Juxta Medullary Nephron

Cortical Nephrons.

Their glomeruli are present close to the inner margin of the cortex.

Their glomeruli are located in the outer cortex.

They have long loops of Henle.

Their loops of Henle are relatively short.

They are present deep in the medulla.

They extend to a short distance into the medulla.

They are associated with vasa rectae.

Vasa rectae are absent.

The juxta glomerular cells secrete renin.

Cortical glomerular cells do not secrete renin.

Proximal
convoluted
ubule

Distal convoluted tubule

It has brush border epithlium. 

It has few short microvilli. 

Active absorption of whole of glucose, most of amino acids and vitamin C. It also reabsorbs 70% of Na, 75% K and large amount of Ca⁺². Urea is also reabsorbed.

Active absorption of some Na⁺, C1^–ions and water.

Ureters

Urethra

These are 25-30 cm long.

These are two

These extend from the kidneys to bladder.

These conduct only urine.

These collect urine from kidneys and pass into urinary bladder.

It is 4 cm long in female and 20 cm long in male.

It is one.

It extends from bladder to outside.

It contains urine and seminal fluid in male.

It collects urine from urinary bladder and pass it outside.