What is the effect of a loss of blood volume on the baroreceptor? a) no effect o

Question

What is the effect of a loss of blood volume on the baroreceptor?

a) no effect on firing rate b) increased firing rate c) decreased firing rate d) blood volume and baroreceptor are unrelated.

3. Figure (below) shows normal balance for operation of the arterial baroreceptor control system. What are the units of the y-axis? a) sympathetic nerve activity (impulses/sec) b) baroreceptor firing activity (impulses/sec) c) central venous pressure d) mean arterial pressure

4. Which of the following is a true statement which identifies the changes in the cardiovascular system when our body goes from a horizontal to a vertical position? a) It causes an increase in the central venous pressure and standing causes an increase in baroreceptor firing. b) It causes an increase in the central venous pressure and standing causes a decrease in baroreceptor firing. c) It causes a decrease in the central venous pressure and standing causes an increase in baroreceptor firing. d) It causes a decrease in the central venous pressure and standing causes a decrease in baroreceptor firing.

5. During exercise, which of the following statements is true? a) The ?set point? of the baroreceptor decreases; baroreceptor firing is attenuated b) The ?set point? of the baroreceptor decreases; baroreceptor firing is augmented c) The ?set point? of the baroreceptor increases; baroreceptor firing is attenuated d) The ?set point? of the baroreceptor increases; baroreceptor firing is augmented

6. For a subject with an enlarged heart due to systolic heart failure (SHF) and for a comparison of a normal heart and failing heart, which of the following is accurately describes the tension for a failing heart as it attempts to maintain pressure? (Hint: Law of La Place, T = PR) a) Normal tension > SHF tension b) Normal tension = SHF tension c) Normal tension < SHF tension d) The Law of LaPlace does not relate Tension to Pressure

Explanation / Answer

baroreceptor firing increase so b) increased firing rate

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