Textbook Question
More than one choice may apply.
Soon after the onset of ventricular systole, the
a. AV valves close.
b. semilunar valves open.
c. first heart sound is heard.
d. aortic pressure increases.
18. The Heart
Cardiac Cycle
Back18. The Heart
Cardiac Cycle
- Textbook Question
The sequence of contraction of the heart chambers is:
a. Random
b. Left chambers followed by right chambers
c. Both atria followed by both ventricles
d. Right atrium, right ventricle, left atrium, left ventricle
- Textbook Question
An increase in preload causes a/an ________ in stroke volume in accordance with the ________ law. An increase in afterload causes a/an ________ in stroke volume. An increase in contractility causes a/an ________ in stroke volume.
- Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Atrial systole is responsible for ejecting most of the blood into the ventricles during the ventricular filling phase of the cardiac cycle.
1views - Multiple ChoiceA doctor puts his stethoscope on a patient's chest over the location of the heart and hears an abnormal swishing sound. Which of the following conditions is the best diagnosis for the patient's condition?
- Textbook Question
The pericardial cavity is located between:
a. The parietal pericardium and the fibrous pericardium.
b. The fibrous pericardium and the myocardium.
c. The parietal pericardium and the visceral pericardium.
d. The epicardium and the endocardium.
- Multiple ChoiceThe first heart sound represents which portion of the cardiac cycle?
- Multiple ChoiceWhat happens after the ventricles of the heart complete their contraction?
- Multiple ChoiceWhich law states that stroke volume is determined by the end-diastolic volume?
- Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The amount of blood in the ventricles at the end of the ventricular filling phase is the end-systolic volume.
- Multiple ChoiceWhich of the following correctly lists the phases of the cardiac cycle in order, starting immediately after ventricular filling?
- Multiple ChoiceWhich of the following statements about cardiac output is correct?
- Multiple ChoiceDuring which phase of the cardiac cycle is atrial pressure greater than ventricular pressure?
- Multiple ChoiceWhich of the following is the correct sequence of events regarding the cardiac cycle?
- Multiple ChoiceWhich two values are required to calculate cardiac output (CO) for a ventricle?