Circulatory System in Humans

A human body in average has

• 1-2 litres of blood

• 3-4 litres of blood

• 4-6 litres of blood

• 2-3 litres of blood

The liquid, pale yellow part of blood is called

• Plasma

• Antigens

• Blood cells

• None of the above

Scientific name for blood cells

(a)  

Scientific name for Blood platelets

(a)  

Shape of leucocytes

• Biconcave

• Disc-shaped

• Spherical

• None of the above

The circulation of blood between heart and lungs

• Systemic circulation

• Pulmonary circulation

The heart is enclosed in a double layered membrane called

• Pericardium membrane

• Pericardial membrane

• Pleural membrane

• None of the above

The left side of heart comprises of deoxygenated blood

• True

• False

The valves between left auricle and left ventricle is called

• Tricuspid valves

• Septum

• Bicuspid valves

Blood group O consists of antigens O

• True

• False