1) The heart enclosed by the A) pleural cavity. B) peritoneal cavity. C) : 1200308

1) The heart enclosed by the
A) pleural cavity.
B) peritoneal cavity.
C) : 1200308.

1) The heart is enclosed by the

A) pleural cavity.

B) peritoneal cavity.

C) cardiac skeleton.

D) mediastinum.

E) coronary sinus.

2) The wall between the atria is called the

A) ventricle.

B) coronary sinus.

C) coronary sulcus.

D) auricle.

E) interatrial septum.

3) The loose-fitting sac around the heart is lined by the

A) parietal pericardium.

B) epicardium.

C) endocardium.

D) parietal myocardium.

E) parietal endocardium.

4) The innermost layer of the heart wall is the

A) mediastinum.

B) parietal pericardium.

C) epicardium.

D) myocardium.

E) endocardium.

5) The skeleton of the heart consists of

A) a reticular connective tissue within the myocardium.

B) a bone in the interatrial septum.

C) a bone in the interventricular septum.

D) dense bands of tough, elastic connective tissue that encircle the heart valves and the bases of the aorta and pulmonary trunk.

E) fibrous connective tissue in the auricle of the atrium.

6) Blood returning directly from the systemic circulation enters the

A) right atrium.

B) right ventricle.

C) left atrium.

D) left ventricle.

E) pulmonary trunk.

7) The tricuspid valve is located

A) in the opening of the aorta.

B) in the opening of the pulmonary trunk.

C) where the vena cavae join the right atrium.

D) between the right atrium and right ventricle.

E) between the left atrium and left ventricle.

8) The left and right coronary arteries supply blood to the muscle tissue of the

A) intestines.

B) head.

C) brain.

D) heart.

E) liver.

9) The great and middle cardiac veins drain blood directly into the

A) superior vena cava.

B) inferior vena cava.

C) coronary sinus.

D) coronary sulcus.

E) aorta.

10) The semilunar valves prevent backflow into the

A) atria.

B) aorta.

C) ventricles.

D) pulmonary trunk.

E) venae cavae.



1) The heart enclosed by the
A) pleural cavity.
B) peritoneal cavity.
C) : 1200308

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