Chapter 1 Cardiac Anatomy and Physiology

The normal heart is the size of a

• foot

• cherry

• man's fist

• watermelon

The top of the heart where the great vessels emerge is the

• apex

• base

• chordae tendonae

• tricuspid valve

The fibrous tissue that divides the heart into right and left sides is the

• chordae tendonae

• papillary muscle

• septum

• pulmonic valve

The apex of the heart is located at the

• top of the heart, where the great vessels emerge.

• right side of the heart

• bottom of the heart, at the leftmost tip

• back wall of the heart

Pericardial fluid

• decreases friction of the pericardial layers as they rub against each other

• prevents backflow of blood from one chamber to the other

• circulates through the heart's chambers

• lubricates the electrical system of the heart

The innermost layer of the heart is the

• epicardium

• pericardium

• endocardium

• myocardium

The layer of the heart that is damaged during a heart attack is the

• epicardium

• pericardium

• endocardium

• myocardium

Which of these statements about the pericardium is NOT true?

• It anchors the heart to the diaphragm and great vessels.

• It is a two-layer sac enclosing the heart.

• It serves as protection for the heart.

• It is the wall of the heart that is damaged in a heart attack.

Which of the following statements about the right atrium is TRUE?

• It is a receiving chamber for oxygenated blood returning from the lungs.

• It is the major pumping chamber of the heart.

• It is about 100% saturated with oxygen.

• It is the receiving chamber for deoxygenated blood coming from the vena cava.

Which heart chamber delivers oxygenated blood to the entire body?

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle