Question

Kidneys are vital organs for survival. Several factors like infections, injury or restricted blood flow to kidneys reduce the activity of kidneys. This leads to accumulation of poisonous wastes in the body, which can even lead to death. In case of kidney failure, an artificial kidney can be used. An artificial kidney is a device to remove waste products from the blood through dialysis.

Assertion(A): The purpose of making urine is to filter out undigested food from intestine. Reason(R): Kidneys filter the waste and produce urine.

Name the part of the human excretory system where nephrons are found. Write the structure and function of nephrons.

Write one specific function each of the following organs in relation with excretion in human beings : (i) Renal Artery (ii) Urethra (iii) Glomerulus (iv) Tubular part of nephron

Name the following : a) The three carbon molecule that is formed due to break down of glucose during respiration. b) The nitrogenous waste that is removed from the blood in our kidneys.