Which of the following statements about the baroreceptor reflex control of blood pressure is INCORRECT?Group of answer choicesBaroreceptors are stretch receptors that detect distension of the vascular walls in which they are located.Changes in arterial pressure are primarily detected by baroreceptors located in the carotid sinuses and aortic arch.An increase in arterial pressure raises the firing rate of afferent baroreceptor nerves.A decrease in arterial pressure is likely to result in decreased sympathetic activation and increased parasympathetic activation of the sinoatrial node.
Question
Which of the following statements about the baroreceptor reflex control of blood pressure is INCORRECT?Group of answer choicesBaroreceptors are stretch receptors that detect distension of the vascular walls in which they are located.Changes in arterial pressure are primarily detected by baroreceptors located in the carotid sinuses and aortic arch.An increase in arterial pressure raises the firing rate of afferent baroreceptor nerves.A decrease in arterial pressure is likely to result in decreased sympathetic activation and increased parasympathetic activation of the sinoatrial node.
Solution
The incorrect statement is: "A decrease in arterial pressure is likely to result in decreased sympathetic activation and increased parasympathetic activation of the sinoatrial node."
This is incorrect because a decrease in arterial pressure actually results in increased sympathetic activation and decreased parasympathetic activation. This is because the body responds to a decrease in blood pressure by trying to increase it, and one way it does this is by increasing the heart rate and force of contraction, which is achieved by increasing sympathetic activation and decreasing parasympathetic activation.
Similar Questions
Select the CORRECT answer. When the baroreceptor reflex is triggered by a decline in blood pressure:Group of answer choicesSympathetic activity increases and cardiac output increases.Peripheral resistance decreases.Sympathetic activity increases.Cardiac output increases.
Which of the following does NOT occur in response to baroreceptors detecting an increase in mean arterial pressure?Question 1Select one:a.Decreased heart rateb.Decreased venous compliancec.Decreased end diastolic volume.d.Decreased frequency of sinoatrial node action potentialse.VasoconstrictionClear my choice
The aortic baroreceptor senses stretching of the aorta. How will the nervous system respond?Multiple ChoiceIncreased parasympathetic activity will increase heart rate.Increased sympathetic activity will increase heart rate.Increased sympathetic activity will decrease heart rate.Increased parasympathetic activity will decrease heart rate.
are responsible for the detection of mean arterial pressure.Question 8Select one:a.Venous baroreceptorsb.Arterial baroreceptorsc.Aortic chemoreceptorsd.Thermoreceptorse.Medullary chemoreceptorsClear my choice
which of the following contributes significantly to the rapid control of aeterial pressure by sympathetic stimulation?a) cushing reactionb) renin angiotensin aldosterone systemc) fine tuning of the baroreceptor reflexd) vasoconstriction of large veins
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.