Quick Answer: What Does Vasa Recta Mean?

Is Vasa recta 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.

About one-fifth of the blood plasma is filtered as the blood passes through the glomerular capillaries; four-fifths continues into the peritubular capillaries..

What is Vasa recta and its function?

Vasa Recta Function The vasa recta, the capillary networks that supply blood to the medulla, are highly permeable to solute and water. … The ability of the vasa recta to maintain the medullary interstitial gradient is flow dependent. A substantial increase in vasa recta blood flow dissipates the medullary gradient.

Where is the Vasa recta located in the kidney?

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.

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 difference between Vasa recta and 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.

Where do kidneys lie?

The kidneys lie retroperitoneally (behind the peritoneum) in the abdomen, either side of the vertebral column. They typically extend from T12 to L3, although the right kidney is often situated slightly lower due to the presence of the liver. Each kidney is approximately three vertebrae in length.

Do peritubular capillaries have fenestrations?

Cortical peritubular capillaries are fenestrated, with large surface areas and high hydraulic conductivity. … Dilution of the interstitium in the vicinity of the capillary wall with protein-free fluid both lowers interstitial oncotic pressure and raises interstitial hydraulic pressure.

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 role do the Vasa recta play in urine formation?

What role do the vasa recta play in urine formation? … The vasa recta protect the medullary osmotic gradient by preventing rapid removal of salt. C. The vasa recta receive the dilute filtrate from the distal convoluted tubule.

What is the role of the vasa recta in blood pressure regulation?

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.

What is the function of the Vasa recta quizlet?

What is the function of the vasa recta? It maintains the concentration gradient established by the loop of Henle.

What does the Vasa recta contain?

The vasa recta of the kidney, (vasa rectae renis) are the straight arterioles, and the straight venules of the kidney, – a series of blood vessels in the blood supply of the kidney that enter the medulla as the straight arterioles, and leave the medulla to ascend to the cortex as the straight venules.