Immunity of Human Being

Mean:
Immune resistance
Ity Condition/occurrence
Definition:
"The ability of a body which resist against the disease or pathogen is known as immunity"
Immunology:
It is the branch of biology in which we can study about immunity.

Note: from disease, we can protect over self by 3 line defense. These lines of defense are given below;

1-First line Defense:
Definition:
"There is not any specific and inclouded structure, chemicals and processes that work to prevent pathogens from entering the body".
Components of 1st line defense:
There are the main three-component which are included in 1st line defense
1-Skin
2-defense against respiratory tract
3-defense against digestive tract
Diagram:

the second diagram is used for digestive and respiratory system
Image result for 1st line of defence

2-second line of defense:
definition:
"It is also called non-specific defense".
Components of 2nd line defense:
the main component of 2nd line defense is the following
1- Macrophages and Neutrophils
2- Natural killer Cell
3-Complement System
4-Interferon
5-Inflammatory Response
6-Pyrexia and Pyrogens
Diagram:

Comments

Digestive System

Definition: "The mechanical and chemical break down of large, complex, non-diffusible food into small, simple, diffusible and soluble form is known as Digestion". 1)Mechanical digestion: "The break down of food without the help of any chemical or enzyme action is called mechanical digestion". 2)chemical Digestion: "The break down of food with the help of digestive juices or enzyme present in the digestive tract". Digestiv e System: "it is the system in which the organs are involved in the process of the digestive system or absorption. Part,s: There are two different parts,s of the digestive tract. 1)Alimentary Tract: The food passes from that tract. It starts from the mouth and ends at the anus. It is consists of a mouth, pharynx, esophagu

Three type of chromosome

There are three main types of chromosomes on the base of ribosomes: 1:free chromosome 2:membrane bounded chromosome 3:orgnelleies bounded membrane No1: Free chromosome they are present insole or matrix of the cell. Many are present in the mitochondria of the cell. No2: Membrane-bounded chromosome. The single chromosome of a prokaryotic cell is not enclosed within a nuclear membrane . Among eukaryotes, the chromosome is contained in a membrane boundary of the cell nucleus . No3: O rganelles bounded chromosomes are mainly found in the cytoplasm of the cell. In the animals, cells have different organelles such as the endoplasmic reticulum, Golgi apparatus, chloroplasts, mitochondria, and others. Have contained several, rod-shaped chromosome.

pioneer 1

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