Examples of red blood cell in the following topics:
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- Human erythrocytes or red blood cells (RBCs) are the primary cellular component of blood.
- This biconcave shape allows the cells to flow smoothly through the narrowest blood vessels.
- Gas exchange with tissues occurs in capillaries, tiny blood vessels that are only as wide as one cell.
- Each human red blood cell contains approximately 270 million of these hemoglobin biomolecules, each carrying four heme groups (individual proteins).
- Diagram the anatomy of an erythrocyte (red blood cell, or RBC)
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- Sickle-cell disease is an autosomal recessive genetic blood disorder in which red blood cells assume a rigid sickle shape.
- The red blood cells break down at a faster rate.
- This scanning electron micrograph shows red blood cells.
- Figure A shows normal red blood cells flowing freely in a blood vessel.
- Figure B shows abnormal, sickled red blood cells blocking blood flow in a blood vessel.
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- The cells that circulate in the bloodstream are generally divided into three types: white blood cells (leukocytes), red blood cells (erythrocytes), and platelets (thrombocytes).
- Reticulocytes are immature red blood cells, typically composing about 1% of the red cells in the human body.
- Reticulocytes develop and mature in the red bone marrow and then circulate for about a day in the blood stream before developing into mature red blood cells.
- Like mature red blood cells, reticulocytes do not have a cell nucleus.
- When there is an increased production of red blood cells to overcome chronic or severe loss of mature red blood cells, such as in a hemolytic anemia, people often have a markedly high number and percentage of reticulocytes.
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- Sedimentation, in which whole blood sits overnight, causing the red blood cells and plasma to settle and slowly separate by the force of normal gravity.
- Whole blood transfusion has similar risks to those of transfusion of red blood cells.
- Most of the indications for use are identical to those for red blood cells.
- Whole blood is sometimes "recreated" from stored red blood cells and fresh frozen plasma for neonatal transfusions.
- This provides a final product with a very specific hematocrit (percentage of red cells) with type O red cells and type AB plasma to minimize the chance of complications.
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- Blood is composed of plasma and three types of cells: red blood cells, white blood cells, and platelets.
- The cellular components of blood are erythrocytes (red blood cells, or RBCs), leukocytes (white blood cells, or WBCs), and thrombocytes (platelets).
- RBCs, endothelial vessel cells, and other blood cells are also marked by glycoproteins that define the different blood types.
- The combined surface area of all red blood cells of the human body would be roughly 2,000 times greater than the body's exterior surface.
- Leukocytes are usually larger in size (10-14 micrometers in diameter) than red blood cells.
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- Red blood cells have surface-expressed proteins that define the self/not-self nature of the cells.
- Red blood cells have surface-expressed proteins that act as antigens, which are molecules that can illicit an immune system response.
- Red blood cells belong to different groups on the basis of the type of antigen that they express.
- Many people also have the rhesus D (Rh) antigen expressed by their red blood cells.
- Blood type (or blood group) is determined, in part, by the ABO blood group antigens present on red blood cell.
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- Blood contains plasma and blood cells, some of which have hemoglobin that makes blood red.
- It is an extracellular matrix in which blood cells are suspended in plasma.
- Blood contains red blood cells (RBCs), white blood cells (WBCs), platelets, and other cell fragments, molecules, and debris.
- Deoxygenated blood is a darker shade of red.
- By volume, red blood cells constitute about 45% of whole blood, plasma about 54.3%, and white cells about 0.7%, with platelets making up less than 1%.
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- New blood vessels are formed from endothelial stem cells, which give rise to the endothelial cells that line the vessels.
- As part of the circulatory system, blood vessels play a critical role in transporting blood throughout the body.
- The lineages arising from the EPC and the hematopoietic progenitor cell (HPC) form the blood circulatory system.
- Hematopoietic stem cells can undergo self-renewal and give rise to erythrocytes (red blood cells), megakaryocytes/platelets, mast cells, T-lymphocytes, B-lymphocytes, dendritic cells, natural killer cells, monocyte/macrophage, and granulocytes.
- In 1917, Florence Sabin first observed that the development of blood vessels and red blood cells in the yolk sac of chick embryos occur in close proximity and time.
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- Haematopoiesis refers to the formation of blood cells components.
- Haematopoiesis refers to the formation of blood cellular components, including both white and red blood cells.
- Haematopoietic stem cells (HSCs) reside in the bone marrow and have the unique ability to give rise to all mature blood cell types through differentiation into other progenitor cells.
- Megakaryocytes (the cells that produce platelets) and erythrocytes (red blood cells) are not formally considered to be leukocytes, but arise from the common myeloid progenitor cells that produce the other cellular components of blood.
- In developing embryos, blood formation occurs in aggregates of blood cells in the yolk sac called blood islands.
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- The development of different blood cells from HSCs to mature cells is called hematopoiesis.
- Erythrocytes are oxygen-carrying red blood cells derived from common myeloid progenitors.
- In developing embryos, blood formation occurs in aggregates of blood cells in the yolk sac, called blood islands.
- For the stem cells and other undifferentiated blood cells in the bone marrow, blood cells are determined to specific cell types at random.
- Red and white blood cell production is regulated with great precision in healthy humans, and the production of granulocytes is rapidly increased during infection.