Question

What is immunity? Explain the innate immunity with four types of barriers to defend the body from development of disease.

Answer 1

Hint: Immunity is the capability of cellular organisms to resist harmful microorganisms. Immunity involves each specific and nonspecific part. The nonspecific parts act as barriers or eliminators of a large variety of pathogens no matter their substance make-up.

Complete answer:
Immunity will be outlined because the ability of associate degree organisms to resist the morbific damage caused by another living organism, or to resist the sensitivity mediated by the parts of living organisms.

Innate immunity is that the inborn associate degreed inherent mechanism that an organism is born with. These are gifts since birth of a personal and are to blame for providing the primary line of defense to the body. it's conjointly referred to as non-specific immunity. The parts of the immunity ar as follows:

1. The anatomical or chemical barriers- these embrace the skin, membrane, gastro-intestinal tract, urino-genital tract and tract that are accountable for preventing the entry of microorganism or to lure the microorganism throughout its entry within the body.

2. The somatic cell barriers- these embrace the leukocytes' gift in blood that are capable of playacting bodily processes and killing the microorganism, as an example, macrophages, neutrophils, natural killer cells.

3. Plasma proteins- plasma of the blood is made in proteins that perform immunological functions, like the complement proteins that inform somatic cell cells a couple of microorganisms and conjointly trigger production of antibodies.

4. Cytokines- these are the proteins created by the animal tissue cells (dendritic cells), neutrophils, macrophages that manage the expansion and unfold of infection.

Note: Innate immunity is that the initial line of defence of the body against any offensive microorganism and provides immediate immunity to the body. It contains of the physical barriers and therefore their secretions like the skin and therefore the secretion lining of the GI tract and therefore the tract that stops any foreign microorganism from offensive the body and the cells like the macrophages, neutrophils, monocytes, mast cells etc. that are concerned in bodily process of the microorganism, activation of the complement system, secreting cytokines or histamines etc. that successively facilitate attack or destroy the offensive microorganism and initiate repair processes.