Name the following:

1. The basic structural and functional unit of kidney.
2. The cup-shaped structure of nephron.
3. The part of nephron which collects urine from the convoluted tubule.
4. The process of filtration of blood through a machine, outside the human body.
5. The disease which can be identified by the presence of glucose in the urine.
6. The blood vessel that brings blood to the kidneys.

Write True or False for the following statements in the spaces provided. Rewrite the false statements in correct form.

1. Removal of solid undigested food is excretion.
2. Medulla of kidney passes urine into urinary bladder.
3. Excess sugar in blood is a symptom of diabetes.
4. Urine is devoid of blood cells.

Name :

1. Three nitrogenous wastes of the body.
2. Four main organs of the human urinary system.
3. Three accessory excretory organs in humans.
4. Three crystalline substances which can cause kidney stones.
5. Two water soluble vitamins.

Define the following:

1. Excretion
2. Excretory organs
3. Dialysis
4. Nephron
5. Osmoregulation