Distinguish between the following pairs on the basis of the words indicated in the brackets [] :

Lungs and Liver [Excretory products]

Distinguish between the following pairs on the basis of the words indicated in the brackets [] :

Blood of renal artery and renal vein [Nitrogenous wastes]

Draw a neat diagram of the vertical section of a human kidney and label its five important parts : Capsule, Renal cortex, Renal medulla, Papilla of medulla and Renal pelvis.

Given alongside is the diagram of an organ system of humans. Study the same and answer the following questions :

1. Name the organ systems shown completely and partially respectively.
2. Label the guidelines 1 to 4.
3. Name the muscular sheet which divides the thorax and abdomen.
4. Mention the blood vessel which supplies blood from the heart to the kidney.
5. Name the blood vessel which carries deoxygenated blood that is devoid of nitrogenous wastes.