INTRODUCTION TO MICROSCOPY CELL BIOLOGY
DIFFERENTIATED CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Red blood cells divide and make new red blood cells before they die
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Blood stem cells in the bone marrow make new red blood cells
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Embryonic stem cells are still in your body and replace all worn out cells, including red blood cells
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You will not replace dead red blood cells, you have 30 days to live, make them count.
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Detailed explanation-1: -Red cells have an average life span of about 120 days after which they are cleared by-phagocytosis by reticuloendothelial macrophages due to accumulated changes during their life span. Approximately 5 million erythrocytes (the average number per l) are removed from the circulation every second.
Detailed explanation-2: -Erythrocytes live up to 120 days in the circulation, after which the worn-out cells are removed by a type of myeloid phagocytic cell called a macrophage, located primarily within the bone marrow, liver, and spleen.
Detailed explanation-3: -Bone marrow is found in the center of most bones and has many blood vessels. There are two types of bone marrow: red and yellow. Red marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets.