due to all EPSPs and IPSPs