For each region of the brain A–E, select the best option for one of its possible functions from the following list

A. Option 3 Alerting reactions. Stimulation of the ascending reticular formation leads to increased electrical activity in the cortex and results in a state of alertness.

B. Option 5 Postural reflexes. Diseases affecting this part of the brain such as Parkinson’s disease result in abnormal distribution of muscle tone. Substantia nigra neurones are dopaminergic.

C. Option 4 Temperature regulation. Temperature regulating centres are found in the hypothalamus.

D. Option 1 Fear and rage reactions. The limbic region is associated with the emotions.

E. Option 2 Vision. Visual impulses are conveyed to the occipital cortex in the optic tracts where they give rise to conscious visual images.