Biological

Question 1

What is the function of the brain?

Answer 1

Processes all incoming information from the senses then controls the body

Question 2

What is the function of the spinal cord?

Answer 2

Connects the brain to the rest of the body to allow messages to be passed along .

Question 3

What is the function of neurons?

Answer 3

They are cells in the central nervous system that passes messages around the body.

Question 4

What is synaptic transmission?

Answer 4

-Electrical message reaches axon terminal.
-Calcium channels open and fuse with vesicles containing neurotransmitters.
-These cross the synaptic gap and bind to receptors on the post synaptic neutron which turns to a chemical message
-Message turns back into electrical carries on in the post synaptic neurone

Question 5

Effect of dopamine on the CNS

Answer 5

Dopamine increases pleasurable feelings. Due to the increase, the brain reduces its natural levels which makes you feel unpleasant, so makes you want to take more.

Question 6

Effects of cocaine on CNS

Answer 6

-Prevents reuptake of dopamine so more of it is in the synapse. Increase causes happiness
-Overtaking leads to damage receptors which makes you addicted.

Question 7

What is the reward pathway?

Answer 7

-The good feelings such as euphoria makes you want to repeat the behaviour of taking these drugs.

Question 8

What are the 4 lobes of the brain?

Answer 8

Frontal, Parietal Occipital and Temporal lobe.