Why do veins have thin walls as compared to arteries?

(d) They have thick elastic walls without valves inside, blood flows under high pressure and carry blood away from the heart to different parts of the body.

Answer: The circulatory system comprises of heart, arteries,veins and capillaries. The system transports oxygenated blood from lungs and the heart throughout the body via arteries. The difference between Arteries and Veins...

(a) Thomson’s model an atom can be considered as a watermelon in which red fleshy part represents positive charge whereas electrons (negative charge) are embedded in it similar to seeds.  (b)...

The mass per unit volume of a substance is called density (density = mass/volume).  As the volume of a substance increases, its density decreases.  Though ice is a solid, it has large...

Arteries: Arteries carry highly oxygenated blood from the heart to the various body parts. They are more elastic and muscular with thick walls. Arterioles are narrower arteries that branch off...

Blood flow in arteries is rapid and at a high pressure. Also arteries have thick elastic walls.

(a) arteries       (b) veins        (c) veins (d) arteries       (e) arteries     (f) veins (g) arteries        (h) veins.

The longer the length of string, the farther the pendulum falls; and therefore, the longer the period, or back and forth swing of the pendulum. The greater the amplitude, or angle, the farther the pendulum falls;...

Transport routes are called basic arteries of our economy:  (i) We use different materials and services in our daily lives.  (ii) Some of these are available in our immediate surroundings, while other...

(i) Since ventricles have to pump blood into various organs, they have thicker muscular walls than atria do. (ii) The lining of alimentary canal has muscles that contract rhythmically in order...