Diameter of the renal afferent vessel is :-a)Same as that of efferentb)Smaller than that of efferentc)Larger than that of efferentd)There is no efferent vesselCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

The diameter of the renal afferent vessel is larger as compared to efferent vessel so that mire blood may flow in the efferent arteriole thereby increasing the blood pressure in glomerus.

Answer

The blood enters the glomerular capillaries from the afferent vessel and the blood undergoes ultrafiltration inside the Bowman's capsule. The purified blood leaves the Bowman's capsule through the efferent vessel. The diameter of the afferent vessel is larger than the efferent vessel in order to increase the pressure inside the glomerular capillaries, which in turn increases the efficiency of the filtration process.

Answer

Diameter of the renal afferent vessel is larger than that of efferent.

The renal afferent and efferent vessels are part of the renal circulation, which is responsible for the filtration and removal of waste products from the blood in the kidneys. The renal afferent vessel carries blood from the renal artery into the glomerulus, while the renal efferent vessel carries blood out of the glomerulus and into the renal vein.

Function of the Renal Afferent and Efferent Vessels

- The renal afferent vessel plays a crucial role in delivering blood to the glomerulus. It is responsible for maintaining the high blood pressure required for effective filtration in the kidneys.
- On the other hand, the renal efferent vessel carries blood out of the glomerulus, regulating the flow of blood and maintaining the glomerular filtration rate.

Difference in Diameter

The diameter of the renal afferent vessel is larger than that of the efferent vessel. This size difference is important for the proper functioning of the kidneys.

- The larger diameter of the afferent vessel allows for a higher flow rate of blood into the glomerulus. This is necessary for the efficient filtration of waste products, toxins, and excess water from the blood.
- The smaller diameter of the efferent vessel helps to maintain a high pressure within the glomerulus, which is important for the filtration process. By restricting the outflow of blood, the efferent vessel creates a back-up of blood within the glomerulus, increasing the pressure and ensuring effective filtration.

Importance of Diameter Difference

The difference in diameter between the renal afferent and efferent vessels plays a crucial role in maintaining the balance of filtration and reabsorption in the kidneys.

- If the diameter of the efferent vessel were the same as or larger than that of the afferent vessel, the pressure within the glomerulus would decrease, resulting in decreased filtration. This could lead to inadequate removal of waste products and a decrease in overall kidney function.
- Conversely, if the diameter of the afferent vessel were smaller than that of the efferent vessel, the pressure within the glomerulus would increase, potentially causing damage to the delicate filtering structures within the kidneys.

Summary

In summary, the diameter of the renal afferent vessel is larger than that of the efferent vessel. This size difference is essential for maintaining the proper functioning of the kidneys, allowing for efficient filtration of waste products while maintaining a high pressure within the glomerulus.

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