Question

What is an organ system? Name three organ systems in the human body and their main functions.

Answer 1

A group of organs working together to carry out life functions is an organ system.
Following are the three organs system in the human body:
(i) Circulatory system : Its main function is to transport nutrients, oxygen and waste to all parts of the body.
(ii) Nervous system : Its main function is to control all the functions of the body.
(iii) Respiratory system : Its main function is to take oxygen inside the body and to expel carbon dioxide from the body.