626 Chapter Twenty-Two The Candionascalar System: Vessels and Cirealotion 28. A

Question

626 Chapter Twenty-Two The Candionascalar System: Vessels and Cirealotion 28. A patient suffers a stroke ot the middle cerebral antery that cuts afl the blood s would result? upply to the right parietal lobe of the brain What neurological Ceficts. Discuss why blood pressure night diter itt right and left arms. 30. As we age our erteries become soff and less flexble Discuss whet might happen to resistance and blood flow through the arteries in aging adus Can You Synthesize What You've Learned? factors are important for regulating blood flow to ssue capillary beds. For example, in skeietal muscle tissue that is actively contracting ta duringn would respiration. Would elax Justily your answer exercise), levels of oxygen stant to decrease as the oxygen is ulized, and levels of carbon diaside increase as it is preduced during celluler increasing levels of carbon daide in the bsaues e'usetn smooth muscle forming the sphincters 'n artenoles to contract or 32 Specialized capilary beds are located throughout the body and are adaphed for their spectic physiological function Recall from chapter 14 that the blood vessels hat supply nervous issues of the brain are surrounded by glial cells called astrocytes, which collectively form the blood-brain barrier Similarly, biood vessels that form the choroid plexus within the brain ventricles are sunrounded by glial ceils called eperdymal cells, which collectively form the blood-cerebrospinal d 33. Given what you have just learned about the contents of the blood entering the liver from the hepatic portal system, discuss the type of capillaries located within the liver and state why these caplaries might be advantageous given their structure and function is a condition that can occur in gregeant women that results in elevated blood pressure. While the oriin of preeclampsia is unclea, there that substances that c.use vasoconstriction may be released in the blood. Describe hthese substances will increase blood pressure.. 34. Preeclampsia s evidence thet sabstances vasoconsoric Then discuss why this could be life threatening for both mother and chid 35 A patent enturs a clinic for a routine phyaicel esaminason. The nurse assigned to the pesient begins to record the patients blood pressure usinga Sphryn nanometer and stet oscope As the nurse intlates the cut! to 160 mm Hg therean emergency down the hall that requies her ottenton Rather than releasing the valve, she keeps the cuffinflated Describe the risks to the patient that are involved when leaving the cuft inflated for greater than 1 minute 38. Dan is diagnosed with atherosclerosis and coronary artery disease. He undergoes coronary bypass surgery to restore blood ftiow to his heart Discuss recovery. why doctors might suggest that Dan lmt vigorous exercise during his

Explanation / Answer

28.Middle cerebral artery syndrome is a condition whereby the blood supply from the middle cerebral artery (MCA) is restricted, leading to a reduction of the function of the portions of the brain supplied by that vessel: the lateral aspects of frontal, temporal and parietal lobes, the corona radiata, globus pallidus, caudate and putamen. The MCA is the most common site for the occurrence of ischemic stroke.Its symptoms include-

29. In younger people, side-to-side differences in blood pressure can occur when a muscle or something else compresses an artery supplying the arm, or by a structural problem that prevents smooth blood flow through an artery.

In older people, it’s usually due to a blockage arising from atherosclerosis, the artery-clogging disease process at the root of most heart attacks, strokes, peripheral artery disease, and other cardiovascular conditions.

A less common cause of blood pressure that is different in each arm is an aortic dissection. This is a tear inside the wall of the aorta, the main pipeline of oxygenated blood from the heart to the body.

30.As we age the blockage also gets increased in the arteries due to fat deposition and wer and tear of the artery walls takes place.This increases the resistance to the blood flow and finally flow of the blood is decreased within the arteries.

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