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Muscle fibers in arterioles, known as smooth muscle, can contract or relax to regulate blood flow. When these smooth muscle fibers contract, the diameter of the arteriole narrows (a process called vasoconstriction), which increases resistance and reduces blood flow to the capillaries. Conversely, when they relax (vasodilation), the diameter increases, allowing more blood to flow. This regulation is crucial for maintaining blood pressure and directing blood to areas of greater metabolic need.
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What happens to blood pressure when the smooth muscle of an arteriole contracts?
When the radius of the smooth muscle decreases the pressure increases. So the blood pressure becomes higher
Is the glomerular filtration rate the same when the efferent arteriole is constricted and dilated?
OLD, INCORRECT ANSWER: Changes in the diameter of the efferent arteriole will either increase (dilation) or decrease (constriction) the blood flow to the glomeruli. An increased flow means a more blood getting filtered over time. NEW, CORRECT ANSWER The 'efferent' arteriole leaves the renal corpuscle. It is easy to remember which direction efferent and afferent things are going by thinking e=exit and a=arrive. If you constrict the efferent arteriole, you actually inhibit blood from leaving the glomerulus, thus increasing the outward hydrostatic pressure pushing fluid into Bowman's capsule and increasing filtration. If you dilate the efferent arteriole, then you reduce pressure in the glomerular capillaries and reduce filtration.
Why is the blood pressure lower in lung capillaries than body capillaries?
Because if blood pressure in lung capillaries was as high as it is in body capillaries, the hydrostatic pressure caused by this blood pressure would force blood plasma out of the capillaries into intracellular spaces (as is done in body capillaries) or into the alveoli. This would reduce the efficiency of gas exchange.
An obstruction in the afferent arteriole would reduce the flow of blood into the?
glomerulus, leading to a decrease in blood pressure within the glomerulus. This reduction in pressure may impair the filtration process in the kidney, potentially leading to decreased urine production and retention of waste products in the body.
How do you get rid of muscle on the outer thighs for women?
muscle reduce in size when you dont use them.
What is ic cyclobenzaprine 5 mg for?
It is used as a muscle relaxant to help reduce muscle pain.
What is a treatment procedure to reduce muscle spasm?
traction
What is so great about compression socks?
Compression socks are great because they reduce muscle damage. They reduce muscle damage by increasing the circulation in the legs and feet by compressing them.
How do saturated dietary fibers reduce the risk of heart diseases?
The dietary fibres increase the amount of bowel. So the foods cannot stay on the intestine for longer period, the absorption of unsaturated fat reduce by.
What does a muscle relaxant do to help alleviate muscle tension or spasms?
A muscle relaxant works by targeting the nervous system to reduce muscle contractions, helping to alleviate muscle tension or spasms.
How do you reduce the big muscle or fat at cnemis?
To reduce the big muscle or fat at the cnemis, raise legs at 90 degrees when tired. Also refrain from using high heels as it will cause further development of the muscle, making it look bigger.
Which sphincters function as regulatory valves that reduce the flow of blood through a network of capillaries when they contract and constrict the arterioles?
Precapillary sphincters
