How does vasa recta differ from peritubular capillaries?
Peritubular capillaries surround the cortical parts of the proximal and distal tubules, while the vasa recta go into the medulla to approach the loop of Henle.
What blood vessel do the peritubular capillaries and the vasa recta arise from?
Vasa recta and peritubular capillaries are the two types of blood capillaries that arise from the efferent arteriole. Both of these structures provide blood to the distal parts of the nephron.
What is 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 is vasa recta and its function?
Vasa recta is the minute vessel of the peritubular network which runs parallel to the loop of Henle. It maintains the concentration gradient in the medullary interstitium and helps to maintain the osmolarity of blood.
What is the vasa recta and where is it found?
In the blood supply of the kidney, the vasa recta renis (or straight arteries of kidney, or straight arterioles of kidney) form a series of straight capillaries in the medulla. They lie parallel to the loop of Henle.
Is the vasa recta part of the nephron?
Whereas the peritubular capillaries surround the cortical parts of the tubules, the vasa recta go into the medulla and are closer to the loop of Henle, and leave to ascend to the cortex….Vasa recta (kidney)
| Vasa recta | |
|---|---|
| A nephron, the vasa recta are labeled arteriolae rectae | |
| Details | |
| System | Circulatory, Excretory |
| Artery | efferent arteriole |
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.
What do you mean by vasa recta?
1 : numerous small vessels that arise from the terminal branches of arteries supplying the intestine, encircle the intestine, and divide into more branches between its layers.
Are there vasa recta in cortical nephron?
Cortical nephrons have a short loop of Henle, which penetrates only the outer renal medulla. As a result of the short loop of Henle, the vasa recta of the cortical nephrons is small. The long loop of Henle of the juxtamedullary nephrons is surrounded by a large vasa recta network.
What is vasa recta in nephron?
The vasa recta, the capillary networks that supply blood to the medulla, are highly permeable to solute and water. A substantial increase in vasa recta blood flow dissipates the medullary gradient. Alternatively, decreased blood flow reduces oxygen delivery to the nephron segments within the medulla.
What is the difference between peritubular capillaries and vasa recta?
On the other hand, juxtamedullary nephrons, with their longer loops of Henle, create a hyperosmolar gradient through counter current mechanism, that allows for the production of concentrated urine. The efferent arterioles divide into peritubular capillaries in cortical nephrons and become vasa recta in juxtamedullary nephrons.
Where does the vasa recta get its oxygen?
Vasa recta are the special type of peritubular capillaries that feed medulla of the kidney with oxygen and nutrients. They specifically arise from the efferent arteriole of juxtamedullary nephrons and wind around their Henle loops.
Where are vasa recta located in the kidney?
In brief, vasa recta are one of the two types of blood capillaries arising from the efferent arterioles of the nephron. They are less abundant and surround the loop of Henle of the juxtamedullary nephrons. Hence, they occur in the medulla of the kidney of only birds and mammals, concentrating urine.
How are the vasa recta related to the medulla?
The vasa recta, the capillary networks that supply blood to the medulla, are highly permeable to solute and water. As with the loop of Henle, the vasa recta form a parallel set of hairpin loops within the medulla (see Chapter 2 ).
