why is the afferent arteriole larger than the efferent

Explanation: The afferent arteriole is the arteriole that brings blood to the glomerulus. It is larger in diameter than the efferent arteriole. This is to provide for the increased blood pressure in the glomerulus for ultrafiltration to take place. What is the difference between the afferent and efferent arterioles

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Full Answer

What does the efferent arterioles extend to?

The efferent arterioles extend to become the. descending limb (loop of Henle). The proximal convoluted tubules extend to become the. distal convoluted tubule. Urine flows from the ascending limb (loop of Henle) into the. collecting ducts. The calyces receive urine from the. collecting duct.

What does an afferent nerve do?

Afferent Nerve Function The primary function of the afferent nerves is to transmit sensory impulses from the organs like the body surface, viscera, and muscles to the CNS. These sensory impulses could range from pain, vibrations, temperature, light, moving stimuli, and even noxious signals through nociceptors.

What is the function of an efferent neuron?

While on the other hand the function of efferent neurons is to receive and transmit the information from the central nervous system to all parts of the body. Afferent neurons are also known as sensory neurons while efferent neurons are called as motor neurons. Afferent neurons begins with a receptor efferent ends with effector.

What is afferent artery?

The afferent arteriole is an arteriole that feeds blood into the glomerulus. The afferent arterioles modulate their vascular resistance in response to changes in intraluminal pressure or composition of tubular fluid at the macula densa. In this manner, they control the glomerular filtration.

Why is the efferent arteriole smaller than the afferent arteriole?

Solution : The diameter of the efferent arteriole is less than afferent arteriole so as to create pressure in the glomenilus to filter the waste materials. Due to this, blood remains in glomerulus more time .

What is the difference between the afferent and efferent renal arterioles?

Difference between the efferent arteriole and afferent arteriole. Afferent arteriole is a branch of the renal artery that brings in blood to the glomerulus. Efferent arteriole is a branch of the renal artery that drains blood away from the glomerulus. Afferent arteriole carries blood to the glomerulus.

Is the efferent arteriole bigger than the afferent?

The efferent arteriole is the arteriole that carries blood away from the glomerulus. It is smaller in diameter than the afferent arteriole. These both the arterioles are found in the Bowman's capsule.

Is afferent smaller than efferent?

Constriction of the Afferent and Efferent Arterioles Normally the afferent arteriole is of larger diameter than the efferent. This means there is high resistance as the blood is forced from a wider vessel to a narrower one and this promotes filtration.

Why does efferent arteriole have small diameter?

Efferent arterioles are smaller in diameter than afferent and other normal arterioles because they increase pressure in the glomerular capillaries and heighten the efficiency of the filtration system in the kidney.

Why is the blood pressure in afferent arteriole high?

The myogenic response is the reflex response of the afferent arterioles to changes in blood pressure. Increased blood pressure increases the tension in the vascular wall, and the vascular smooth muscle contracts. Similarly, decreased blood pressure decreases the tension and the smooth muscle relaxes.

What is the effect of diameter size of afferent and efferent arterioles of glomerular filtration rate?

1. The afferent and efferent arterioles constrict in response to α-adrenergic stimulation. This vasoconstriction predominantly affects the afferent arteriole, effectively reducing hydrostatic pressure within the glomerular capillary lumen and decreasing glomerular filtration.

Is the diameter of the afferent arteriole larger or smaller than the diameter of the efferent arteriole state how this affects glomerular pressure?

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.

Why does the diameter of the efferent arteriole affect filtration?

A decrease in the diameter of the afferent arteriole has the opposite effect. An increase in the efferent arteriolar diameter (decrease in resis- tance) causes a decrease in the glomerular capillary hydrostatic pressure and a decrease in GFR.

What is the role of afferent and efferent arteriole on glomerular filtration?

Afferent arterioles branch off which ultimately leads into the glomerulus of Bowman's capsule. From here, efferent arterioles begin to form the venous system and subdivide into another set of capillaries known as the peritubular capillaries. Blood then leaves the kidney and enters the venous circulation.

How does the blood in the efferent glomerular Arteriole differ from the blood in the afferent glomerular Arteriole?

How does the blood in the efferent glomerular arteriole differ from the blood in the afferent glomerular arteriole? The blood in the efferent glomerular arteriole is more concentrated because some of the fluid has been removed to the nephron for urine production.

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.

What is difference between afferent vessel and efferent vessel?

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.

Answer

This is to create more pressure in the efferent arteriole coz the blood coming out of it need more force to travel through PCT -loop of Henley -DCT

Answer

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.

New questions in Biology

how are the various processes occurring in the human body controlled? in how many ways?​

What happens if the afferent arteriole is wider than the efferent arteriole?

If the afferent arteriole is wider than the efferent arteriole, the rate of blood entering the glomerulus will be higher than the the rate of blood leaving the glomerulus. Therefore with more blood going in than going out, there is a high filtration pressure within the glomerular capillaries

Why is the afferent arteriole narrow?

The afferent arteriole is wide so the people can run through easily. The efferent arteriole is narrow so the people have to run through more slowly, thus, causing a traffic jam . This keeps the pressure high in the glomerulus for ultrafiltration.

Why is the efferent smaller than the glomeruli?

The glomeruli are small so this large volume of blood is forced into them causing pressure to increase/be maintained. The fact that the efferent is smaller means that at any one time more blood enters than leaves the kidney meaning a large blood volume hence pressure to be maintained. 1. reply. N97.

What is the difference between an afferent and an ultrafiltration?

Ultrafiltration means "filtration with pressure", the pressure is to force fluid out of the blood into the nephron. Afferent is wider so that pressure is maintained in the glomerulus.

Why is the afferent arteriole larger than the 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. When the afferent arteriole is larger, more blood would flow into the efferent arteriole, ...

What happens when the afferent arteriole is larger?

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.

Which organ brings blood to the glomerulus?

The afferent arteriole brings blood to the glomerulus and the efferent arteriole carries blood away from the glomerulus.

What is the difference between an afferent and an efferent arteriole?

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 ...

What is the afferent arteriole?

Afferent arterioles are branches of the renal vein, approaching the proximal portion of the nephron. The blood pressure of the afferent arteriole determines the filtration rate of the blood plasma at the glomerulus. The diameter of the afferent arteriole changes with the changing blood pressure of the body, maintaining a constant glomerulus ...

What are the two types of blood vessels that supply blood to the glomerulus of the kidney?

Afferent and efferent arterioles are the two types of blood vessels that supply blood the glomerulus of the kidney. The main function of the glomerulus is to filter blood plasma. Afferent arterioles carry blood to the glomerulus while efferent arterioles take blood away from the glomerulus. Therefore, afferent arterioles contain blood with nitrogenous wastes whereas efferent arterioles contain filtered blood. The main difference between afferent and efferent arterioles is the structure, function, and composition of each type of blood vessels in the glomerulus of the kidney.

What happens to the afferent and efferent arterioles when blood pressure is reduced?

When the blood pressure is reduced, afferent arterioles release renin to activate the renin-angiotensin-aldosterone system, increasing the reabsorption of sodium ions from the glomerular filtrate. This may ultimately increase the blood pressure.

What is the branch of the renal vein?

Afferent Arteriole: Afferent arterioles are branches of the renal vein, approaching the proximal portion of the nephron.

Which arterioles supply blood to the glomerulus of the kidney?

Both afferent and efferent arterioles are involved in the supply blood to the glomerulus of the kidney.

Which organ contains less water, glucose, amino acids, ions, and nitrogenous wastes?

Efferent Arteriole: The blood of the efferent arteriole contains less water, glucose, amino acids, ions, and nitrogenous wastes.