Urine formation|| physiology of urine|| for Neet, Nursing,BAMS,medical exams
Waste is excreted from the human body, mainly in the form of urine. Our kidneys play a major role in the process of excretion. Constituents of normal human urine include 95 per cent water and 5 per cent solid wastes. It is produced in the nephron, which is the structural and functional unit of the kidney. Urine formation in our body is mainly carried out in three phases namely
Glomerular filtration
Reabsorption
Secretion
Mechanism of Urine Formation
The mechanism of urine formation involves the following steps:
Glomerular Filteration
Glomerular filtration occurs in the glomerulus where blood is filtered. This process occurs across the three layers- the epithelium of Bowman’s capsule, the endothelium of glomerular blood vessels, and a membrane between these two layers.
Blood is filtered in such a way that all the constituents of the plasma reach the Bowman’s capsule, except proteins. Therefore, this process is known as ultrafiltration.
Reabsorption
Around 99 per cent of the filtrate obtained is reabsorbed by the renal tubules. This is known as reabsorption. This is achieved by active and passive transport.
Secretion
The next step in urine formation is tubular secretion. Here, tubular cells secrete substances like hydrogen ions, potassium ions, etc into the filtrate. Through this process, the ionic, acid-base and the balance of other body fluids are maintained. The secreted ions combine with the filtrate and form urine. The urine passes out of the nephron tubule into a collecting duct.
Urine
The urine produced is 95% water and 5% nitrogenous wastes. Wastes such as urea, ammonia, and creatinine are excreted in the urine. Apart from these, the potassium, sodium and calcium ions are also excreted.
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Happy new year sir
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Aapki class bhot achi h sir
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Happy new year 😀🎉🎉😊
@JyotiKumari-bb7tu
3 ай бұрын
Same to you sir ji 🎉💖
Wow Guruji 🙏 best teaching 👍 and aapki sayri very motivated , bahut achcha hai ....
Bahut accha kiye sir jo aap urin formation pe vidio banaye
@miniattempteclasses
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Thanks keep watching
Kasam se bohot Sara videos dekh ne ki badh ye perfect video Mila
Thank you sir aapki classes bhot achi hoti h ache s samjh aata h
TQ so much sir ❤....... Bhut jyada ache s smjhate ho ap sir TQ so much.....
Wow Guruji 🙏 aapki shayari Very motivated our aapki teaching best Guruji 🙏 👍
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Thank you sir aapka lecture mujhe bhahut samaj aata hai
very nice continually.......
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Nice video
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I'm proud to be your Pakistani student from Punjab. Bilated happy New Year 🙂. May I bless you with lot of subscribers. Respect ❤️ Sir.
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Xqq
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Sir regular classes rakho plz🙏🙏....aapki classes bahut achhi h......
I impress Your motivation quotes are all very valuable words....
you are the best teacher ❤❤
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Wow sir nice explain❤❤
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Excuse me sir? Plz can u make video on mechanism to maintain acid base balance. :Respiratory system :Urinary system :Buffer mechanism
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Thanks and welcome
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☺☺very nice sir
Sir, if a man drank wine and after a few minutes he took drug. How long it will be in his body or blood?
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Good explanation sir
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Keep watching
Sir video on physiology of sight plzz
Sir please research or psychology pr bhi vidio bnay
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Thank You Sir For Giving A Lot Of Knowledge To Us......🤍
make a vdeo on countercurrent mechanism
Nice sir ji
Thank you sir
Sir hum urine formation main nephron ka fig bna skte h only... Mtlb jese aapne alg alg part dikhaye h nephron k .. hum bs nephron bna skte h
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Same to you dear
Happy new year Sir 🙏
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Happy new year
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Keep watching
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Happy new year Sir
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You too!!
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Happy new year
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Nyc video
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Thank you so much 😀
Tq sir 🙏
nice
Happy new year sir regular class karo sir
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I will try my best
Tq sir❤❤
Sir ek bat btaye ki agar ye question exam me aaye to kya figure bnana pdega?
Family k sath me lectures ko share karne se kya hoga Kya ve bhi dubara se study krenge
give the topic on Formation of urine
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Sir plz make a video on *Water balance* 🙏
@miniattempteclasses
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Very soon
Sir nursing foundation elimination need ka vedeo ni h ky ???
Wish u all happy new year ✨✨🎉🎉
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Same to you
Sir I think it is २ to ५ litre per day
thanks sir
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Most welcome
Ager sir, hamara urine pinkish colour ka aata hai toh woh disease condition hogi yaa nhi...?
Gynaecology ka class start kariye sir Hormones class Plz sir
Wishing you a very very happy new year sir. More energy and more enthusiasm in this new year will works towards the students welfare. I am thankful to you sir.
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Happy new year
@kajalkumarikajalkumari1738
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Skeletal system ka topy batana sir
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Sir please blood group system ki class karwa do please sir
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Sir aise hi type se blood ki video h kya
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Yes
Sir aap ki mobile number baat kar ni h. Aap ka koe bsc nursing class app h kya or other subject be
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Bsc mlt class bolo sir please
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Bhai de do yrrr 😢
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Yss
Sar aap saath saath mein Hindi me dala Karen please
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Bahut achhe study karbate sir number send kar dijiye
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@its.badalthakur.01
2 ай бұрын
Arey yaar to aap Google translate bhi to kar sakte hai 😅
S
Thanku.sir.
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Nice video
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Happy New year Sir 💐💝🎈💐
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Same to you dear