CHAPTER 6 EXAM II

The middle layer of the heart muscle is called the:

• Endocardium

• Myocardium

• Epicardium

• Pericardium

The four chambers of the heart include the:

• Four sided ventricles

• Right and left atria and ventricles

• Four sided atria

• Superior and inferior chambers

The receiving chambers of the heart are the:

• Atria

• Chordae tendineae

• Venae cavae

• Ventricles

The heart is surrounded by a thin, fluid-filled sac called the:

• Endocardium

• Myocardium

• Epicardium

• Pericardium

The lower chambers of the heart are called:

• Atria

• Septum

• Valves

• Ventricles

The relaxing phase of the cardiac cycle is called:

• Bradycardia

• Diastole

• Infarction

• Systole

The structure dividing the right and left halves of the heart is called the:

• Atrium

• Pericardium

• Chordae tendineae

• Septum

The inner layer of a blood vessel is called the tunica:

• Adventitia

• Intima

• Interna

• Media

Which of the following represents the proper direction blood flows?

• Arteries, veins, capillaries

• Capillaries, arterioles, arteries

• Arterioles, capillaries, venules

• Veins, venules, capillaries

Arteries have which of the following characteristics?

• Transport deoxygenated blood toward the heart

• Transport oxygenated blood away from the heart

• Vessels linking arterioles and venules

• They carry only red blood cells