Vasa

Difference Between Vasa Recta and Peritubular Capillaries

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.

  1. What do the Vasa recta capillaries do?
  2. What is meant by Vasa recta?
  3. What is the difference between Juxtamedullary and cortical nephron?
  4. What is the Vasa recta and where is it found?
  5. Where do the Vasa recta drain?
  6. Why is Vasa recta absent in cortical nephron?
  7. Is Vasa recta part of peritubular capillaries?
  8. What is the function of the Vasa recta quizlet?
  9. Is Vasa recta present in cortical nephron?
  10. What are the 5 major parts of the cortical nephron?
  11. Why are there two types of nephrons?
  12. How many nephrons are in each kidney?

What do the Vasa recta capillaries do?

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 meant by Vasa recta?

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.

What is the difference between Juxtamedullary and cortical nephron?

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.

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.

Where do the Vasa recta drain?

Efferent arteries that arise from glomeruli near the medulla give rise to arterial vasa recta (spuria) through which the medulla receives most of its blood supply. Arterial vasa recta turn back into venous vasa recta that drain into arcuate veins at the corticomedullary junction.

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.

Is Vasa recta part of 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. ... The higher osmolarity of the blood in the peritubular capillaries creates an osmotic pressure which causes the uptake of water.

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.

Is Vasa recta present in cortical nephron?

Vasa recta is well developed in cortical nephrons.

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 ...

Why are there two types of nephrons?

There are two types of nephrons: Superficial cortical nephrons, which have their glomeruli in the outer cortex. They have shorter loops of Henle, which dip only into the outer medulla. ... They have larger glomeruli, and thus have higher glomerular filtration rates (GFR).

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.

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