Search results
Results from the WOW.Com Content Network
A red blood cell in a hypotonic solution, causing water to move into the cell A red blood cell in a hypertonic solution, causing water to move out of the cell. Hemolysis or haemolysis (/ h iː ˈ m ɒ l ɪ s ɪ s /), [1] also known by several other names, is the rupturing of red blood cells (erythrocytes) and the release of their contents into surrounding fluid (e.g. blood plasma).
Red blood cells (RBCs), referred to as erythrocytes (from Ancient Greek erythros ' red ' and kytos ' hollow vessel ', with -cyte translated as 'cell' in modern usage) in academia and medical publishing, also known as red cells, [1] erythroid cells, and rarely haematids, are the most common type of blood cell and the vertebrate's principal means of delivering oxygen (O 2) to the body tissues ...
Erythrocytes have a lifespan on average of 120 days and so are constantly being destroyed by macrophages in the spleen and liver. Macrophages will also engulf macromolecules , and so play a key role in the pharmacokinetics of parenteral irons .
Hemoglobin is an iron-containing protein that gives red blood cells their color and facilitates transportation of oxygen from the lungs to tissues and carbon dioxide from tissues to the lungs to be exhaled. [3] Red blood cells are the most abundant cell in the blood, accounting for about 40–45% of its volume.
A feedback loop involving erythropoietin helps regulate the process of erythropoiesis so that, in non-disease states, the production of red blood cells is equal to the destruction of red blood cells and the red blood cell number is sufficient to sustain adequate tissue oxygen levels but not so high as to cause sludging, thrombosis, or stroke ...
The combined surface area of all red blood cells of the human body would be roughly 2,000 times as great as the body's exterior surface. [ 14 ] 4,000–11,000 leukocytes : [ 15 ] White blood cells are part of the body's immune system ; they destroy and remove old or aberrant cells and cellular debris, as well as attack infectious agents ...
One of the most common tests is called the erythrocyte sedimentation rate, a blood test that measures the level of certain proteins that correlate with the amount of inflammation in the body.
The red pulp macrophages also obtain iron by scavenging a complex of haemoglobin (released from erythrocytes destroyed intravascularly throughout the body) and haptoglobin, via endocytosis through CD163. The iron stored in the splenic macrophages is released in accordance with the requirements of the bone marrow. [5]