Question

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

Answer 1

The correct option is D

nervous and endocrine systems

The correct option is D:

The explanation for the correct answer:

1. Nervous system act as the command center of the human body. It originates from the brain.
2. So nervous system controls voluntary and involuntary actions in our body.
3. It controls the metabolism of our body, regulates functions including, digestion
4. The nervous system receives general sensory information such as touch, pressure, pain, temperature, taste, smell, vision, sound, etc.
5. The nervous system integrates information from different parts of the body and processes them.
6. The endocrine system is comprised of the endocrine glands in our body.
7. Endocrine glands release their secretions into the body. They control and regulate biological processes in the body throughout the life period.
8. The hormones released by the endocrine glands help coordinate the body's functions, metabolism, growth, and development, sleep cycle, sexual pattern, emotions, mood, etc.
9. The endocrine system continuously monitors the number of hormones in the blood and regulates their amount.
10. Hence endocrine and the nervous system perform the major life processes in our body. They coordinate to contribute to the growth and development of the individual.

The explanation for incorrect answer:

Option A:

1. The reproductive system carries out the events necessary for reproduction. Male and female reproductive systems are entirely different. The reproductive events are regulated by the hormones released from the endocrine system.
2. Endocrine system release hormones which regulate several life processes including reproduction. It also maintains, metabolism, sleep cycle, sexual pattern, emotions, mood, etc.
3. The reproductive system plays a role only in the reproduction processes. The endocrine coordinates with the brain to perform life processes.
4. Hence, it is an incorrect option.

Option B:

1. The respiratory system controls and maintains the transfer of oxygen and carbon dioxide in our bodies. The oxygen necessary for the body is inhaled and transported via the blood to the cells and tissues.
2. Carbon dioxide produced as waste is transported from cells and tissues is transported and exhaled.
3. The nervous system controls sensory receptions, automatic and voluntary actions, and other life processes. The nervous system coordinates with the endocrine system to carry out the processes. The respiratory system is involved only in respiration, and no other life processes.
4. Hence, it is an incorrect option

Option C:

1. Endocrine releases and maintains the level of hormones in the blood. The hormones carry out several life processes including digestion, reproduction, growth, development, metabolism, etc.
2. But the digestive system is only involved in the intake of food, its digestion, and its absorption into the blood for transportation to other organs.
3. It is involved in no other life processes. Endocrine and nervous systems together regulate the life processes of an organism.
4. Hence, it is an incorrect option

Final answer: Therefore in humans, the life processes are controlled and regulated by nervous and endocrine systems