Question

what are two barriers, which prevent the entry of microbes in the body ?

Answer 1

The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.

Answer 2

Two barriers which prevent the entry of microbes in the body

Explanation:

• In our body there many barrier which prevent the entry of microbes in the body such as skin,heart,blood, and etc.
• Skin:- The human skin blocks the entrance of disease-causing microbes into the body. The skin helps regulate the body's temperature, which in turn keeps the organ systems functioning at an optimal level.
• Immune System:- A human's immunity is comprised of a complex system of biological structures and processes. The immune system is designed to distinguish external pathogens from your own tissue and neutralize their harmful effects.
• Blood-Brain Barrie:- The blood-brain barrier is caused by a system of endothelial cells located around the capillaries that enter the central nervous system (CNS).