State the differences between artery, vein and capillary.

Question

MyClass24 · Accepted Answer

Arteries


Veins


Capillaries




These are tough, thick and comprises
of elastic tubes.


Veins are thin-walled and comprises of
non-elastic tubes.


Capillaries are very thin-walled tubes.




They contain a narrow lumen.


They contain a wide lumen.


Only RBC can pass through lumen.




Blood is carried away from the heart to various organs at high
pressure.


Blood id transported to the heart from various organs at low
pressure.


Blood is carried from arteries to veins.




Valves are absent.


Valves are present to
prevent backward flow of the blood.


Valves are absent.




They transport only oxygenated blood (except for the pulmonary artery).


They transport only deoxygenated blood (except for the pulmonary vein).


They exchange oxygen, carbon dioxide, water and salts between the blood and the
surrounding tissues.

Arteries	Veins	Capillaries
These are tough, thick and comprises of elastic tubes.	Veins are thin-walled and comprises of non-elastic tubes.	Capillaries are very thin-walled tubes.
They contain a narrow lumen.	They contain a wide lumen.	Only RBC can pass through lumen.
Blood is carried away from the heart to various organs at high pressure.	Blood id transported to the heart from various organs at low pressure.	Blood is carried from arteries to veins.
Valves are absent.	Valves are present to prevent backward flow of the blood.	Valves are absent.
They transport only oxygenated blood (except for the pulmonary artery).	They transport only deoxygenated blood (except for the pulmonary vein).	They exchange oxygen, carbon dioxide, water and salts between the blood and the surrounding tissues.