HUMAN PHYSIOLOGY
BODY FLUIDS AND CIRCULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A Nucleus
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No nucleus
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Nucleus may or may not be present
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None of the above
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Detailed explanation-1: -In humans, mature red blood cells are flexible biconcave disks. They lack a cell nucleus and organelles, to accommodate maximum space for hemoglobin; they can be viewed as sacks of hemoglobin, with a plasma membrane as the sack. Approximately 2.4 million new erythrocytes are produced per second in human adults.
Detailed explanation-2: -CAMBRIDGE, Mass. – Unlike the rest of the cells in your body, your red blood cells lack nuclei.
Detailed explanation-3: -The absence of a nucleus is an adaptation of the red blood cell for its role. It allows the red blood cell to contain more hemoglobin and, therefore, carry more oxygen molecules.
Detailed explanation-4: -The mature red blood cells of mammals do not have a nucleus and mitochondria. In such conditions, RBCs can not use oxygen for themselves, thus all the oxygen absorbed by the haemoglobin of RBC is transported to the tissues.
Detailed explanation-5: -Red blood cells don’t have a nucleus like white blood cells, allowing them to change shape and move throughout your body easier.