Examples of Year of Blood in the following topics:
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- White blood cells, also called leukocytes (leuko = white), make up approximately one percent, by volume, of the cells in blood.
- The role of white blood cells is very different from that of red blood cells.
- White blood cells are formed continually; some live only for hours or days, while some live for years.
- The morphology of white blood cells differs significantly from red blood cells.
- The different types of white blood cells are identified by their microscopic appearance after histologic staining.
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- Blood substitutes are substances used to mimic the oxygen-carrying capacity of blood, providing an alternative to blood transfusion.
- A blood substitute (also called artificial blood or blood surrogates) is a substance used to mimic and fulfill some functions of biological blood, usually in the oxygen-carrying sense.
- Blood transfusion is the second largest source of new HIV infections in Nigeria.
- Most hemoglobin-based oxygen carriers in trials today carry a shelf life of between one and three years, compared to 42 days for donated blood, which needs to be kept refrigerated.
- According to studies of outcomes of transfusions given to trauma patients in 2008, blood substitutes yielded a 30% increase in the risk of death and about a three-fold increase in the chance of having a heart attack of for the recipients.
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- The circulatory system is effectively a network of cylindrical vessels (the arteries, veins, and capillaries) that emanate from a pump (the heart).
- In an open circulatory system, the blood is not enclosed in the blood vessels, but is pumped into a cavity called a hemocoel.
- An open circulatory system does not use as much energy to operate and maintain as a closed system; however, there is a trade-off with the amount of blood that can be moved to metabolically-active organs and tissues that require high levels of oxygen.
- In fact, one reason that insects with wing spans of up to two feet wide (70 cm) are not around today is probably because they were outmatched by the arrival of birds 150 million years ago.
- (a) In closed circulatory systems, the heart pumps blood through vessels that are separate from the interstitial fluid of the body.
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- This is not surprising since those of African descent formed the largest population segment in the South for 200 or 300 years.
- In HbSS, the full blood count reveals hemoglobin levels in the range of 6–8 g/dL with a high reticulocyte count (as the bone marrow compensates for the destruction of sickle cells by producing more red blood cells).
- From birth to five years of age, they will also have to take penicillin daily due to the immature immune system that makes them more prone to early childhood illnesses.
- The inset image shows a cross-section of a normal red blood cell with normal hemoglobin.
- Figure B shows abnormal, sickled red blood cells blocking blood flow in a blood vessel.
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- Whole blood refers to blood drawn directly from the body from which none of the components, such as plasma or platelets, have been removed.
- The collected blood is generally separated into components by one of three laboratory methods:
- Whole blood transfusion has similar risks to those of transfusion of red blood cells.
- It must be cross-matched on the basis of blood type to avoid hemolytic transfusion reactions.
- Most of the indications for use are identical to those for red blood cells.
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- Blood pressure is a vital sign reflecting the pressure exerted on blood vessels when blood is forced out of the heart during contraction.
- Blood pressure is the pressure that blood exerts on the wall of the blood vessels.
- This pressure originates in the contraction of the heart, which forces blood out of the heart and into the blood vessels.
- Blood pressure is one of the principal vital signs.
- The rate of mean blood flow depends on the resistance to flow presented by the blood vessels.
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- Blood contains plasma and blood cells, some of which have hemoglobin that makes blood red.
- Blood appears red because of the high amount of hemoglobin, a molecule found on RBCs.
- Deoxygenated blood is a darker shade of red.
- Blood generally accounts for 8% of the human body weight.
- Two tubes of EDTA-anticoagulated blood.
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- Dialysis is a process of removing waste and excess water from the blood to provide an artificial replacement for lost kidney function.
- In medicine, dialysis is a process of removing waste and excess water from the blood.
- Erythropoietin is involved in the production of red blood cells and calcitriol plays a role in bone formation.
- Then, in 1945, a 67-year-old comatose woman regained consciousness following 11 hours of hemodialysis with the dialyzer, and lived for another seven years before dying of an unrelated condition.
- The counter-current flow of the blood and dialysate maximizes the concentration gradient of solutes between the blood and dialysate, which helps to remove more urea and creatinine from the blood.
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- Blood pressure is the pressure of blood against the blood vessel walls during the cardiac cycle; it is influenced by a variety of factors.
- Blood pressure is the pressure of the fluid (blood) against the walls of the blood vessels.
- During systole, when new blood is entering the arteries, the artery walls stretch to accommodate the increase of pressure of the extra blood.
- The blood pressure of the systole phase and the diastole phase gives the two readings for blood pressure .
- Stress triggers a decrease in the diameter of the blood vessels, consequently increasing blood pressure.
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- Cerebral circulation is the movement of blood through the network of blood vessels supplying the brain, providing oxygen and nutrients.
- Cerebral circulation refers to the movement of blood through the network of blood vessels supplying the brain.
- The circle of Willis, a circulatory anastomosis that supplies blood to the brain and surrounding structures while providing redundancy in case of any interruption, is a key protection.
- The amount of blood that the cerebral circulation carries is known as cerebral blood flow (CBF).
- Schematic representation of the circle of Willis, arteries of the brain, and brain stem.