ANIMAL PHYSIOLOGY
EXCRETION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The kidney is adapted by having two sections which each filter the different substances that need to be removed from the blood. The blood is cleaner when it leaves the kidney than when it enters it because of the filters.
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Mammalian kidneys are adapted to remove waste products from the blood by having a tightly knit structure with large perforations that can filter waste from the blood. The water that is removed from the blood is lost as urine
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The kidneys remove waste from the blood. They have many nephrons which filter the blood in the glomerulus and then selectively reabsorb glucose in the PCT. Water is then balanced in the loop of Henle and the remaining filtrate passes through the collecting duct and ureter into the bladder.
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Detailed explanation-1: -Kidney tubules are long and coiled and this provides a larger surface area for reabsorption and more time is allowed for reabsorption of the useful products. The kidney tubules are highly vascularised to ensure constant removal of reabsorbed substances hence creating more room for further reabsorption.
Detailed explanation-2: -The main function of kidney is to remove poisonous substance like urea, other waste salts and excess water from the blood and excrete them in the form of urine. It produces rennin hormone that helps in controlling blood pressure. 2.
Detailed explanation-3: -Most people know that a major function of the kidneys is to remove waste products and excess fluid from the body. These waste products and excess fluid are removed through the urine. The production of urine involves highly complex steps of excretion and re-absorption.
Detailed explanation-4: -Healthy kidneys filter about a half cup of blood every minute, removing wastes and extra water to make urine. The urine flows from the kidneys to the bladder through two thin tubes of muscle called ureters, one on each side of your bladder. Your bladder stores urine.