Explain the concentration of platelets in human blood.
(N/A) Platelets,also known as thrombocytes,are cell fragments produced from megakaryocytes in the bone marrow.
In a healthy human adult,the blood contains approximately $150,000$ to $350,000$ platelets per $mm^3$ of blood.
These cells play a crucial role in the process of blood coagulation (clotting) to prevent excessive blood loss during an injury.
In a healthy human adult,the blood contains approximately $150,000$ to $350,000$ platelets per $mm^3$ of blood.
These cells play a crucial role in the process of blood coagulation (clotting) to prevent excessive blood loss during an injury.
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The lifespan of human white blood cells (leukocytes) is approximately ......... .
Match the different types of leucocytes (Column-$I$) with their percentage of occurrence (Column-$II$) in a healthy adult and choose the correct answer.
Column-$I$ Column-$II$ $A$. Neutrophils $(i)$ $6-8\%$ $B$. Lymphocytes $(ii)$ $60-65\%$ $C$. Monocytes $(iii)$ $0.5-1\%$ $D$. Basophils $(iv)$ $2-3\%$ $E$. Eosinophils $(v)$ $20-25\%$
| Column-$I$ | Column-$II$ |
|---|---|
| $A$. Neutrophils | $(i)$ $6-8\%$ |
| $B$. Lymphocytes | $(ii)$ $60-65\%$ |
| $C$. Monocytes | $(iii)$ $0.5-1\%$ |
| $D$. Basophils | $(iv)$ $2-3\%$ |
| $E$. Eosinophils | $(v)$ $20-25\%$ |
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