Which of the following is a change that would increase MAP over an acute timesca

Question

Which of the following is a change that would increase MAP over an acute timescale? O A Decreased end-diastolic volume. O BIncreased secretion of a hormone promoting arteriolar vasoconstriction. C Increased activity of parasympathetic nerves to the heart. O D Decreased blood volume (e.g, due to hemorrhage). Which of the following is true? O AEnd-diastolic volume is lower than end-systolic volume. O B When the left atrium is at its maximum pressure, the left AV valve is open. OCThe left ventricle is at its maximum pressure at the beginning of systole. O D When the left ventricle is at its maximum pressure, the left AV valve is open. OE The aorta is at its maximum pressure at the beginning of diastole.

Explanation / Answer

1.The secretion of the harmone promoting arteriolar vasoconstriction(option b)results in a change that would increase MAP over an acute timescale, because the harmone promotes contraction of vascular smooth muscle which in turn causes vasocontraction of the cappillaries and small arterioles and can increase MAP. 2.option c), the left ventricle is at maximum pressure at the beginning of systole. 3.when venticle pressure is higher than aortic pressureoption c) the aortic semilunar valve is open and the left av valve is open

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.