what are different blood cell types explain with their examples
Answers
Answer:
There are three types of blood cells. They are: Red blood cells (Erythrocytes) White blood cells (Leukocytes) Platelets (Thrombocytes)
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Explanation:
Red Blood Cells (Erythrocytes)
Most abundant cells in the blood
Account for approximately 40 to 45 percent of the blood.
Biconcave disc which is round and flat, sort of like a shallow bowl.
Disk diameter of approximately 6.2-8.2 µm.
They have a thick rim and a thin sunken center.
Nucleus Absent.
Can change shape without breaking.
Production of RBCs is controlled by erythropoietin.
RBC contains hemoglobin (33%).
The iron found in hemoglobin gives the blood its red color.
RBCs cannot repair themselves.
Life span of 120 days.
4 million new erythrocytes are produced per second in human adults.
20–30 trillion red blood cells at any given time.
Male: 4.3-5.9 million/mm3 and Female: 3.5-5.5 million/mm3
White Blood Cells (Leukocytes)
Account for only about 1% of the blood.
4500-11,000/mm3
They are the cells that make up the majority of the immune system.
It is the part of the body that protects itself against foreign substances and various types of infections.
They are made in the bone marrow from multi-potent cells called hematopoietic stem cells.
They exist in all parts of the body, including the connective tissue, lymph system, and the bloodstream.
Leukopenia is a low white blood cell count that can be caused by damage to the bone marrow from things like medications, radiation, or chemotherapy.
Leukocytosis is a high white blood cell count that can be caused by a number of conditions, including various types of infections, inflammatory disease in the body.
Platelets are the parts of cells that the body uses for clotting.
Helps to promote other blood clotting mechanisms. Example: Secrete procoagulants (clotting factors) to promote blood clotting.
They secrete vasoconstrictors which constrict blood vessels, causing vascular spasms in broken blood vessels.
They secrete chemicals that attract neutrophils and monocytes to sites of inflammation.
Dissolve blood clots when they are no longer needed.
Digest and destroy bacteria.
They secrete growth factors to maintain the linings of blood vessels.