Question

What are the nephrons ? Write also about its part and how many types of nephrons?

Answer 1

Answer...

☆☆ NEPHRONS ☆☆

▪ Nephrons are the structural and functional unit of kidney.

▪ Each Nephrons has two parts : GLOMERULUS & RENAL TABULE.

¤ Glomerulus : A tuft of capillaries formed by afferent ateriole (a fine branch of renal artery). Blood from the Glomerulus is carried away by an Efferent Arteriole.

¤ Renal Tubule : It begins with a double walled cup-like Bowman's Capsule, which encloses the Glomerulus.

▪ Types of Nephrons :-

¤ CORTICAL NEPHRONS [85%] ----- In this, the Henle's loop short and extends only very time little into the meduila. Vasa recta is absent or highly reduced.

¤ JUXTAMEDULLARY NEPHRONS [ 15%] ------ In this, Henle's loop is long and runs deep into medulla. Vasa Recta Present.

Answer 2

HEYA GM

- NEPHRON :- It is the structural and functional unit of kidney..

- Types of NEPHRON

@1) Cortical Nephron ( 85-90 %)

- It's loop of henle's is maximum present in the cortex
- It is known to work in EVERYDAY FUNCTION ( means regular filtration process).

- The Vasa Recta is ABSENT

- IT maintains a concentration of 300 OSM

@2) Juxtamedullary Nephron ( 10-15%)

- the maximum part of its loop of henle lies deeply in the Medulla

- Vasa Recta is PRESENT

- It is known to work in special conditions when there is water deficiency in our body or any internal defect in mechanism of our body..

## Parts of NEPHRON

1) Glomerulas:- It is a bunch of Capillaries which brings blood to Nephron

2) Bowman's Capsule:- it is a double walled cup shaped structure which contains the GLOMERULUS..
- It creates and membrane for ULTRA FILTRATION

3) Loop of Henle

- It is a main site for reabsorption and secretion of electrolytes and water in Medullary Interstitium..

4) PCT (IT HAS MICROVILLI)

- IT IS A MAIN SITE FOR REABSORPTION OF NA+, WATER, BICARBONATE..

5) DCT

- IT SECRETS H + AND AMMONIUM ION IN THE GLOMERULAR FILTRATE

Hope it helps you...