Question: What Structural Feature Would Allow You To Distinguish Juxtamedullary Nephrons From Cortical Nephrons?

What type of nephron is the glomerulus connected to?

A nephron consists of a renal corpuscle (glomerulus) connected to a complicated and twisted tubule that finally drains into a collecting duct (Figs.

1.2 and 1.3).

By the location of renal corpuscles within the cortex, three types of nephron can be distinguished: superficial, midcortical, and juxtamedullary nephrons..

Which is the characteristic feature of Juxtamedullary nephron?

Juxtamedullary nephrons start low in the cortex near the medulla and have a long loop of Henle which penetrates deeply into the renal medulla: only they have their loop of Henle surrounded by the vasa recta.

What is the function of cortical nephrons?

Although both cortical and juxtamedullary nephrons regulate the concentrations of solutes and water in the blood, countercurrent multiplication in the loops of Henle of juxtamedullary nephrons is largely responsible for developing the osmotic gradients that are needed to concentrate urine.

Why is Vasa recta absent in cortical nephron?

The proximity between the Henle’s loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This gradient is mainly caused by NaCl and urea. … This mechanism helps to maintain a concentration gradient in the medullary interstitium.

What is the main function of vasa recta?

Vasa Recta Function Not only do the vasa recta bring nutrients and oxygen to the medullary nephron segments but, more importantly, they also remove the water and solute that is continuously added to the medullary interstitium by these nephron segments.

Is the Vasa recta part of the nephron?

(Latin: vasa, “vessels”; recta, “straight”). They lie parallel to the loop of Henle. These vessels branch off the efferent arterioles of juxtamedullary nephrons (those nephrons closest to the medulla). They enter the medulla, and surround the loop of Henle.

What is Juxtaglomerular nephron?

The juxtaglomerular apparatus (also known as the juxtaglomerular complex) is a structure in the kidney that regulates the function of each nephron, the functional units of the kidney. The juxtaglomerular apparatus is named because it is next to (juxta-) the glomerulus.

Which substances are not filtered through the kidneys?

Filterable blood components include water, nitrogenous waste, and nutrients that will be transferred into the glomerulus to form the glomerular filtrate. Non-filterable blood components include blood cells, albumins, and platelets, that will leave the glomerulus through the efferent arteriole.

How do cortical nephrons and Juxtamedullary nephrons differ structurally?

The major difference between cortical nephrons and juxtamedullary nephrons are the length of the loops of Henle. In cortical nephrons, the glomeruli, proximal and distal convoluting ducts, and loops of Henle stay limited to the cortex. In juxtamedullary nephrons, they extend into the medulla.

Which is true about the difference between cortical and Juxtamedullary nephrons?

Cortical nephrons have a glomerulus located nearer to the outer parts of the cortex and their loops of Henle are short. Juxtamedullary nephrons have a glomerulus near the junction of the cortex and medulla and their loops of Henle penetrate deep into the medulla.

What are the 2 types of nephrons?

Key PointsKidneys contain two types of nephrons, each located in different parts of the renal cortex: cortical nephrons and juxtamedullary nephrons.A nephron comprises a renal corpuscle, a renal tubule, and the associated capillary network.More items…•

How many nephrons are in each kidney?

Based on autopsy specimens from individuals representing various ethnic groups, a large variation in nephron number exists in the “normal” adult human kidney, such that each kidney contains anywhere from 200,000 to over 1.8 million nephrons.

Where are nephrons located?

The nephron is the structural and functional unit of the kidney. There are about two million nephrons in each kidney. Nephrons begin in the cortex; the tubules dip down to the medulla, then return to the cortex before draining into the collecting duct.

Is Vasa recta present in cortical nephron?

The superficial cortical nephrons have peritubular capillaries which branch off the efferent arterioles, and provide nutrients to the epithelial cells which are present there. … The juxtamedullary nephrons have a special structure within the peritubular capillaries, called the vasa recta.

What is the role of the cortical vs Juxtaglomerular nephrons?

The major part of the regulatory and excretory functions of the human body is carried out by the cortical nephrons. The juxtamedullary nephrons concentrate or dilute urine. As a result of the short loop of Henle, the vasa recta of the cortical nephrons is small.