Exam 13: The Cardiovascular System: the Heart

Match the component of the conduction system of the heart with the description. Epicardium:

Match the component of the conduction system of the heart with the description. Endocardium:

Desmosomes function to hold cardiac muscle fibers (cells) firmly together.

Impulses from the sympathetic division of the autonomic nervous system (ANS) speed up heart rate while impulses from the parasympathetic division of the ANS slow down heart rate.

A heart murmur is not always an indication of a serious health problem.

Chordae tendineae assist the cusps of the semilunar valves in preventing backflow of blood.

Pericardial fluid is located in a space external (superficial) to the visceral pericardium.

The inferior surface of the heart can be described as all of the following EXCEPT:

Desmosomes and gap junctions are found in:

Atrioventricular (AV) valve cusps are connected by strong cords called _____ to _____ muscles on the walls of the ventricles.

Which condition of the heart is most likely to contribute to "scar formation"?

The pulmonary veins carry deoxygenated blood to the lungs.

The spread of depolarization from the sinoatrial (SA) node through the two atria is recorded on an electrocardiogram (ECG) as the

Which type of cholesterol molecule removes excess cholesterol from body cells and transports it to the liver?

State three functions and four components of the fibrous skeleton of the heart.

The coronary arteries carry oxygenated blood to the myocardium.

Which structure in the developing heart forms from the primitive atrium?

Match the ventricle of the heart in with the description. Right ventricle:

During which phase of the cardiac cycle are the AV valves closed?

The fossa ovalis is a thin spot or depression in the interatrial septum.