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The diameter of the afferent renal arteriole narrows progressively more and more into the glomerular capillaries, with the same blood flow, leading to an increase in pressure within the glomerulus. This is so that the high pressure can force solutes and water across into the Bowman's capsule for the renal tubules.
Wiki User
∙ 9y ago
Wiki User
∙ 14y agoThe blood pressure in the glomerulus is extraordinarily high for a capillary bed because (1) arterioles are high-resistance vessels and (2) the afferent arteriole has a larger diameter than the efferent. This high blood pressure easily forces fluid and solutes out of the blood into the glomerular capsule.
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What capillary bed produces filtrate?
glomerulus
The Capillary bed in bowman's capsule that removes material from the blood is what?
GLOMERULUS
What is a specialized capillary bed designed to function as a mechanical filter Answer?
Glomerulus in the bow man's capsule
Why is the glomerular capillary bed unusual?
unlike other capillaries glomerulus is connected to arterioles on both sides.It's pressure is higher than that of other capillaries and remains almost constant throughout the length of the capillaries.
What is the blood pressure of a capillary bed?
Pressure at capillary bed varies from 32mmHg at the arteriolar end to about 10mmHg at venous end, with an average of 17mmHg
Which side of the capillary bed has the highest hydrostatic pressure?
arterial
What makes up the renal portal system?
It is made up of the afferent arteriole which supplies blood to the kidneys. The glomerulus, which is the first capillary bed produces filtrate. The efferent arteriole takes blood from the kidneys. The peritubular capillary system, which is the second capillary bed reclaims most of the filtrate. Filtrate is what eventually becomes urine.
What is brisk capillary refill?
Capillary refill refers to how quickly the color returns to the external capillary bed following pressure that has been applied to an area. A brisk capillary refill means that the color returned to the capillary bed rather quickly.
What causes the transfer of materials between capillaries and tissue fluid?
As blood enters the capillary bed on the arteriole end, the blood pressure in the capillary vessel is greater than the osmotic pressure of the blood in the vessel. The net result is that fluid moves from the vessel to the body tissue.At the middle of the capillary bed, blood pressure in the vessel equals the osmotic pressure of the blood in the vessel. The net result is that fluid passes equally between the capillary vessel and the body tissue. Gasses, nutrients, and wastes are also exchanged at this point.On the venue end of the capillary bed, blood pressure in the vessel is less than the osmotic pressure of the blood in the vessel. The net result is that fluid, carbon dioxide and wastes are drawn from the body tissue into the capillary vessel.
Why At the arteriole end of the capillary more fluid leaves the capillary than enters as a result of differences in what?
The reason fluid leaves at the arterial end of the capillary bed and returns to the venous end of the capillary bed is the difference in hydrostatic pressure. This means the pressure against the inside of the vessel is greater that the pressure on the outside of the vessel on the arterial end and vice-versa on the venous end. Also, loss of water at the arterial end very slightly raises the oncotic pressure on the venous end, although to what degree this adds to the return of fluid to the vasculature is unknown.
Is blood pressure highest in the aorta pulmonary artery capillary bed or subclavian vein?
The order, from most to least pressure: * Aorta * pulmonary artery * capillary bed * subclavian vein This is because the aorta takes blood the farthest distance, from the heart to the rest of our body organs, so it requires a greater push from the heart. Pressure in the veins is always lower, due to the fact the blood flowing through them has travelled further. The pulmonary artery doesn't take blood as far as the aorta, so it therefore does not need as high a pressure.
When the blood pressure in a capillary exceeds the osmotic pressure in the capillary what is the net movement of fluid?
The movement should be OUTWARD toward the interstitial fluid. This is because the blood pressure is greater than the osmotic pressure (or more correctly the onconic/colloid pressure, since the membrane is actually quite permeable to ions but is not permeable to plasma proteins), and thus fluid (water and ions, along with other small molecules) can flow OUT of the capillary bed.
