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The body's first line of defense against pathogens uses mostly physical and chemical barriers such as sweat, skin, tears, mucus, stomach acid, and so on. Our skin and other membranes which line the body passages are fairly effective in keeping most pathogens out of the body. Mucus can trap pathogens, which are then washed away or destroyed by chemicals. Tears, sweat, and saliva all contain chemicals to destroy pathogens to some extent.
There's multiple ways to organize the body's defenses. One way splits them into two parts: specific and nonspecific. Specific, also known as adaptive, is the last line of defense. This describes anything that targets the specific antigen, and not foreign substances in general. Specific includes lymphocytes, their antibodies, and the rather complex system that allows your body to become immune to certain invaders.
The non-specific, or innate, immune system is the first line. This includes the first line of defense as described in the first paragraph, but also includes non-specific cells such as macrophages and neutrophils, which will eat and destroy just about anything it encounters that isn't a part of your body. Also included are the complement system, inflammatory response and interferons, which are left for another question.
What else can I help you with?
What are the four components of the body first line of defense?
skin, mucus, tears, and sweat.
List the four components of the body's first line of defense?
1.Skin. 3.Tears 2.Muscle. 4.Sweat
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
What is the first line defense of disease?
The first line of defense includes the skin, breathing passage, mouth and stomach.
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.
Which line of defense does the skin belong to?
first
Are marines the first line of defense?
yea
What actors and actresses appeared in The First Line of Defense - 2009?
The cast of The First Line of Defense - 2009 includes: Liz Eckert as Ms. Jarvis
What is the first line of defense of a pathogen?
The first line of defense against a pathogen would be barriers. Ex. The skin, Breathing Passages, and The Mouth and stomach.
Which one of the following participate in the bodys second line of defence?
Macrophages, natural killer cells, and complement proteins participate in the body's second line of defense. These components help to identify and eliminate pathogens that have breached the first line of defense, which includes physical and chemical barriers like the skin and mucous membranes.
What are your body's first-line defenses against pathogens in general?
Your skin is the first line of defense.
What are your body' first-line defenses against pathogens in general?
Your skin is the first line of defense.
