why there is different in lumen size of affernt arteriol and efferent arteriol of kidney.explain it.
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Answer:
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Explanation:
Whats the difference between the efferent arteriole and afferent?
Anatomy & Physiology Digestive and Excretory Systems Excretory System
1 Answer
Evan · Kate M.
Mar 23, 2018
The afferent arteriole brings blood to the glomerulus and the efferent arteriole carries blood away from the glomerulus.
Explanation:
The afferent arteriole is the arteriole that brings blood to the glomerulus. It is larger in diameter than the efferent arteriole.
The efferent arteriole is the arteriole that carries blood away from the glomerulus. It is smaller in diameter than the afferent arteriole.
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Why is the afferent arteriole larger in diameter than the efferent arteriole?
This is to provide for the increased blood pressure in the glomerulus for ultrafiltration to take place. When the afferent arteriole is larger, more blood would flow into the efferent arteriole, which is of a smaller diameter, resulting in increased blood pressure in the glomerulus. The high hydrostatic pressure forces small molecules such as water, urea, uric acid, creatinine, amino acids, mineral salts through the glomerulus to the Bowman's capsule and into the nephron, resulting in ultrafiltration.
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Answer:
Explanation:Afferent and efferent arterioles are responsible for the supply of blood to the glomerulus of the kidney. The main difference between afferent and efferent arterioles is that afferent arterioles carry blood to the glomerulus whereas efferent arterioles take the blood away from the glomerulus. An afferent arteriole is a branch of the renal vein, which carries blood containing nitrogenous wastes. An efferent arteriole is a branch of the renal artery, which carries filtered blood back to the circulation. The blood pressure of the afferent arteriole is high, facilitating the ultra-filtration of blood plasma at the glomerulus. Bowman’s capsule contains the filtered blood plasma at the glomerulus. Since most of the water content and small molecules are filtered out, the blood pressure of the efferent arteriole is less t