juxtamedullary

The efferent arterioles of the juxtamedullary glomeruli are much different.

A juxtamedullary nephron is a type of nephron, found only in birds and mammals.

Connecting tubules of some juxtamedullary nephrons may arch upward, forming an arcade.

The efferent arterioles of the juxtamedullary nephron drain into the vasa recta.

However, in most depictions of the nephron, it is a juxtamedullary nephron which is depicted.

Cortical nephrons have a shorter loop of Henle compared to juxtamedullary nephrons.

Some connecting tubules, usually associated with juxtamedullary nephrons, arch upwards before reaching the cortical collecting ducts.

It then moves into the vasa recta, which are only found in juxtamedullary nephrons and not cortical nephrons.

The longer loop of Henle in juxtamedullary nephrons create a hyperosmolar gradient that allows for the creation of concentrated urine.

In the mammalian kidney about 15% of glomeruli lie close to the boundary between the renal cortex and renal medulla and are known as juxtamedullary glomeruli.

In mammals, an elegant rete mirabile in the efferent arterioles of juxtamedullary glomeruli is important in maintaining the hypertonicity of the renal cortex.

These vessels branch off the efferent arterioles of juxtamedullary nephrons (those nephrons closest to the medulla), enter the medulla, and surround the loop of Henle.

Efferent arterioles of juxtamedullary nephrons (i.e., the 15% of nephrons closest to the medulla) send straight capillary branches that deliver isotonic blood to the renal medulla.

Desert mammals have longer and more deeply inset nephrons, as well as smaller and fewer cortical and juxtamedullary glomeruli (glomeruli being capillary networks where both fluid and waste are extracted from blood).

In other words, a juxtamedullary nephron is one where the renal corpuscle is close to the medulla, and the proximal convoluted tubule and its associated loop of Henle occur at a deep position compared to most other nephrons.

Two general classes of nephrons are cortical nephrons and juxtamedullary nephrons, both of which are classified according to the length of their associated Loop of Henle and location of their renal corpuscle.