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Shape Of Red Blood Cells-The different kindsWhat are Erythrocytes?
Erythrocytes are the most common type of cells present in blood. Blood is a connective tissue composed of fluid plasma and blood cells. The blood cells include Erythrocytes (red blood cells), Leucocytes (White blood cells) and Platelets (Thrombocytes). There are 4.6 million red blood cells per mm cube of blood. Red blood cells are the primary means of delivering oxygen from the lungs or gills to the body tissues. A
Schistocyte is a fragmented part of a red blood cell. Erythrocytes are chiefly made up of Hemoglobin, which is a complex molecule containing Heme groups. The color of the erythrocytes is due to the heme group.
Shape Of Red Blood Cells
Mammalian erythrocytes are enucleate, when mature. They don't have a nucleus and thus, no DNA. Mammalian red blood cells assume the shape of a biconcave flattened disc. They are depressed in the center with a dumb-bell shaped depression. This shape of the cell is optimal for the transport of oxygen. The flattened and biconcave shape provides favorable surface area for diffusion in and out of the cell. Another property of the red blood cell is reversible deformability. This property of the cells enables them to change their shape and squeeze through the microcirculation. Healthy people usually have a higher percentage of disc-shaped blood cells.
Erythrocytes are circular, except in camels, where they are oval. In large blood vessels, the red blood cells, sometimes, occur as stacks. This is called as 'rouleaux formation' and occurs during inflammation. The human erythrocytes are smaller than other body cells and the standard diameter is 6-8 micrometer.
Abnormal Shapes
Normal red blood cells are flexible, disc shaped and thicker at the edges than in the middle. In case of certain abnormalities, red blood cells change shape. In one such case, they become teardrop shaped. In people with Sickle Cell Anemia, the red blood cells become crescent or sickle shaped. These cells get stuck in blood vessels and block blood flow. In a hereditary disease called Spherocytosis, the red blood cells become small and spherical. They lack the light center found in normal round red blood cells. In Elliptocytosis, the red blood cells assume an elliptical shape.
Red Blood Cells - The Essential Aspect of a Human Body
Red Blood Cells are the most common type of blood cells found in our body. Also known as the RBC's or enthrocytes, their main task is delivering oxygen from the lungs to body tissues in a human body. A single drop blood contains millions of red...
Nucleated Red Blood Cells- Cytological Preferences in your Blood Stream.
In human vertebrates, the RBC is with out a nucleus. It is only present in certain species of camel. Thus the replication of the RBC is not possible due to lack of nucleus. The nucleated Red Blood Cell contains Basilophilic stippling in its center....
Peripheral blood mononuclear cell- Know More
The standard human peripheral blood mononuclear cell isolation media like that of lymphoprep or Nycoprep 1.077 are less effective for the isolation of these cells from the blood of certain experimental animals. The density of the Peripheral blood...
Blood cell size- Size Determining the Type.
The circulatory fluid in higher vertebrates is called 'blood' whereas in the lower ones it is called 'hemolymph'. An average adults body has five liters of blood. The blood that flows through the whole body with the help of arteries and veins is...
Blood Cell Diseases-Cell disorder
Blood is the life-giving fluid, transporting oxygen and nutrients to the body tissues. It is a connective tissue, proteinaceous in nature. Blood consists of various components including fluid plasma and blood cells. The blood cells comprise the...
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