PHYSIOLOGY
BLOOD PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The biconcave cells in blood that lack nuclei when they are mature are the:
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red blood cells
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white blood cells
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platelets
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macrophages
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Explanation:
Detailed explanation-1: -In humans, as in all mammals, the mature RBC lacks a nucleus. This allows the cell more room to store hemoglobin, the oxygen-binding protein, enabling the RBC to transport more oxygen. RBCs are also biconcave in shape; this shape increases their surface area for the diffusion of oxygen across their surfaces.
Detailed explanation-2: -Mature human red blood cells (erythrocytes) are highly specialized and terminally differentiated cells that lack normal cell organelles such as a nucleus, endoplasmic reticulum and mitochondria.
Detailed explanation-3: -Erythrocytes are in the shape of a biconcave disc. An erythrocyte is also known as a red blood cell and transports oxygen to and from tissues.
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