BLOOD

BLOOD

Blood is a fluid connective tissue and composed of blood corpuscles, plasma and platelets.  It is slightly alkaline is nature (pH 7.4).  Its... January 22, 2022

• Blood is a fluid connective tissue and composed of blood corpuscles, plasma and platelets.

•  It is slightly alkaline is nature (pH 7.4).

•  Its volume in an adult is 5.8 L.

• The oxygenated or pure blood is bright red while the deoxygenated blood is purple coloured (Darker shade of red).

•  People who live at high altitudes have more blood than those who live in low regions.

• This extra blood supplies additional oxygen to body cells.

• During blood clotting fibrinogen changes into fibrin by thrombin which is obtained from thrombop lastin in the presence of Ca²+.

• The haemoglobin content of adult female varies from 13.5-14.5% whereas in adult male its amount varies from 14.5-15.5% Haemoglobin count is highest in the foetus and is about 23 g per 100 mL of blood at birth.