A&P 2- Chapter 18- The Heart

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

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

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

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

The tricuspid valve is located between the ___.

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

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

Systole is contraction

The coronary arteries arise from the ___.

The normal pacemaker of the heart is the ___.

During systemic circulation, blood leaves the ____.

Circumflex artery runs to the apex of the heart.

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

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

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

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

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

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

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

Cardiac output is ____.

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

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

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

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

The superior chambers of the heart are called the ___.

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

The ___ are attached to the AV valve flaps.

During pulmonary circulation, blood leaves the ____.

Diastole is relaxation.

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

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

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

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

The most muscular chamber of the heart is the ___.

The interventricular septum forms a dividing wall between the ___.

Which of the following are correctly paired?

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

The P wave of an electrocardiogram represents ___.

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

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

An enlarged R wave on an ECG would indicate ___.

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

The lining of the heart chambers is called ___.

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

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

Tricuspid valve prevents backflow of blood into the left ventricle.

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

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

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

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

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

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

The trabeculae carneae are located in the ___.

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

The endocardium is composed of ___.

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