Excretory System of Human
Excretory System – The Metabolism Of Carbohydrates And Fats In The Body Produces Carbon Dioxide And Water Vapour.
Excretory Substances Such As Nitrogen Are Formed From The Metabolism Of Proteins. For Example, Ammonia, Urea And Uric Acid.
Excretory Substances Such As Carbon Dioxide Are Removed From The Body Through The Lungs.
Excretory Substances Such As Sodium Chloride Are Removed From The Body Through The Skin.
Excretory Substances Such As Urea Are Removed From The Body By The Kidneys.
Types Of Excretory
There Are Three Types Of Emissions
Ammonotelic Excretory
In This Type Of Excretory Excretion, Ammonia Is Removed From The Body As An Excretory Substance.
Animals In Which This Type Of Excretion Is Found Are Called Ammonotelic Animals.
Most Of The Water Is Required To Remove This Type Of Excretory Material.
Ammonia Is Considered The Most Toxic Excretory Material.
This Type Of Excretion Is Found In Aquatic Animals.
Ureotelic Excretory
In This Type Of Excretion, Urea Is Removed From The Body As An Excretory Substance.
This Type Of Excretion Is Found In Some Amphibians And Mammals. For Example, Frog, Man, Deer, Rabbit Etc.
Uricotellic Excretory
In This Type Of Excretion , Uric Acid Is Formed As A Substance Of Excretion.
The Least Amount Of Water Is Required To Excrete Uric Acid As It Is The Least Toxic Excretory Substance.
This Type Of Excretory Excretion Is Found In Birds And Reptiles. For Example, Pigeon, Peacock, Snake, Crocodile, Tortoise Etc.
Frog Is One Such Animal In Which All Three Types Of Excretion Are Found.
The Larva Of A Frog Is Called A Tadpole. In Which Ammonotelic Type Of Excretion Is Found.
Euryotelic Type Of Excretion Is Found In Adult Frog.
When The Frog Is Dormant, It
Uricothelic Type Of Excretion Is Found.
There Are Two Types Of Dormancy Stage In Frogs, Which Is Called The Summer Dormant Stage ( Aestivation ) And The Cold Dormant Stage Is Called Hibernation.
Urea Is Produced In The Liver In The Human Body.
Whereas Urea Is Filtered Out Of The Body By The Kidney.
The System That Removes Harmful Substances From The Body Is Called Excretory System. For Example- Skin, Tear Gland, Kidney Etc.
The Most Important Excretory Organ Of Our Body Is Kidney.
The Unit Of Kidney Is ‘ Nephron ‘ .
Urine Is Made In The ‘Nephron’ .
The Storage Of Urine Takes Place In The ‘ Urinary Bladder ‘ .
Urine Consists Of 95% Water And The Rest Urea, Uric Acid, Creatinine, Hipuric Acid, Common Salts, Etc.
Uric Is The Largest Amount In Urine After Water.
The Yellow Color Of Urine Is Due To ” Creatinine ” .
The Formation Of Urine In A Normal Human Is About 100 Liters In 24 Hours, But Lastly Only 1-Liter Of Urine Is Excreted.
The Rest Of The Water Is Reabsorbed.
Dialysis Is Used For Kidney Failure.
Filtration Of Urine Takes Place In The ‘ Baumann Capsule ‘ ( Bowmann ( A Scientific Name) Capsul).
Kidney
Two Kidneys Are Found In Human Beings Which Are Called Right And Left Kidney.
The Weight Of A Human Kidney Is About 300 To 350 Grams.
The Maximum Amount Of Water Is Found In The Urine Filtered By The Kidney , While The Maximum Amount Of Urea Is Found In The Form Of Organic Matter.
The Yellow Color Of Urine Is Due To The Presence Of Urochrome Substance.
The PH Value Of Urine Is 6. That Is, Urine Is Acidic In Nature.
Vitamin C Is Excreted Out Of The Body Through Human Urine.
Ammonia Is The Most Toxic Excretory Substance While Uric Acid Is The Least Toxic Excretory Substance.
Urea In Humans, Urea Is Formed In The Liver From Ammonia, Which Is Separated From The Blood By The Kidneys .
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