neurotransmission

Question 1

overview of neurotransmission

Answer 1

Question 2

what is found in the membranes at the end of pre-synaptic neurons

Answer 2

active zone where vesicles cluster

Question 3

what is found in the membranes at the end of post synaptic neurones

Answer 3

neurotransmitter receptors

Question 4

inotropic receptors

Answer 4

direct gating
The receptor is an integral component of the molecule that forms the channel it controls. Gating of channel is rapid

Question 5

metabotropic receptors

Answer 5

indirect gating
Receptor and the channel it controls are distinct. Gating of channel is slower

Question 6

GABA A receptor

Answer 6

inotropic
-Cl channel

Question 7

GABA B receptor

Answer 7

metabotropic receptor
often potassium channel

Question 8

what is a quanta

Answer 8

the release of neurotransmitter from a single vesicle

Question 9

what is spatial summation

Answer 9

many inputs converge along a neurone to determine its output

Question 10

what is temporal summation

Answer 10

a single input may modulate output by variation in action potential frequency of that input

Question 11

sensory coding

Answer 11

sensory systems code for modality, intensity, location, and duration of external stimuli.

Question 12

what is transduction

Answer 12

the conversion of a physical stimulus into a change in membrane potential (electrochemical signal)

Question 13

what do nocioceptors respond to

Answer 13

painful stimuli

Question 14

what is the receptive field

Answer 14

that region of sensory space whose stimulation results in a change in discharge (usually firing rate) of the neuron