Circulation
Class 8
Circulation System :-
Human beings need food and oxygen to stay alive. They also release harmful substances like carbon dioxide and other wastes. The transport of these substances takes place through the circulatory system.
The human circulatory system is of two types -
Blood Vascular System :-
BLOOD :-
Blood is a red coloured fluid. It flows through the blood vessels. An adult consists of 5-6 litres of blood.
Blood is made up of two components -
Human beings need food and oxygen to stay alive. They also release harmful substances like carbon dioxide and other wastes. The transport of these substances takes place through the circulatory system.
The human circulatory system is of two types -
- Blood Vascular System: It consists of Blood, Blood Vessels and the Heart.
- Lymphatic System: It consists of Lymph, Lymph Vessels and Lymph Nodes.
Blood Vascular System :-
BLOOD :-
Blood is a red coloured fluid. It flows through the blood vessels. An adult consists of 5-6 litres of blood.
Blood is made up of two components -
- Fluid Components - Blood Plasma
- Cellular Component - Red Blood Cells (RBCs) , White Blood Cells (WBCs) and Platelets.