Exam 19: The Heart

Which of the following is not an age-related change in the heart?

Oxygen-poor blood returning to the heart enters the

Contraction of these structures tightens the chordae tendineae, preventing valve prolapse.

In atrial fibrillation, random waves of impulses within the atrial myocardium cause irregular stimulation of the ________, leading to irregular ventricular systole.

Prolapse of the atrioventricular valves is prevented by the chordae tendineae.

Parasympathetic impulses to the SA node are transmitted on this cranial nerve.

During left ventricular systole, blood enters the

The sequence of pericardial layers from superficial to deep is the fibrous, ________, and visceral pericardium.

To listen for the aortic semilunar valve on the chest wall, one would place the stethoscope in the

The heart chamber with the thickest wall is the

The most common congenital heart defects occur during the ________ month of development.

The term for pain caused by deficient blood delivery to the heart wall is

Large cardiac cells of the conducting system embedded in the ventricular walls between the endocardium and myocardium.

A drop of blood returning to the heart from the head region would enter the heart through which vessel?

The epicardium is the same as the

The ________ are subdivisions of the atrioventricular bundle located within the upper half of the interventricular septum.

Contraction of the heart proceeds first on the right side of the heart and second on the left.

Sounds of the aortic semilunar valve are heard in the second intercostal space at the right sternal margin.

Clinically, the posterior interventricular artery is referred to as the

The heart lies on the superior surface of the diaphragm, with its ________ anterior to the rest of the heart and just to the left of the midline.