Blood fluid
pumped by the heart that circulates throughout the body via the arteries veins
and capillaries. An adult male of average size normally has about 6 quarts 5.6
liters of blood. The blood carries oxygen and nutrients to the body tissues and
removes carbon dioxide and other wastes. The colorless fluid of the blood or
plasma carries the red and white blood cells platelets waste products and
various other cells and substances. Blood
is the primary transport medium of the body. Oxygen enters blood in the lungs
and is carried to cells and carbon dioxide, produced by cells is carried in
blood to the lungs where it is expelled. Ingested nutrients electrolytes and
water are transported by the blood from the digestive tract to cells and waste
products are transported from cells via the blood to the kidneys for
elimination in urine. Blood accounts for 7% of the human body weight. With
an average density around 1060 kg/m3 very close to pure water's
density of 1000 kg/m3. The average adult has a blood volume of
roughly 5 liters 11 US pt.
Which is composed of plasma and several kinds of cells? These blood cells which
are also called corpuscles or formed elements. Consist of erythrocytes red
blood cells RBCs leukocytes white blood cells and thrombocytes platelets. By
volume the red blood cells constitute about 45% of whole blood, the plasma
about 54.3% and white cells about 0.7%. Blood for transfusion is obtained from
human donors by blood donation and stored in a blood bank. There are many
different blood types in humans the ABO blood group system and the Rhesus blood
group system being the most important. Transfusion of blood of an incompatible
blood group may cause severe often fatal complications so crossmatching is done
to ensure that a compatible blood product is transfused. Due to its importance
to life blood is associated with a large number of beliefs. One of the most
basic is the use of blood as a symbol for family relationships through
birth/parentage to be related by blood is to be related by ancestry or descender rather than marriage. This bears closely to bloodlines and sayings
such as blood is thicker than water and bad blood as well as Blood
brother. A blood bank is a
center where blood gathered as a result of blood donation stored and preserved
for later use in blood transfusion. The term blood bank typically refers to a
division of a hospital where the storage of blood product occurs and where
proper testing is performed to reduce the risk of transfusion related adverse
events. It sometimes refers to a
collection center and indeed some hospitals also perform collection. The different markers that can be found in
blood make up eight possible blood types. O negative. This blood type
doesn't have A or B markers, and it doesn't have Rh factor’s positive. A
negative. A positive. B negative. B positive. AB negative. AB positive .In general Rh negative blood is given to Rh-negative patients, and
Rh positive blood or Rh negative blood may be given to Rh positive patients.
The universal red cell donor has Type O
negative blood type. The universal plasma donor has Type AB blood type. Everyone has an ABO blood type A, B, AB, or O and an Rh factor positive or negative. Just like eye or hair color our
blood type is inherited from our parents. Each biological parent donates one of
two ABO genes to their child. The A and B
genes are dominant and the O
gene is recessive. Notice a
raised bump continued bleeding
or pain at the needle-stick site when you remove the bandage. Feel pain or
tingling down your arm, into your fingers. Become ill with signs and symptoms of a cold or flu such as
fever, headache or sore throat within four days after your blood donation.
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