Page 177 - AFCAT-GK-GEF-protected

WHATSAPP :- 8699247491
YOUTUBE CHANNEL :- GOVERNMENT EXAMS FUNDA

IMPORTANT FACTS ABOUT BLOOD

The study of blood is known as Haematology

The normal volume of blood in an adult human is 4.7 to
5 litres

Haemoglobin is a protein in red blood cells that carries
oxygen to other cells in your body; it contains iron

which combines with oxygen to give our blood, a red

color.

Blood is purified mainly by lungs which remove
gaseous impurities like CO2 and kidneys which remove

other impurities.

The drug or chemical which prevents blood from

clotting is called anticoagulant.

William Harvey was the first scientist to describe
accurately how blood is pumped around the body by the

heart.

Karl Landsteiner classified the bloods of human

beings into A, B, AB, and O groups.

Rh blood group system was discovered by Karl
Landsteiner and A.S. Weiner. Each blood group type

may be Rh positive or negative.

The most common blood group type is O+ or O positive

The normal blood pressure range is 120/80. The top

number (120) is known as the systolic number while the
bottom number (80) is known as the diastolic number.

Blood pressure is measured by an instrument known
as sphygmomanometer.

Universal Recipient is AB+ and univeral donor is o-