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Excretary System
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NH3-fish
Urea-amphebians
Uric Acid-birds
NH3+Urea+Uric acid – man

Kidney
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115-170 grams
Bean shaped
Outer part-cortex
Inner part-medulla

Nephrons
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Nephrons-structural and functional unit of kidney. Size 3cm

Other escretary system parts
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Ureter
Urinary bladder
Urethra

Chemical reaction
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De-Amination cycle -Protien-NH3
Orinthin cycle NH3-Urea
Liver converts NH3 to Urea

Physical reaction
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Ultra filtration
Re-Absorbtion
Tubular Secretion

Structure of neuron
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Afferent Artiole-impure blood
Efferent Artiole-pure blood
Glomerulas
Bowman’s capsule- Urea vitamins minerals water.
PCT Proximal Convoluted tubule
Loop of Henley
DCT Distil Convoluted tubule
Collecting duct

Function
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PCT- Carries vitamins.
Loop of Henley- Concentrated blood.
DCT- Blood to Urea.
Collecting duct- Urea+ NH3+Uric acid send to Uriter

Diseases
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Uriac- urea mixes with urine
GOUT- urine mixes with
elbow joint fluid

Machine
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Dialysis machine:-
Connects to vein of patients.
Sends Dialysis fluid =Water 96% + proteins 3%+ other substances. 1% to veins in body temperature.

Kidney transplantation
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Can be done ✅ with living or dead person to a healthy person.
48 hours before Brain death.
Most successful

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