Circulatory System II

What is the heart sound associated with the closure of aortic and pulmonary valves known as?

Which condition is characterized by uncoordinated atrial and ventricular contractions due to a defect in the conduction system?

Which component of the electrocardiogram is the result of ventricular depolarization and precedes ventricular contraction?

What can happen in ventricular fibrillation that makes it more life-threatening?

What is the purpose of defibrillation?

During depolarization in the heart, the potential moves ________.

Which node in the heart acts as the pacemaker and controls the electrical impulses for contraction?

What is the main function of diastole in the cardiac cycle?

At the beginning of the cardiac cycle, what happens to the atrioventricular (AV) valves?

What occurs during systole in the cardiac cycle?

What is the correct sequence of electrical impulse propagation through the heart?

What is the approximate time taken for the electrical impulses to travel from the SA node to the Purkinje fibres?

Which event on the electrocardiogram (ECG) represents ventricular depolarization?

What is the heart sound associated with the closure of the atrioventricular (AV) valves during ventricular systole?

Which part of the electrocardiogram (ECG) represents ventricular repolarization?

What initiates atrial systole in the heart?

Which part of the heart experiences depolarization indicated by the P wave on an ECG?

What is the purpose of the delay at the AV node for approximately 0.1 second?

Where are the AV bundle branches located in the heart?

What follows the excitation of the SA node in the heart's electrical conduction system?

What is the normal cardiac output in liters per minute in a healthy individual?

What is the term used to describe abnormal heart sounds?

What causes a high pitched sound or a click to be heard in the case of a stenotic valve?

Which factor maintains cardiac output when stroke volume declines due to factors like decreased blood volume or weakened heart?

What is the main factor determining stroke volume in the heart's pumping cycle?

What part of the nervous system increases heart rate?

Which of the following describes preload in relation to the cardiac muscle cells?

What effect does anything that increases end-diastolic volume (EDV) have on stroke volume (SV)?

Which of the following is considered an extrinsic control of stroke volume?

Which technique can be used to measure ejection fraction in cardiac function evaluation?

What is the primary function of arterioles?

What is the primary factor that determines the magnitude of the pulse pressure?

Which of the following statements about arterial compliance is true?

What is the primary function of arteries?

What is the purpose of the radio-opaque contrast material injected during cardiac catheterization?

Which of the following structures is responsible for the exchange of gases and nutrients between blood and tissues?

What is the effect of a decrease in arterial compliance?

Which of the following structures is part of the vascular system?

What is the difference between systolic and diastolic pressure called?

Which of the following statements about the vascular system is true?