Hi, I was wondering if you could help me with all parts of my question. Thanks!
1a)When aortic pressure is lower than left ventricular pressure:
A The aortic semilunar valve is open and the left AV valve is closed.
B The aortic semilunar valve is closed and the left AV valve is closed.
C The aortic semilunar valve is open and the left AV valve is open.
DThe aortic semilunar valve is closed and the left AV valve is open.
b)Which of the following is true?
AEnd-diastolic volume is lower than end-systolic volume.
B When the left atrium is at its maximum pressure, the left AV valve is open.
C The left ventricle is at its maximum pressure at the beginning of systole.
DWhen the left ventricle is at its maximum pressure, the left AV valve is open.
E The aorta is at its maximum pressure at the beginning of diastole.
c)Which of the following is a change that would increase MAP over an acute timescale?
A Decreased end-diastolic volume.
B Increased secretion of a hormone promoting arteriolar vasoconstriction.
C Increased activity of parasympathetic nerves to the heart.
D Decreased blood volume (e.g., due to hemorrhage).
Hi, I was wondering if you could help me with all parts of my question. Thanks!
1a)When aortic pressure is lower than left ventricular pressure:
A The aortic semilunar valve is open and the left AV valve is closed.
B The aortic semilunar valve is closed and the left AV valve is closed.
C The aortic semilunar valve is open and the left AV valve is open.
DThe aortic semilunar valve is closed and the left AV valve is open.
b)Which of the following is true?
AEnd-diastolic volume is lower than end-systolic volume.
B When the left atrium is at its maximum pressure, the left AV valve is open.
C The left ventricle is at its maximum pressure at the beginning of systole.
DWhen the left ventricle is at its maximum pressure, the left AV valve is open.
E The aorta is at its maximum pressure at the beginning of diastole.
c)Which of the following is a change that would increase MAP over an acute timescale?
A Decreased end-diastolic volume.
B Increased secretion of a hormone promoting arteriolar vasoconstriction.
C Increased activity of parasympathetic nerves to the heart.
D Decreased blood volume (e.g., due to hemorrhage).
