Exam chapter 15 Anatomy and Physiology

ch15
Student: ___________________________________________________________________________

1.

The heart pumps about ____ liters of blood a day and contracts about _____ times in a lifetime.
A. 1,000 liters; 1 billion
B. 1,200 liters; 2 billion
C. 3,000 liters; 2 billion
D. 7,000 liters; 2.5 billion

2.

Circulation is vital because it
A. supplies oxygen and nutrients to and removes wastes from tissues.
B. inflates the lungs.
C. delivers carbon dioxide to tissues and removes excess oxygen.
D. delivers wastes to tissues.

3.

The pulmonary circuit
A. sends oxygen-poor blood to the heart.
B. sends oxygen-poor blood to the tissues.
C. sends oxygen-poor blood to the lungs.
D. brings oxygen-rich blood from the tissues.

4.

The systemic circuit
A. sends oxygen-poor blood to the heart.
B. brings oxygen-rich blood from the tissues.
C. brings oxygen-poor blood from the lungs.
D. sends oxygen-rich blood to the tissues.

5.

When the ventricular walls contract,
A. the mitral valve opens and the tricuspid valve closes.
B. the tricuspid valve opens and the mitral valve closes.
C. the mitral and tricuspid valves close.
D. the mitral and tricuspid valves open.

6.

The loose-fitting sac around the heart is the
A. fibrous pericardium.
B. visceral pericardium.
C. epicardium.
D. endocardium.

7.

The skeleton of the heart consists of
A. bone within the myocardium.
B. bone within the interatrial septum.
C. fibrous connective tissue in the endocardium.
D. fibrous connective tissue encircling the atrioventricular orifices.

8.

Which of the following is the correct sequence of parts through which blood moves from the vena cava to the lungs?
A. Right atrium, pulmonary valve, right ventricle, tricuspid valve
B. Right atrium, tricuspid valve, right ventricle, pulmonary valve
C. Right ventricle, tricuspid valve, right atrium, pulmonary valve
D. Right ventricle, pulmonary valve, right atrium, tricuspid valve, right ventricle