Answers

Question 1

State two effects that presynaptic neurons can have on post synaptic neurons.

Answer 1

Excite or inhibit

Question 2

State the disease that could be caused by excessive consumption of fructose.

Answer 2

Type II diabetes

Question 3

Outline how contralateral processing of visual stimuli occurs in the human eye.

Answer 3

Optic nerves from the right eye and the left eye meet at the optic chiasma. The right side of the brain processes information from the left visual field from both eyes and vice versa. This enables perception of depth and size.

Question 4

Outline how sounds are perceived in the cochlea, including the name of the cell type involved.

Answer 4

Cilia bundles of hair cells vibrate with the cochlear fluid movement which stimulates receptors.