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DRAWING DIAGRAMS - PARTS - PROCEDURE

LONGITUDINAL SECTION OF KIDNEY Internal Structure of KIDNEY

1. L.S of kidney shows two distinct regions.

They are : 1. Cortex
2. Medulla
2. The outer region of kidney is deep red in colour, called Cortex.
3. The inner region of kidney is light red in colour, called Medulla.
4. Each kidney is made up of about 1.3-1.8 millions of microscopic
and thin tubular, functional units called Nephrons or Uriniferous
Tubules.
5. Nephrons are responsible for urine formation.
Hence those reasons “Nephrons are the structural and functional
unit of the kidney.

NEPHRON Structure of Nephron

1. Nephron is the structural and functional unit of the kidney. How to draw
2. Each kidney contains about 1.3 to 1.8 millions of nephrons. pl. scan QR
3. Each Nephron contains two parts. They are :
1. Malpighian body 2. Renal tubule/Nephric duct
4. Malpighian body contains two parts. They are :
1. Bowman’s capsule 2. Glomerulus
5. Bowman’s capsule is a two layered cup with space in between two layers.
6. Inside the cup of Bowman’s capsule, there is a bunch of capillaries is called glomerulus.
7. Glomerulus develops from afferent arteriole and it gives rise to efferent arteriole.
8. The diametre of efferent arteriole is less than the afferent arteriole.
9. Renal tubule arises from Bowman’s capsule.
10. It contains three parts. They are :1. PCT [Proximal Convoluted tubule]
2. Loop of Henle 3. DCT [Distal Convoluted tubule]
11. PCT is the first part of Renal tubule arises from Bowman’s capsule.
12. Henle loop is ‘U’ shaped present between PCT and DCT.
RAJU’S NATURAL SCIENCE ACADEMY
13. DCT opens into collecting tube.
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