Which of the following body systems is primarily responsible for maintaining homeostasis?

Correct option is D

Ans: (d) Endocrine System and Nervous System Sol. The endocrine system and the nervous system are primarily responsible for maintaining homeostasis in the body. These systems work together to regulate various processes such as temperature control, blood pressure, hormone levels, and other vital functions.
· The nervous system regulates rapid, short-term responses to changes in the environment, such as regulating heart rate, breathing, and reflex actions.
· The endocrine system controls slower, long-term processes like metabolism, growth, and reproductive functions through the release of hormones that help regulate internal balance (homeostasis).
Explanation of each option:
· (a) Digestive System and Integumentary System: The digestive system processes food and absorbs nutrients, and the integumentary system (skin) provides a barrier against environmental changes. While both systems contribute to health, they are not primarily responsible for homeostasis.
· (b) Digestive System and Respiratory System: The digestive system processes food, and the respiratory system facilitates the exchange of gases. These systems help in maintaining energy balance and oxygen levels but are not primarily responsible for homeostasis.
· (c) Integumentary System and Endocrine System: The integumentary system plays a role in temperature regulation and protection, and the endocrine system regulates metabolism and growth. However, homeostasis is better maintained by the nervous system along with the endocrine system, rather than by the integumentary system alone.