Biopsychology-Neurones and Synaptic Transmission

Question 1

How are sensory neurons based (dendrites, axons)

Answer 1

Long dendrites, short axons

Question 2

What are three neurons?

Answer 2

Relay, Sensory, Motor

Question 3

How are motor neurons based? (dendrites, axons)

Answer 3

Short Dendrites, Long axons

Question 4

How are relay neurons based? (dendrites, axons)

Answer 4

Short axons, Short dendrites

Question 5

What causes the firing of a neuron?

Answer 5

Electric transmission- firing of a neuron (action potential)

Question 6

What happens when the electrical impulse reaches the end of the neuron? (presynaptic terminal)

Answer 6

It triggers the release of neurotransmitters from tiny synaptic vesicles

Question 7

What occurs after the neurotransmitters are released?

Answer 7

The NT are transmitted chemically across a synapse but the chemical has to find the receptor that fits it (e.g. Dopamine has to find receptor for dopamine)

Question 8

What happens to excess neurotransmitters?

Answer 8

The excess neurotransmitters go up to presynaptic neuron (called reuptake)

Question 9

What do positively charged cells make the neuron?

Answer 9

Excitory-These are more likely to fire and release dopamine etc.

Question 10

What do negatively charged cells make the neuron?

Answer 10

Inhibitory-These are responsible for calming down the mind

Question 11

What are the neurotransmitters’ influence on behaviour?

Answer 11

Excess dopamine can influence conditions such as schitzophrenia and is obtained by having more dopamine receptors than other people