The Heart

Which chamber of the heart receives poorly oxygenated (venous) blood from the body?

Which chamber of the heart receives well-oxygenated (arterial) blood from the lungs?

Which chamber of the heart pumps blood into the aorta for distribution to the body?

Which event marks the beginning of diastole?

What causes the first heart sound (lub) heard with a stethoscope?

What causes the second heart sound (dub) heard with a stethoscope?

What event marks the end of diastole?

Which layer of the heart wall is composed of cardiac muscle?

What is the outermost layer of the heart wall called?

Which layer of the heart wall lines the internal surface of the heart and its valves?

Which structure of the heart prevents the orifices of the valves from being overly distended?

What is the function of the fibrous skeleton of the heart?

Which part of the heart provides attachment for the leaflets and cusps of the valves?

What shape does the heart appear to be from an anterior or posterior view?

What is the function of the fibrous skeleton in terms of electrical conduction in the heart?

Which part of the heart is formed mainly by the left atrium?

Where is the apex of the heart located in adults?

Which surface of the heart is formed mainly by the left ventricle and partly by the right ventricle?

Which part of the heart remains motionless throughout the cardiac cycle?

Which part of the heart receives the pulmonary veins?

Which border of the heart is formed by the right atrium and extends between the superior vena cava and the inferior vena cava?

What structure emerges from the superior border of the heart?

What is the arterial continuation of the right ventricle and divides into right and left pulmonary arteries?