Question

Integrative system in the body are
a. Endocrine system
b. Nervous system
c. Blood vascular system
d. Both endocrine system and nervous system

Answer 1

Hint: Integrative system is when more than one organs work together in the body to maintain the body homeostasis and proper functioning. Although, these organs are studied independently. For instance, the cardiovascular system, lymphatic system, and urinary system together help the body to maintain the water balance.

Complete answer:
The endocrine system and nervous system in the human body are integrative systems. They control the functioning of the body.

> Nervous system
It is a highly integrated system which has three functions based on sensory input, integration, and motor output.
• Sensory input comes from sensory receptors that look over the changes occurring inside and outside of the body.
• Primary function of the nervous system is to control and communicate throughout the body. It is done by integrating information from sensory receptors.
• One activation of response, the nervous system sends signals via motor output to initiate the response.
The nervous system comprises two major subdivisions, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord and the PNS is a vast network of nerves which have bundles of axons.

> Endocrine System
Just like the nervous system, the endocrine system is also an integrative system. Endocrine system is composed of various glands that control the body’s hormonal functioning. Some of the major endocrine glands are:
• Pineal gland
• Pituitary gland
• Thyroid gland
• Thymus
• Adrenal gland
• Pancreas
• Ovary (in females)
• Testes (in males)
These glands secrete hormones directly into the blood unlike exocrine glands which secrete hormone through the ducts. The hormone secreted in blood is transported throughout the body, but it only affects the target cells.

Hence, the correct answer is option (d).

Note: There are many differences between nervous system and endocrine system. Nervous system controls the motor system whereas the endocrine system controls through chemicals. Nervous system is fast acting whereas the endocrine system is not.