Formative Practice 12.2 (Form 4 Biology Textbook Exercise and Answer)


Question 1:
Explain the role of the brain in body coordination.

Answer:
The brain receives various types of information from the receptor. It analyses, integrates and links the information together to form a meaningful overview.
After the information is processed, appropriate response(s) will be determined and effectors are directed to execute the response(s).


Question 2:
Compare the functions of the cerebellum and the medulla oblongata.

Answer:
The cerebellum functions to control and regulate body movement as well as maintain body balance.
The medulla oblongata controls involuntary responses such as peristaltic action.


Question 3:
State one difference between the functions of the somatic nervous system and the autonomic nervous system.

Answer:
The somatic nervous system controls all voluntary actions while the autonomic nervous system controls involuntary actions.


Question 4:
Explain why we cannot resist sneezing.

Answer:
We cannot refrain from sneezing because it is an involuntary action.

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