Question

Thin-walled blood vessels are called:

Refer to the given figure and select the option that correctly matches the labelled parts (i)-(iv) with their functions (a) - (d). (a) Carries deoxygenated blood to the heart from the body parts (b) Carries oxygenated blood to the body parts from the heart (c) Carries deoxygenated blood to the lungs from heart (d) Carries oxygenated blood to the heart from lungs

Name the type of blood (oxygenated/ deoxygenated) transported by each of the following mentioning the path, i.e., from one organ (which place) to another (which place) (i) Vena cava (ii) Pulmonary artery

Human beings exhibit 'double circulation' during which blood is passed through the lungs and heart. (a) State the route of the first and the second circulation through the chambers of the heart and explain the usefulness of such circulation in humans. (b) Name the blood vessels that: (i) carry oxygenated blood from the lungs to the heart (ii) carry deoxygenated blood from the heart to the lungs