Question

Which sentence describes an organ that is part of the human immune system?

A. Tonsils trap pathogens from the air as it enters the body.
B. The esophagus moves pathogens into the stomach to be destroyed.
C. The large intestine contains disease-causing agents that have been broken down.
D. Alveoli exchange gases and expel waste gases from the body.

Answer 1

A. Tonsils trap pathogens from the air as it enters the body.

The immune system is a complex system of cells, tissues, and organs that work together to defend the body against harmful pathogens, such as bacteria, viruses, and parasites. Tonsils are a part of the immune system, as they act as a barrier against pathogens that enter the body through the mouth and nose. They trap and filter out harmful pathogens and other particles, helping to prevent infections in the body.