Question

Defenses which help reduce the chances of infection include _____.

ear wax, the skin, and saliva
hormones, stomach acid, and sputum
blood, hormones, and enzymes
saliva, enzymes, and proteins

Answer 1

ear wax, the skin, and saliva is the answer because they prevent the entrance of infections and harmful organisms

Answer 2

Answer: Option A

Explanation:

The human has its own way to prevent and cure infections or diseases. The system that is responsible for preventing the entrance of harmful microorganism inside the body is Immune system.

The immune system of the body has four lines of defense by which it protects the body. The first line of defense includes ear wax, skin and saliva which prevents the entrance of infectious organisms.

The mucous secreted by ear adheres the microorganism and does not allows it to enter the body. Saliva kills the harmful bacteria and does not allows it go inside the body and cause infection. Skin is the largest organ preventing the entry of pathogens.