the integumentary system is the skin and the bodys first line of defense.
Your body's third line of defense is specific defenses, such as the immune response.
Well, you first get infected from a scratch or bite, then the infection spreads into the bloodstream, getting by the first line of defence. The second line of defence, would be the white blood cells. They try overcome or "swallow" the infection. the third line of defense, is the anitgens. If all else fails, your f*cked.
skin and mucous membranes first line of defense second line-leukocytes and macrophages, inflammation and fever third is immune system
The third line of defence against pathogens is called the Specific Immune Responce
when the first and the second lines of defense have already been overcome.
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.
Neutrophils
The body's second line of defense, which includes inflammatory responses and phagocytic cells, comes into play when pathogens manage to breach the first line of defense (skin and mucous membranes). These responses help contain and eliminate the pathogens before they can cause harm.
its killer T cells
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.
This is your bodys natural defense to protect the eyes. It is a reflex.