BIOL 336 Lecture Notes - Lecture 25: Blood Pressure, Heart Valve, Wiggers Diagram

Match the following terms describing the physical/mecahnical events with the correct phases of the cardiac cycle. Each phase may be used more than once.

1. What is the significance of the ST segment?

a. ventricular depolarization

b. ventricular systole

c. atrial systole

d. atrial depolarization

2. Ventricular contraction is also known as ventricular __________.

3. Ventricular diastole is also known as ventricular __________.

4.

A nurse takes your blood pressure and tells you the numbers are 110/70. What are your blood pressures?

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a. Systolic = 110 mmHg, Diastolic = 70 mmHg

b. Diastolic = 110 mmHg, Systolic = 70 mmHg

5.

The brachial artery is the most common site of blood pressure measurement with the sphygmomanometer.

True

False

6.

Cardiac cycle is the ____________________________.

a. The volume of blood ejected by each ventricle in one minute

b. One complete contraction and relaxation of all chambers of the heart

c. The pressure blood exerts on the wall of blood vessels

d. Depolarization and repolarization of the ventricles

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).