The system of cells, organs, and chemicals of the body that responds to attacks from diseases and injuries is called the __________ system.

Question

Quizplus · Accepted Answer

The immune system is responsible for defending the body against invading microorganisms, such as bacteria and viruses, and abnormal cells, such as cancer cells. It includes specialized cells, tissues, and organs that work together to recognize and neutralize or destroy harmful substances. The endocrine system regulates bodily functions by means of chemicals called hormones. The sympathetic nervous system is responsible for the "fight or flight" response to stress, while the respiratory system is responsible for breathing and gas exchange.

The System of Cells, Organs, and Chemicals of the Body