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Its actually something you might not think of, it's the skin! It acts as a barrier to microbes first of all. There are bacteria that are constantly present on the skin that prevent other possibly harmful bacteria from reproducing and possible penetrating the skin. Secretions like sweat also contain lysozymes that can destroy the cell wall of some bacteria. Once the skin is penetrated other lines of defense take over

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What system is the body's first line of defense?

The body's first line of defense is the innate immune system, which includes physical and chemical barriers like skin, mucous membranes, and stomach acid that help prevent pathogens from entering the body. If pathogens breach these barriers, the immune system responds with inflammation and activates other immune cells to fight off the infection.


What is the first defense to react when your body is attacked by a foreign substance?

The first defense is nonspecific.


The skin and mucous membranes are examples of?

The skin and mucous membranes are examples of physical barriers that serve as the first line of defense for the immune system. They help to prevent pathogens from entering the body and causing infection.


Are the adenoids part of the immune systems?

Yes adenoids are part of immune system. It is the first line of defense.


What is the immune system called?

The immune system is used to prevent and destroy infection from various pathogens in the body. It consists of the circulatory system, lymphatic system, bone marrow, spleen and thymus gland.The first line of defense is against all foreign invaders.It is what is responsible for keeping you healthy. The human immune system is very complex, and has multiple components that all need to work in harmony for optimized function.


What is first line of defense and what is second line of defense?

skin and mucous membranes first line of defense second line-leukocytes and macrophages, inflammation and fever third is immune system


Is the integumentary system the second and third line of defense against infection?

The integumentary system is one of the first lines of defense against infection. It provides a physical and chemical barrier against the entry of pathogens.


What is the first line of defense against infection?

Your skin,sweat,mucus,and tears is the first line of defense of your immune system. it is the original protector from bacteria and viruses


If bacteria get into your stomach of a human what first line of defent of the immune system will potentially stop the bacteria?

If bacteria get into the stomach of a human the first line of defense of the immune system that will potentially stop the bacteria is the gastric juice in the stomach.


Which leukocytes are increased in a bacterial infection?

Neutrophils are typically increased in response to a bacterial infection. They are the first responders of the immune system and phagocytize bacteria to help eliminate the infection.


Contrast the first line of defense with the main line of defense?

In the immune system, the first line of defense are mechanical and physical barriers, such as the skin and the cornea of the eye. The main line of defense, meanwhile, are the innate immunity and acquired immunity of an organism.


How does the integumentary system work with the Immune system?

The integumentary system serves as the first line of defense of the immune system by protecting the body's internal structures from any harmful bacteria or other harmful microbes in the environment. This system is compromised when the skin is cut.