body fluids and circulation

Question 1

haemoglobin in 100ml of blood

Answer 1

12-16 grams

Question 2

what is known as the graveyard of RBCs?

Answer 2

spleen

Question 3

what are erythrocytes?

Answer 3

they are red blood corpuscles that contain haemoglobin and carry oxygen in the blood. they are biconcave, formed in the red bone marrow. about 5-5.5 million RBCs mm⁻³ of blood. they die in 120 days and are later destroyed in the spleen.

Question 4

name the formed elements

Answer 4

erythrocytes, leucocytes and platelets

Question 5

define serum

Answer 5

plasma without clotting factors

Question 6

function of albumin

Answer 6

help in osmotic balance, primarily involved in the defence mechanisms of the body

Question 7

function of fibrinogen

Answer 7

for clotting or coagulation of blood

Question 8

define blood

Answer 8

special connective tissue consisting of fluid matrix, plasma and formed elements

Question 9

define plasma

Answer 9

straw coloured, viscous fluid found in blood

Question 10

constituents of plasma

Answer 10

• 55% of blood - 90-92% of water - 6-8% of proteins [fibrinogen, globulins and albumins] - minerals [Na, Ca, Mg, HCO3, Cl] - glucose, amino acids, lipids - coagulation factors