Body fluid and
Circulation..
,Composition of blood..
, It is a fluid connective tissue composed of
different cells (RBCs, WBCs and platelets). The
pH of blood is ~7.4, i.e. slightly alkaline.
Plasma constitutes 55% of blood volume. It
is a viscous fluid and contains 90-92% water.
Other than water, plasma contains 6-8%
proteins (fibrinogens, albumins and
globulins), amino acids, glucose and small
amounts of electrolytes (Na+, Ca++, Cl–, etc.).
Formed Elements include erythrocytes,
leukocytes and blood platelets
, Erythrocytes or RBCs are the most abundant
cells present in the blood
>> formed in the bone marrow
>> biconcave and without a nucleus
>> have a lifespan of 120 days and get
destroyed in the spleen (RBCs’ graveyard)
Leucocytes or WBCs are colourless due to the
absence of haemoglobin. They are of two types
granulocytes and agranulocytes.
Circulation..
,Composition of blood..
, It is a fluid connective tissue composed of
different cells (RBCs, WBCs and platelets). The
pH of blood is ~7.4, i.e. slightly alkaline.
Plasma constitutes 55% of blood volume. It
is a viscous fluid and contains 90-92% water.
Other than water, plasma contains 6-8%
proteins (fibrinogens, albumins and
globulins), amino acids, glucose and small
amounts of electrolytes (Na+, Ca++, Cl–, etc.).
Formed Elements include erythrocytes,
leukocytes and blood platelets
, Erythrocytes or RBCs are the most abundant
cells present in the blood
>> formed in the bone marrow
>> biconcave and without a nucleus
>> have a lifespan of 120 days and get
destroyed in the spleen (RBCs’ graveyard)
Leucocytes or WBCs are colourless due to the
absence of haemoglobin. They are of two types
granulocytes and agranulocytes.
