The main difference in between vasa recta and also peritubular capillaries is the the vasa recta are the blood capillaries that surround the loop the Henle in the juxtamedullary nephrons. But, peritubular capillaries space the blood capillaries that surround the PCT and DCT that the cortical nephrons. Furthermore, vasa recta take place in the medulla of the kidney if peritubular capillaries happen in the cortex. Besides, vasa recta offer as osmotic exchangers for the concentration the urine while peritubular capillaries supply the blood for reabsorption and secretion.  

In brief, vasa recta and also peritubular capillaries room the two species of blood capillaries that arise indigenous efferent arterioles. Generally, they involve 2 of the four physiological functions of the nephron: reabsorption and also secretion. 

Key areas Covered 

1. What space Vasa Recta – Definition, Anatomy, Function2. What space Peritubular Capillaries – Definition, Anatomy, Function3. What space the Similarities in between Vasa Recta and Peritubular Capillaries – outline of typical Features4. What is the Difference between Vasa Recta and Peritubular Capillaries – comparison of an essential Differences

Key Terms 

Efferent Arteriole, Loop of Henle, Nephron, Peritubular Capillaries, Vasa Recta

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What room Vasa Recta 

Vasa recta space the form of blood capillaries the arise native the efferent arterioles, neighboring the loop the Henle the the juxtamedullary nephrons. Juxtamedullary nephrons only happen in the kidney of birds and mammals and are responsible for the manufacturing of focused urine under high physical activity or under unfavorable eco-friendly conditions. Moreover, long and also straight vasa recta run parallel come the loop that Henle, which wake up in the medulla the the kidney. 




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Figure 1: Vasa Recta and also Peritubular Capillaries basic Anatomy


Besides, in ~ the descending part of the vasa recta, the reabsorption of salt chloride and also urea right into the blood wake up while secreting water into the loop that Henle native the blood. On the contrary, in ~ the ascending part of the vasa recta, both sodium chloride and also urea room secreted right into the loop the Henle when reabsorbing water. Moreover, the blood flows really slowly v the right blood capillaries of the vasa recta due to the fact that they have a hairpin rotate in the medulla. This, in turn, stays clear of the washing out of the concentration gradient while preserving a countercurrent exchange. An ext importantly, the maintain of a concentration gradient is responsible for the manufacturing of focused urine.  

What room Peritubular Capillaries 

Peritubular capillaries are the form of blood capillaries that arise native the efferent arterioles, neighboring the PCT and DCT the the cortical nephrons. Here, the loop the Henle the the cortical nephrons does not dip past the cortex the the kidney. Also, the bulk of the nephrons the the kidney room cortical nephrons. Furthermore, cortical nephrons room responsible for the production of dilated urine under typical physiological conditions. Therefore, the main function of this capillaries is to experience reabsorption and secretion in ~ the distal parts of the nephron.


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Figure 2: Nephron basic Function




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Functionally, glucose, amino acids, and also ions, which have to remain in the body, undergo reabsorption through active transport, second active transport, and also transcytosis in the peritubular capillaries. However, the ions and also excess water that requirements to be eliminated from the human body undergo secretion from the blood in the peritubular capillaries right into the PCT and DCT, sending out them towards the bladder.  


Similarities between Vasa Recta and also Peritubular Capillaries  

Vasa recta and peritubular capillaries room the two types of blood capillaries that arise native the efferent arteriole.  Both of these structures administer blood to the distal components of the nephron.  Besides, they involve two of the four physiological features of the nephron; reabsorption and also secretion. 

Difference between Vasa Recta and Peritubular Capillaries 

Definition 

Vasa recta refer to among a collection of long loops the thin-walled blood vessels, which dip under alongside the loop of Henle in the vertebrate kidney. But, peritubular capillaries describe the tiny blood vessels offered by the efferent arteriole, which take trip the alongside nephrons allowing reabsorption and also secretion in between blood and also the inside lumen the the nephron. 

Occurrence 

Vasa recta surround the loop that Henle in the juxtamedullary nephrons, if peritubular capillaries surround the PCT and DCT the the cortical nephrons.  

Depth  

Moreover, vasa recta occur in the medulla that the kidney, when peritubular capillaries take place in the cortex.  

Abundance 

Around 15% the capillaries emerging from the efferent arterioles space vasa recta, while approximately 85% the capillaries developing from the efferent arterioles are peritubular capillaries. 

Activity 

Vasa recta work during periods of high activity, while peritubular capillaries work throughout normal activity. 

Function 

Furthermore, vasa recta serve as osmotic exchangers for the concentration of urine, when peritubular capillaries supply the blood for reabsorption and secretion.  

Importance 

Also, vasa recta only occur in the kidney the birds and also mammals, enabling concentrating urine mainly in dryness conditions. But, peritubular capillaries are important in the manufacturing of dilated urine under common conditions. 

Conclusion 

In brief, vasa recta are one of the two species of blood capillaries occurring from the efferent arterioles that the nephron. Lock are less abundant and also surround the loop that Henle that the juxtamedullary nephrons. Hence, they occur in the medulla the the kidney of just birds and also mammals, concentrating urine. In contrast, peritubular capillaries space the other kind of blood capillaries, arising from the efferent arterioles. They space abundant creates of such blood capillaries and surround the PCT and DCT that the cortical nephrons. In addition, the main duty of peritubular capillaries is to develop dilated to pee under normal conditions. Therefore, the main difference between vasa recta and also peritubular capillaries is their depth that occurrence and function. 

References:

1. “Medical Physiology/Renal Physiology.” medical Physiology/Renal Physiology – Wikibooks, Open books for an open up World, accessible Here.2. “Straight Arterioles of Kidney.” Wikipedia, Wikimedia Foundation, 25 Sept. 2019, easily accessible Here.

Image Courtesy:

1. “Figure 41 03 03” by CNX OpenStax (CC by 4.0) via Commons Wikimedia 2. “Kidney nephron molar move diagram” through M•Komorniczak (CC by 3.0) via Commons Wikimedia