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  • In humans, the life processes are controlled and regulated by (a) reproductive and endocrine systems (b) respiratory and nervous systems (c) endocrine and digestive systems (d) nervous and endocrine systems

In humans, life processes are controlled and regulated by
(a) reproductive and endocrine systems
(b) respiratory and nervous systems
(c) endocrine and digestive systems
(d) nervous and endocrine systems

Answers (1)

(d) nervous and endocrine systems

Reproductive, respiratory, and digestive systems have no role to play in the control and regulation of life processes. It is the nervous system and the endocrine system that control and regulate all the processes including the reproductive, respiratory, and digestive systems. The nervous system consists of a network of neurons that allows signals to move between the brain and the body. The endocrine system releases hormones into the body that regulate a variety of functions such as metabolism, digestion, blood pressure, and growth. The endocrine system is not directly linked to the nervous system. They two interact in different ways.

Explanation for Incorrect Options:

(a) Our reproductive system carries out the events necessary only for reproduction. These events are regulated by the hormones released from the endocrine system. Hence, the reproductive system functions only in the reproduction process whereas the endocrine system works with the brain to perform these life processes

(b) The respiratory system regulates the exchange of oxygen and carbon dioxide in our bodies. The nervous system controls the sensory receptions and automatic and voluntary actions involved with the respiratory system. Hence, the nervous system coordinates with the endocrine system to carry out this process whereas the respiratory system is only involved in respiration and no other life processes.

(c) The digestive system is involved in the intake of food, its digestion, and absorption into the blood for assimilation. It does not involve other life processes whereas the Endocrine system regulates the level of hormones in the blood. 

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