Question

Write two points of difference between arteries and veins.

Answer 1

Hint: Arteries and veins along with arterioles, venules, capillaries, aorta, pulmonary aorta, vena cava are the vessels of our circulatory. This circulation is further divided into the systemic circulation and pulmonary circulation.

Complete step-by-step answer:

Arteries	Veins
Arteries carry blood from the heart to the visceral organs and extremities.	While veins collect and carry the blood from visceral organs and extremities to the heart.
Arteries usually carry oxygenated blood except for the pulmonary artery which carries deoxygenated blood that goes from the heart to the lungs.	Veins usually carry deoxygenated blood except for pulmonary veins which carry oxygenated blood that goes from lungs to heart.
The wall of the arteries is thicker in comparison to veins. It is around 1mm.	The walls are thinner in comparison to veins. The thickness of the walls is almost half of the thickness of the arterial wall. It is around 0.5mm.
The blood flowing in the arteries is under high pressure.	The blood flowing in the veins is under low pressure.
The diameter of arteries is less in comparison to veins.	The diameter of the veins is more.
The walls of arteries have more elastic tissue.	The walls of veins carry less elastic tissue.
Arteries do not carry any valves.	In veins, valves are present that help to maintain a unidirectional flow of the blood.

Note:
Arteries are highly susceptible to arteriosclerosis and atherosclerosis. It is hardening, thickening, and loss of elasticity in the wall of the vessels. Atherosclerosis is a disease marked by the narrowing of the lumen of arterial vessels due to the deposition of cholesterol.
Inflammation of the wall of veins leads to the formation of an intravascular clot called thrombosis. The clot gets dislodged, as a thrombus. The thrombus travels through the blood and causes embolism. Embolism obstructs the blood flow to vital organs such as the brain, heart, and lungs, leading to many complications.