Afferent is used to describe things like nerves, blood vessels, and arteries that lead toward or bring things (like blood, in the case of arteries) to an organ, such as the heart or brain. Efferent means the opposite—it’s used to describe parts that carry or lead things away from organs or other parts.
What is a function of the afferent arteriole quizlet?
afferent arteriole. takes blood from the renal artery to the Bowman’s capsule the kidney. aldosterone. hormone secreted by the adrenal cortex, regulates salt and water balance in the kidney.
What is the advantage of difference in diameter of efferent arteriole and afferent arteriole?
The efferent arteriole carries blood away from the glomerulus. Because it has a smaller diameter than the afferent arteriole, it creates some resistance to blood flow, producing the back-up of blood in the glomerulus which creates higher pressure in the glomerular cavity.
What are afferent arterioles?
The afferent arteriole is an arteriole that feeds blood into the glomerulus. The renal arterioles play a central role in determining glomerular hydraulic pressure, which facilitates glomerular filtration.
How do you distinguish between afferent and efferent arteriole histology?
The afferent arteriole has a larger diameter in the cortical nephron. The efferent arteriole has a smaller diameter in the cortical nephron. Afferent arteriole maintains the blood pressure. Efferent arteriole maintains the glomerular filtration rate.
Why the afferent arteriole is wider than efferent arteriole?
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.
Why is afferent arteriole is smaller than efferent arteriole?
The diameter of efferent arteriole is less than that of the afferent arteriole because pressure builds up in the arteriole and some of the fluid is forced to go through the gaps in cells of Bowman’s capsule (podocytes). This filters the blood, and this process is called ultrafiltration.
Why is the afferent arteriole bigger than the efferent arteriole?
The diameter of afferent arteriole is bigger than efferent arteriole to produce an extraordinary force of blood in the glomerulus which directly contributes in the efficiency of ultrafiltration of the blood and production of the pre-urine which then passes down the convoluted tubules for reabsorption.
