Quick Answer: What Is The Role Of The Cortical Vs Juxtaglomerular Nephrons?

What is the difference between a cortical and Juxtamedullary nephron?

Cortical nephrons have a short loop of Henle, which penetrates only the outer renal medulla.

Juxtamedullary nephrons have a long loop of Henle extending deep into the renal medulla.

The juxtamedullary nephrons concentrate or dilute urine..

What percent of nephrons are cortical?

85%In humans, about 85% of the nephrons are cortical nephrons and about 15% are juxtamedullary nephrons.

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 juxta glomerular apparatus?

The juxtaglomerular apparatus is the location of renin-secreting cells and the macula densa and lies at the junction between the loop of Henle and the distal nephron at which the tubule comes in close proximity to the afferent arteriole.16.

Why Juxtamedullary nephrons are more important in osmoregulation?

The kidneys are the main osmoregulatory organs in mammalian systems; they function to filter blood and maintain the osmolarity of body fluids at 300 mOsm. … Cortical nephrons are found in the renal cortex, while juxtamedullary nephrons are found in the renal cortex close to the renal medulla.

What are the 5 major parts of the cortical nephron?

The tubule has five anatomically and functionally different parts: the proximal tubule, which has a convoluted section the proximal convoluted tubule followed by a straight section (proximal straight tubule); the loop of Henle, which has two parts, the descending loop of Henle (“descending loop”) and the ascending loop …

What are the 2 types of nephrons?

There are two types of nephrons— cortical nephrons (85 percent), which are deep in the renal cortex, and juxtamedullary nephrons (15 percent), which lie in the renal cortex close to the renal medulla.

What is the function of the Juxtaglomerular apparatus?

The juxtaglomerular apparatus functions to maintain blood pressure and to act as a quality control mechanism to ensure proper glomerular flow rate and efficient sodium reabsorption. The urethra extends from the bladder to the surface of the body. It consists of an epithelium-lined lumen and a smooth muscle layer.

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 do Juxtaglomerular cells secrete?

The juxtaglomerular cells secrete renin, and as specialised smooth muscle cells surrounding the afferent arteriole also have the capacity to affect the perfusion of the glomerulus.

Which structure is most important for urine concentration?

Which structure is most important for urine concentration? Capsular hydrostatic pressure is the chief force pushing water and solutes out of the blood and across the filtration membrane.

What is the function of cortical nephrons?

The superficial cortical nephrons have peritubular capillaries which branch off the efferent arterioles, and provide nutrients to the epithelial cells which are present there. In addition to serving the epithelial cells, these capillaries supply the blood for reabsorption and secretion.

What is Vasa recta in nephron?

The vasa recta capillaries are long, hairpin-shaped blood vessels that run parallel to the loops of Henle. The hairpin turns slow the rate of blood flow, which helps maintain the osmotic gradient required for water reabsorption. Illustration of the vasa recta which run alongside nephrons.

Is Vasa recta same as peritubular capillaries?

The main difference between vasa recta and peritubular capillaries is that the vasa recta are the blood capillaries that surround the loop of Henle in the juxtamedullary nephrons. But, peritubular capillaries are the blood capillaries that surround the PCT and DCT of the cortical nephrons.

Is nephron a cell?

are nephrons cells or tissues? … The nephron is the functional unit of the kidney that is made up of cells. So, it is tissue. Comment on Abid Ali’s post “The nephron is the functional unit of the kidney t…”