Capillaries

Q. What are the characteristics of veins?

Q. Fill in the blanks: (iv) The substances to and from the tissues diffuse through the walls of

Q.

Exchange of blood takes place between blood tissues and capillaries.

1. True

2. False

Q.

Which of the following is a characteristic of a blood capillary?

1. Blood pressure, pulse, cardiac output.

2. Systole, diastole, stroke volume.

3. Isovolumetric contraction, isovolumetric relaxation, ejection.

4. Sinoatrial node, bundle of his, atrioventricular node.

Q. Which one is correct regarding the walls of blood vessels?

1. Arteries - Thin
   Veins - Thick
2. Arteries - Thick
   Veins - Thin
3. Both Arteries & Veins are thin walled
4. Both Arteries & Veins are thick walled

Q.

Choose the incorrect statement.

1. Atria are thin.

2. Atria are the blood-receiving chambers.

3. Walls of atria are thicker than ventricles.

4. None of these

Q.

Very fine blood vessels known as ________ form the junction between arteries and veins.

Q. Explain briefly three major types of blood vessels in human beings?

Q. Explain briefly three major types of blood vessels in human beings?