1.
The _______ is a four-chambered, hollow, muscular organ that has a cone-shape.
2.
The size of the heart is about _____ cm long and ___ cm wide.
A. 
B. 
C. 
D. 
E. 
3.
The heart is located within the ______ and rests on the ______ and is slightly _____ of the midline.
4.
The heart is bordered laterally by the _______, posteriorly by the ___________ and anteriorly by the ________.
5.
The ______ of the heart is the broader portion and is directed __________.
6.
Which of the great vessels emerge from the base of the heart?
A. 
B. 
C. 
D. 
E. 
7.
The ______ of the heart is the distal portion and is made up largely of the tip of the ________ at the level of the _____________.
8.
The exact position of the ___________ varies somewhat from person to person. It is located at the ________ and to the _______ of the sternum. It is possible to either palpate or hear it at this location.
9.
The heart and the origins of the great blood vessels are enclosed in a loose fitting sac termed the ____________ which consists of two layers.
A. 
B. 
C. 
D. 
E. 
10.
What is the outer layer of the pericardium that is a loose fitting sac that is composed of thick, white fibrous CT called?
A. 
B. 
C. 
D. 
E. 
11.
The __________ anchors the heart in the mediastinum.
12.
What is the name of the delicate inner layer of the sac that covers the heart?
A. 
B. 
C. 
D. 
E. 
13.
Another name for the visceral pericardium is the __________.
A. 
B. 
C. 
D. 
E. 
14.
The visceral pericardium folds back upon itself and becomes the _______________.
A. 
B. 
C. 
D. 
E. 
15.
The parietal pericardium forms the inner lining of the _________.
A. 
B. 
C. 
D. 
E. 
16.
The space between the visceral and parietal layers is called the ___________. It contains about __________ ml of pericardial fluid.
17.
The _________, the _________ and the ___________ are the three layers that compose the wall of the heart.
18.
The _________ serves as the protective outer covering of the heart. It is a _______ that consists of ____ covered by __________.
19.
The ______ constitutes the greatest mass of the heart wall.
A. 
B. 
C. 
D. 
E. 
20.
The _____ is the protective inner lining of the heart.
A. 
B. 
C. 
D. 
E. 
21.
The endocardium lines the ________, ______ and is continuous with the ________ that enter and leave the heart.
22.
_______ are specialized cardiac muscle fibers that are involved with the conduction system of the heart and are found in the endocardium.
A. 
B. 
C. 
D. 
E. 
23.
_______ are blood vessels that carry blood to the heart, and ________ are blood vessels that carry blood away from the heart.
24.
The ________ contains blood and lymph capillaries and nerve fibers.
A. 
B. 
C. 
D. 
E. 
25.
_______ may be noted in the deeper portion of the epicardium along paths
of large blood vessels.
A. 
B. 
C. 
D. 
E.