k chapters 14 15 and 16-Google Chrome cure https// mýmyct/itemViewTassignmentPro
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k chapters 14 15 and 16-Google Chrome cure https// mýmyct/itemViewTassignmentProblemID-93887461 ework chaptos 14 .15 and 16Essentials Figure Cardiovascular Control e previous| 10 of 18 art G- Effects of the Sympathetic Nervous System on Blood Pressure Regulation Rank each of the tolowing phrases in the correct sequential order to demonstrate how sympathetc activity changes when blood pressure ls high. Not at labels may be used. Drag the appropriate labels to their respective targets. Note: not all labels will be used Hints Hint 1. Fight-or-flight response The tight-or-fight response is the general eftect of the sympathetic nervous system. One purpose of this response is to enhance oxygen delivery to the tissues of the body under high metabolic demand (eg, exercise, exertion, or need for escape) Baroreceptors would detect the increased sympathetic activity Hint 2. Negative feedback and homeostasis ick to open Cardiac outputVessels Medula oblongata smooth muscle Acteriolar increase fring beats with less decreases output decreases force Type here to searchExplanation / Answer
Correct sequential order is-
Baroreflex helps to maintain blood pressure at nearly constant levels. It provides a negative feedback loop in which elevated blood pressure reflexively causes the heart rate to decrease and causes blood pressure to decrease and vice versa. Thus raised blood pressure increases baroreflex activation.
When blood pressure Rises it results in increased stretch and great degree of activation of baroreceptors. Active baroreceptors fire action potential more frequently. Baroreceptor action potentials are relayed to the solitary nucleus in medula oblangata. Increased activation of the solitary nucleus inhibits the vasomotor centre and finally inhibition of sympathetic nervous system due to which sympathetic output decreases, which results in decreased force of contraction, reduced stroke volume and decreased cardiac output.
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