Cardiac Physiology and Function Quiz

Right atrium receives deoxygenated blood from the body.

Heart valves prevent backward flow of blood.

Radial artery is not a major coronary artery.

Systole is the phase when the heart contracts and pumps blood out.

Cardiac output is the volume of blood pumped out by each ventricle per minute.

Adrenaline increases heart rate and force of contraction.

Atrial fibrillation is the abnormal rhythm of the heart with rapid and irregular beating.

S wave is not a component of the ECG waveform.

Cardiac tamponade is the condition characterized by fluid accumulation in the pericardial sac around the heart.

Respiratory rate does not contribute to the regulation of blood pressure.

Stroke volume is the volume of blood pumped out by each ventricle with each contraction.

SA node is responsible for the pacemaker activity in the heart.

Murmur is the sound produced by turbulent blood flow through the heart valves during the cardiac cycle.

Epicardium is the outermost layer of the heart wall.

Sodium influx is responsible for the rapid depolarization phase of cardiac muscle cells.

Diastole is the term for the relaxation of heart chambers during which they fill with blood.

SA node initiates the electrical impulse for heart contraction.

Calcium plays a key role in initiating cardiac muscle contraction.

Diastole is the relaxation phase when the heart muscle is resting and filling with blood.

Bundle of His conducts electrical impulses from the atria to the ventricles.

Coronary artery disease is the condition characterized by the narrowing of coronary arteries due to plaque buildup.

Insulin decreases heart rate and force of contraction.

AV node delays impulses before they reach the ventricles in the heart's conduction system.

Low cholesterol levels are NOT a risk factor for cardiovascular disease.

Interatrial septum separates the left and right sides of the heart.