Answer: D) precapillary sphincters relax.
Explanation:
Blood flow to a tissue will decrease if precapillary sphincters relax as, capillaries provides glucose and oxygen to the cells and allows blood to flow through it when the muscle ring known as the precapillary Sphincters get relaxed. The blood flow is stopped when the precapillary sphincters constrict flow of blood. As, certain chemical signals causes feeder arterioles to dilate and bring more blood into local areas then, it causes precapillary sphincters to relax.
It is very reasonable for the nurse to believe that this individual taking clopidogrel, has a background of coronary artery disease.
What is the function of the clopidogrel drug?
- It is an antiplatelet drug. It stops platelets, a kind of blood cell, from congregating and creating a potentially harmful blood clot.
- If one has a higher risk of developing blood clots, using clopidogrel can help.
- Clopidogrel has been shown to reduce the risk of myocardial infarction, stroke, and vascular mortality in people with atherosclerosis and in those who have had coronary stents implanted.
- ITP, CVA, and hemophilia are not suggested conditions to be treated with it.
When not to use clopidogrel?
For some folks, clopidogrel is not a good choice. In order to ensure that this medication is safe for you, let your doctor know if you:
- possess an ulcer in the stomach or have had ulcers in the past
- have experienced brain bleeding (a brain hemorrhage)
- having a bleeding condition, such as hemophilia
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Stenting is an alternative to endarterectomy for treatment of carotid artery stenosis, but long-term efficacy is uncertain.
What is Stenting?
A stent is a small tube made of wire mesh. It holds open an artery and stays there indefinitely.
If a coronary artery (a blood vessel that supplies an accumulation narrows the heart muscle. Plaque is a fatty buildup that can lessen the blood flow. if there is less blood flow Chest pain may be caused by damage to the heart muscle.If a clot develops and entirely obstructs the a portion of the heart muscle's blood flowthe heart attack happens.Stents maintain coronary artery patency.and lower the risk of having a heart attack.
A stent is deployed by collapsing it and placing it over the
the balloon catheter. It is then brought close to the obstruction.
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Answer:
1- vitreous gel, 2- optic nerve, 3- macula, 4- fovea, 5- retina, 6- lens, 7- pupil, 8- cornea, 9- iris
Explanation:
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Temporary, intermittent neurologic deficits commonly precede ischemic stroke.
Interrupted or decreased blood supply to part of the brain can cause ischemic stroke, stopping brain tissue from obtaining oxygen and nutrients. After which necrosis starts quickly in the brain cells, which can lead to permanent brain tissue damage. The most common cause of ischemic stroke is the formation of blood clots in the brain tissue.
Intermittent neurologic defects are a group of defects that might be related to the dysfunction of several organ systems, including the central nervous system, and cardiovascular system.
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