NEET BIOLOGY

ECOLOGY

EXCRETORY PRODUCTS AND THEIR ELIMINATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a kidney?
A
stores urine
B
a filter for the blood
C
liquid waste
D
carries urine from bladder to outside the body
Explanation: 

Detailed explanation-1: -The kidneys act as very efficient filters for ridding the body of waste and toxic substances, and returning vitamins, amino acids, glucose, hormones and other vital substances into the bloodstream. The kidneys receive a high blood flow and this is filtered by very specialised blood vessels.

Detailed explanation-2: -Here’s how kidneys perform their important work: Blood enters the kidneys through an artery from the heart. Blood is cleaned by passing through millions of tiny blood filters. Waste material passes through the ureter and is stored in the bladder as urine.

Detailed explanation-3: -Kidneys have many jobs, from filtering blood and making pee to keeping bones healthy and making a hormone that controls the production of red blood cells. The kidneys also help regulate blood pressure, the level of salts in the blood, and the acid-base balance (the pH) of the blood.

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