Study Guide: The Heart

The visceral pericardium is found

The correct layers of the heart, from superficial to deep, are

The atrioventricular valves are also called

Semilunar valves prevent backflow of blood into the

The most abundant blood supply goes to the

Branching of an artery as it progresses from proximal to distal is called

Which of the following is a semilunar valve

Rhythmic compressions of the heart combined with effective artificial respiration in cases of cardiac arrest are knows as [blank_start]cardio[blank_end] [blank_start]pulmonary[blank_end] [blank_start]resuscitations[blank_end].

Increased serum levels in the blood often indicate a recent myocardial infraction. These levels are often monitored by a blood test called [blank_start]troponins[blank_end] and a blood marker known as [blank_start]C[blank_end] [blank_start]reactive[blank_end] [blank_start]protein[blank_end].

Because cardiac muscles are capable of contracting on their own in a slow, steady rhythm, they are considered [blank_start]autorhythmic[blank_end].

The free edges of the cuspid flaps are anchored to the papillary muscles of the ventricles by several tendinous cords that are more commonly referred to as [blank_start]chordae[blank_end] [blank_start]tendineae[blank_end].

A tiny bump at the end of a T wave is usually

The normal pattern of impulse conduction through the heart is

An ECG P wave represents

Repolarization of the atria is

Contraction of the ventricles produces

The contraction phase of the cardiac cycle is referred to as systole.

Vagus fibers to the heart serve as accelerator nerves.

The QRS complex represents repolarization of the ventricles

Rapid ejection is characterized by a marked increase in ventricular and aortic pressure and in aortic blood flow.

Isovolumetric ventricular contraction occurs between the start of ventricular systole and the opening of the semilunar valves.

[blank_start]Subendocardial[blank_end] [blank_start]Branches[blank_end] are also known as Purkinje fibers.

Pacemakers other than the SA node are abnormal and are usually [blank_start]ectopic[blank_end] [blank_start]pacemakers[blank_end].

A complete heartbeat is referred to as a [blank_start]cardiac[blank_end] [blank_start]cycle[blank_end].

A considerable quantity of blood called the [blank_start]residual[blank_end] [blank_start]volume[blank_end], normally remains in the ventricles at the end of the ejection period.

A swishing abonormal heart sound indicating an incomplete closing of the valves or a stenosis of them is known as a [blank_start]heart[blank_end] [blank_start]murmur[blank_end].

A valve that permits blood to flow from the right ventricle into the pulmonary artery is called the

The left chambers are separated form the right chambers by an extension of the heart wall called the [blank_start]septum[blank_end].

[blank_start]Veins[blank_end] return blood from various tissues to the heart.

Myocardial cells receive blood by way of two small vessels, the right and left [blank_start]coronary[blank_end] [blank_start]arteries[blank_end].

The death of ischemic heart muscle that is usually the result of blood clot to one of the larger coronary artery branches is knows as [blank_start]myocardial[blank_end] [blank_start]infarction[blank_end].

The cardiac veins drain into the right atrium through a common venous channel called the [blank_start]coronary[blank_end] [blank_start]sinus[blank_end].

The P Wave represents [blank_start]depolarization[blank_end] of the atria.

The QRS complex represents [blank_start]depolarization[blank_end] of the ventricles.

At the same time that the ventricles are depolarizing, the atria are [blank_start]repolarizing[blank_end].

The T wave reflects [blank_start]depolarization[blank_end] of the ventricles.

An inverted T wave is often seen following a [blank_start]myocardial infaction[blank_end].

Ventricular diastole begins with the isovolumetric ventricular relaxation period of the cardiac cycle.

A stenosed valve is narrower than normal.

Trace the blood flow through the heart by numbering the following structures in the corner sequence. Start with number 1 for the right atrium and proceed until you have numbered all the structures [blank_start]2[blank_end] right atrioventricular (tricuspid) valve [blank_start]6[blank_end] pulmonary veins [blank_start]5[blank_end] pulmonary arteries [blank_start]4[blank_end] pulmonary semilunar valve [blank_start]8[blank_end] left atrioventricular (mitral) valve [blank_start]9[blank_end] left ventricle [blank_start]1[blank_end] right atrium [blank_start]3[blank_end] right ventricle [blank_start]7[blank_end] left atrium [blank_start]11[blank_end] aorta [blank_start]10[blank_end] aortic semilunar valve