Question

• What is the functional and structural difference between cortical nephrons and juxtamedullary nephrons? Which is more vital to the functions of the kidney?

• What is the enteric nervous system? How is it related to the central nervous system? What would happen in a person if their ENS was not damaged?

Answer 1

Cortical nephrons	Juxtamedullary nephrons
Glomerulus in upper region of cortex	Glomerulus near junction of cortex and medulla
85 per cent of total nephrons	15 percent of nephrons
Small loop of Henle	long loop of Henle
Reduced Vasa recta	large network of vasa recta
Rate of filtration is low	rate of filtration is high
Function is excretion of waste products in urine	function is to concentrate urine

Cortical nephrons contribute about 85% of total nephrons and Juxtamedullary nephrons is only 15% , it help in concentration of urine. Cortical nephrons are more vital

Enteric Nervous System (ENS) is the intrinsic nervous system of gastrointestinal tract.

ENS is a large division of Peripheral Nervous System (PNS) it control GIT independantly of CNS.

Damage of ENS leads to gut dysfunction