Chapter 16: Anatomy of the Heart

The P wave of an electrocardiogram represents ___.

A Dr. hears an abnormal swishing sound of a heart. Which condition is the best diagnosis for the patient?

Which of the structures is superficial to the heart wall & serves to protect, anchor,&prevent heart from overfilling?

An enlarged R wave on an ECG would indicate ___.

The tricuspid valve is located between the ___.

Stroke volume is the amount of blood pumped by each ventricle in one minute.

Pulmonary semilunar valve prevents back flow of blood into the right ventricle.

Which of the following valves is most often faulty in the heart?

Circumflex artery runs to the apex of the heart.

The lining of the heart chambers is called ___.

Aortic semilunar valve is located between the right atrium and right ventricle.

Tricuspid valve prevents backflow of blood into the left ventricle.

In the fetus, blood from the left and right sides of the heart normally mix.

Diastole is relaxation.

The ___ nerve carries parasympathetic fibers to the sinoatrial (SA) node.

The most muscular chamber of the heart is the ___.

Into which chamber of the heart do the pulmonary veins deliver blood?

The absolute refractory period refers to the time during which ___.

The role of the atrioventricular node (AV node) is to ___.

The interventricular septum forms a dividing wall between the ___.

Which of the following factors give the myocardium its high resistance to fatigue?

Guided by powerful signaling molecules, the human heart developed from ___.

Cardiac output is the volume of blood pumped by one ventricle with each heartbeat.

Which of the following statements is NOT true about the shape, position, and location of the heart?

Which is the correct sequence of layers in the heart wall, starting with the outer layer?

The second heart sound (the "dup" of "lub-dup") is caused by the ___.

The trabeculae carneae are located in the ___.

The coronary arteries arise from the ___.

Which of the following are correctly paired?

The normal pacemaker of the heart is the ___.

Bicuspid valve is located between the left atrium and left ventricle.

From a perspective of blood returning from systemic circuit, identify the sequence of blood flow through heart chambers

Which of the following is NOT a role of the fibrous pericardium?

The superior chambers of the heart are called the ___.

Which of the following would lead to a decrease in heart rate?

Systole is contraction

Posterior interventricular artery supplies blood to the left atrium and posterior walls of the left ventricle.

Anterior interventricular artery supplies blood to interventricular septum & anterior walls of both ventricles.

The endocardium is composed of ___.

The cardiac cycle includes all of the following events EXCEPT ____.

The structure just deep to the fibrous pericardium is the ___.

Cardiac output is ____.

Which of the following is a difference between cardiac muscle and skeletal muscle?

Noncontractile cardiac muscle cells initiate their own depolarization& cause depolarization of the rest of the heart are

Freshly oxygenated blood is delivered to the__, &then passes to the __to be pumped to the body tissue(systemic circuit).

The vessels that carry oxygen to the to the myocardium are called ___.

The contractile cardiac muscle fibers of the myocardium behave as a single, coordinated unit called a ___.

During pulmonary circulation, blood leaves the ____.

Cardiac cycle is the events associated with blood flow through the heart during one complete heartbeat.

What part of the heart is considered the systemic circuit pump?

Choose the correct sequence of electrical current flow through the heart wall.

The inferior vena cava brings blood from the lower regions of the body and empties into the ___.

When the bicuspid valve closes, it prevents the back flow of blood from the ___.

During systemic circulation, blood leaves the ____.

The ___ are attached to the AV valve flaps.

Right marginal artery supplies blood to the lateral right side of the myocardium.