Animal Physiology

Brain and Nervous system

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1) The largest part of the human brain is called the . It contains centres responsible for higher mental faculties. It has many discrete areas, two of which are the strip and the motor strip, each with its own function.
2) The brain possesses many other parts in addition to the cerebrum. The is the centre responsible for controlling balance and movement; the contains centres that control breathing and heart rate; the has centres that regulate water balance and body .
3) The central nervous system consists of the and the cord. the CNS receives information via sensory nerves from the sense organs. It sorts out this information and sends messages via nerves to muscles, which make appropriate .
4) A reflex is a simple arrangement of three nerve cells; a sensory , a relay neurone and a motor neurone.
5) A reflex is a rapid, , involuntary response to a . It depends on the transmission of a nerve impulse through a reflex arc.
6) Regulation of body temperature is an example of feedback control. The hypothalamus responds to an increase in body temperature by sending nerve impulses to such as the skin. Responses are made that correct the deviation and bring the body temperature back to its .