by Paragragh
skin and mucous membranes first line of defense second line-leukocytes and macrophages, inflammation and fever third is immune system
The body's second line of defense comes into play when pathogens breach the first line of defense, which includes physical barriers like skin and mucous membranes. This response is part of the innate immune system and involves various mechanisms such as inflammation, the activation of phagocytes, and the release of antimicrobial substances. These actions help to contain and eliminate the invading pathogens. Additionally, the second line of defense is non-specific, meaning it responds the same way regardless of the type of pathogen encountered.
self-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.
Your body's third line of defense is specific defenses, such as the immune response.
last line of defense
The question is unclear but you may be describing a "Self-Defense" defense.
exceed local need
The first line of defense includes the skin, breathing passage, mouth and stomach.
there are actually three categories of defenses in the body, namely: first line of defense, second line of defense and the third line of defense.first line of defense is our skin. the vaccine you're talking about falls under the second line of defense because it involves the immune system wherein these vaccines were introduced into the body,nonetheless, the cells on our body creates/secretes chemicals that serve as defense mechanism; and the third line of defense is the use of medications or chemicals prescribed by the doctors.
the body's second line of defense against pathogens is the B cells.
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