Question

Fill in the blanks to complete the following statements.

(xix) Arteries are _________ walled and the veins are __________ walled blood vessels.

• A. thin
• B. thick

Answer 1

Blood vessels:

1. The tube-like structures or a network that transport blood throughout the body are called blood vessels.
2. Blood vessels are one of the inevitable structures that perform circulation.
3. There are three types of blood vessels namely - arteries, veins, and capillaries.

Walls of arteries and veins:

1. Arteries are comprised of thick walls and a narrow central lumen.
2. Veins are thin-walled with a larger central lumen.

Arteries are thick walled and the veins are thin walled blood vessels.