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Chapter Assessment Lesson 11.1
Learning Key Terms and Concepts
The myocardium is the _____.
A. sac surrounding the heart
B. thick, muscular wall of the heart
C. inner lining of the heart
D. septum between the chambers of the heart
The bicuspid (mitral) valve is located between the _____.
A. right and left ventricles
B. left atrium and left ventricle
C. left and right atria
D. left ventricle and the aorta
The fluid-filled, double-walled sac that surrounds the heart is called the _____.
A. pericardium
B. endocardium
C. myocardium
D. epicardium
The heart is flanked on either side by the _____.
A. diaphragm
B. lungs
C. hips
D. sternum
The "lub" of the heart's "lub-dub" sound is caused by the closing of the _____ valves.
The wall that separates the atria from each other is called the _____.
Attached to the cusps of heart valves are thin, fibrous cords called _____, which are connected to _____ muscles.
Thinking Critically
What do you think would happen if the interventricular septum had a hole in it?
It is widely believed that arteries only carry oxygenated blood and veins carry only deoxygenated blood. Is this a correct statement? Explain and defend your answer.
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