Describe the process of excretion in humans?
Answers
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ANSWER :-
Besides carbon dioxide gas , the human body produce several other kinds of waste materials which mix into the blood . EXCRETION is a process through with this waste products from the blood are removed from the body . the human excretory system is made up of KIDNEYS , URETERS , URINARY BLADDER and URETHRA .
A human being has two Kidneys . They are located in the abdominal cavity . Each Kidneys contains thousands of tiny tubules which work like filters .
Blood is brought to the Kidneys through the arteries . as a blood flows through the kidney the tiny tubules filter the blood and separate waste from it . the end product of the process is URINE . it contains water waste materials filter out from the body .
Urine condensed waste such as urea ,Ammonia and uric acid . the urine flows through two long tubes called URETERS and collects in the URINARY BLADDER . urinary bladder is a storage sac for the urine . the urine ultimately is drain out of the body through the URETHRA .
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Excretion in human beings .
Our excretory system lies in abdominal are just below rib cage it consist of two pea shaped organs called kidneys , numerous filtering units called nephrons, Bowmans capsule, bundle of capillaries called glomerulus , Reneal pelvis , ureters , urinary bladder, urethra , cortex,medulla.
Kidneys are located on either side of spine in abdominal area. There is adrenal gland located on Each top of kidney. we need at least one kidney to survive.
If we take cross section of kidney we can see a dark red coloured region called medulla and faint red coloured region called cortex.
It also contains numerous filtering units called nephrons. If we take cross section of nephrons we can see cup shaped upper end called bowmans capsule.
These bowmans capsule contains no. of capillaries called glomerulus. Reneal artery brings unwanted waste material along with blood to glomerulus.
Glomerulus help in diffusion of these unwanted waste in Bowmans capsule.
This waste then move through long tube like structure where done nutrients such as water and amino acids gets reabsorbed by blood means reneal vein.
The unwanted waste which consist of nitrigeneous waste move along with urine and reaches Reneal pelvis through which it slides down in ureters and then move to urinary bladder.
In urinary bladder this urine gets stores once pressure is applied it gets through urethra and finally out of our body.
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