Cosider the various components of the arterial baroreceptor reflex and predictwhether the following variables will increase or decrease in response to a rise in arterial pressure.a. arterial baroreceptor firing rate (increase)b. parasympathetic activity to the heart (increase)C. sympathetic activity to the heart (decrease)d. arteriolar tone (decrease)e. venous tone (decrease)f. peripheral venous pressure (decrease)g. total peripheral resistance h. cardiac output (decrease)ANSWER IS ALREADY MENTION NEED LITTLE REASON OF ALLPLEASE I GIVE ANSWER ALREADY IN BRACKET BUT IF U GIVE INCOMPLETE SOLUTION LIKE 3SUBPARTS I WILL THUMBS DOWN NEED ALL SUBPARTS OTHERWISE SKIP

A. Increase in arterial pressure incrrses depolarization of sensory nerve ending increasing Arterial…

Answered: Cosider the various components of the…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter10: The Blood Vessels And Blood Pressure

Section: Chapter Questions

Problem 1SQE

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The right and left brachiocephalic veins ________. drain blood from the right and left internal jugular veins drain blood from the right and left subclavian veins drain into the superior vena cava all of the above are true
What effect does sympathetic stimulation have on stroke volume if thevenous return remains constant? Dilation of the coronary blood vesselsoccurs in response to an increased heart rate and stroke volume. Explainthe functional advantage of that effect.
During ventricular diastole, pressure in the ventricles falls to ____ mm Hg, while the pressure within the large arteries is about ____ mm Hg.A. 120, 80B. 80,120C. 80,0D. 0,80E. 40, 1204. Whereas (a) reflex is most important for regulating mean arterial pressure on a short-term basis; And (b) mechanism is most important for regulating mean arterial pressure on a long-term basis.(a)A. baroreceptor (b) chemoreceptorB. chemoreceptor (b) baroreceptor C. chemoreceptor(b) hormonal D. hormonal (b) baroreceptorE. baroreceptor (b) hormonal
Parasympathetic stimulation decreases the heart rate by Decreasing permeability of SA node cells to Ca2+ increasing ion influx, thus increasing the rate of depolarization. Increasing the permeability of SA node cells to Ca2+. Increasing the permeability of SA (sinoatrial) node cells to K+.
Blood velocity is slowest in the capillaries A. Explain the mechanics of why blood slows down in these blood vessels (objective N) B. What would happen if blood velocity was fastest in the capillaries?
Considering the Starling forces (not cardiac Frank-Starling law) affecting fluid movement in a capillary, describe two ways to promote an increase in net fluid movement into the interstitium (i.e. increase/decrease in a given force that is part of calculating net fluid movement)?
In the nineteenth century, Poiseuille’s law was experimentally deduced byJ. L. M. Poiseuille, who was interested in understanding the flow of blood inhorses’ arteries.We nowknowthat Poiseuille’s lawis a poorway of modelingblood flow in arteries. In your own words, give at least three reasons whyPoiseuille’s lawis not appropriate for arterial blood flowmodeling, and brieflydiscuss why this is the case.
22. Ventricular Contractility increases in response to circulating Epinephrine. What factor is responsible for this increase in the force of the contraction? A.the Na+ current (depol.) B.the Ca++ current which causes the plateau (trigger Ca++) C.the K+ current D.a decreased Central Venous Pressure 23. Normally, Systole takes up about 80% of the Cardiac Cycle. A. true B. false 24.Which of the following is not an affect of circulating Angiostensin II (AII)? A.thirst B.selective vasodilation C.increased peripheral vascular tone & resistance D.the release of Aldosterone from the adrenal cortex 25. Blood Volume affects blood pressure because it directly increases: A.Total Peripheral Resistance B.Stroke Volume C.End Systolic Volume D.Central Venous Pressure 26. Atrial Naturetic Factor is released to adjust blood pressure. Which organ releases this hormone? A.the heart B.the kidneys C.the adrenal cortex
Calculate the power generated by the right ventricle during (a) restful state; blood flow 5 L/min, and (b) intense activity; blood flow 25 L/min. Answer: (a) P = 0.25 W; (B) P = 4.5 W
The effective-refractory period present during Phase 2 of the actionpotential of ventricular myocytes:A)is relatively long because the Na+ current does not inactivate. B) is relatively long because K+ current is immediately activated once membrane potential becomes positive. C) prevents tetanus in the heart. D) is about twice as long as in skeletal muscle
22. Ventricular Contractility increases in response to circulating Epinephrine. What factor is responsible for this increase in the force of the contraction? A.the Na+ current (depol.) B.the Ca++ current which causes the plateau (trigger Ca++) C.the K+ current D.a decreased Central Venous Pressure
1. In figure ( bottom left): use the barorecptor reflex to explain why the R-R interval increases as systolic pressure (SBP) increases. 2. In figure ( bottom right): explain why the slope of SBP change to the R-R interval change.

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