Showing posts with label biology. Show all posts
Showing posts with label biology. Show all posts

Vesicular Transport


   Definition:
Vesicle transport is defined as the transport of the material in form of the vesicle in a different cell of the body.

Characteristics of Vesicular Transport:

- Vesicular transport normally transfers the macromolecule. A vesicle is formed and it transports the material from one side two other sides. the material transfer may be liquid or the solid.

- Vesicular transport the energy for the movement of the molecules. The energy is supplied by the ATP.

 -Vesicular transport may import the material into the cell or release the material from the cells.

- Through the vesicular transport, the molecule transport across the cell but not through the membrane. the vesicle is formed which fuse with the plasma membrane and material is moved inside or outside.

- The vesicle formed inside the cell in both where molecule transport inside or outside the cell.

- The shape of the vesicle is large it may the spherical large and irregular

Classification of vesicle transport
Depend on the movement of the vesicle classified into two types:
1.Endocytosis
2. Exocytosis



Definition of Hematocrit

Definition of Hematocrit:
-The percentage of total blood volume occupied by the red blood cells is called as the hematocrit.

-The hematocrit is expressed as a percentage. 

- The normal range of hematocrit in adult male is around 40 to 54 % while in adult female is around 38 to 46 %.


-If Hematocrit lower than the normal range it indicates the anaemia. While Hematocrit is higher than the normal range it indicates the condition known as Polycythemia.

Related Post:





Red blood cells (erythrocytes): definition and characteristic

Definition of Red blood cell (erythrocytes):
Red blood cell is defined as the concave shape blood cells which are responsible to transport oxygen and carbon dioxide gases into the cells.

Characteristic of Red blood cells:
-Red blood cells are the concave disk by the shape.

-Red blood cell disk has diameter of approximately 6 to 8 um (Micrometer).

-Red blood cells are the flexible and mature cell does not have a nucleus.

-The shelf life of the RBC is 100 to 120 days. Red blood cell contains 40 to 45 % part of the cells in the blood.

-Red blood cell contains the haemoglobin which is responsible for transport the oxygen to the different cell of the body from the lungs.
Each red blood cell contains about 280 million haemoglobin molecules.

-Haemoglobin made up of protein and iron. The protein is called as globin. Globin protein contains four polypeptide chain. And the iron metal part of the molecule is known as heme so combine molecule is known as the Haemoglobin.


- Red blood cells are tare as it passes through the thin capillaries as red blood cells are squeezed into the capillaries 


Related post:

Function of Red blood cells (erythrocytes)

Red blood cells (erythrocytes) are the most important cells of the body which have so many functions in our body.

Following are the function of the red blood cells

-The main function of the red blood cell is to carry the oxygen to the different cell of the body from the lungs. It also carries the carbon dioxide to the lungs. Vein carry out the deoxygenated blood while the artery always carries out the oxygenated blood.

-Red blood cell contains the haemoglobin which regulates the blood pressure into the body.

- Under some circumstances, Haemoglobin release the nitrogen oxide which is a gaseous hormone.Then release of nitrogen oxide cause the vasodilatation.




Main Function of Blood

Blood is the one of the most important element of the body which one of the connective tissue. Blood has so many different functions which require for the body. Transportation, protection, and regulation are the main functions of the blood.

 Following are the three main function of the blood in details :
Transportation
Blood carries out the oxygen and supply to the cell which is used to generate the energy in cellular level and also carry the carbon dioxide and remove from the body.
It carries out the nutrient and supplies it to the different cells of the body
Blood also removed the waste material from the body.
Blood also transport the hormone which regulates the different function of the body.

Regulation:
Blood maintain the pH of the body. also, maintain the body temperature. Also, carry out the different hormones which also regulate the different functions in our body. Blood also maintain the pressure of the body

Protection
Blood clot into the body and protect from the excessive blood loss.Clotting of blood process help into the healing the injuries. Blood also protect from the disease. Blood also contains the antibody 

Related Post:


Types of blood cells

Types of blood cells
-Blood cells are the important elements of the blood.
-There is the different type of blood cells in blood. Blood contains the three types of blood cells. Blood cells are the formed by the specified organs.
-Blood cells are produced by the born marrow. Born marrow is the soft fatty tissue inside bone cavities. 
-And process of blood formation is known as hematopoiesis. 

- Following are the types of blood cells

1.    Red blood cell (erythrocytes)
2.    White blood cell (Leukocyte)
3.    Platelets  (Thrombocyte )

Red blood cells
-Red blood cells approximately 40 to 45 percent of the blood. The life of red blood cells is 120 days. Red blood cells transport oxygen to the different cells of the body.

White blood cells
-White white blood cells approximately 1 % of the blood cells.  The life of white blood cells is around 6 hour only. White blood cells are the reason for our immune system White blood cells are fighting with infections.

Platelets            
Platelets are the small blood cells present into the blood. Average platelet count is 150,000 to 450,000 platelets per microliter of blood.
-Platelets help blood to clot and Platelets are rapidly deployed to sites of injury or infection.

Related Post :