Which of the following statements regarding the heart is NOT true?
a. The heart has four chambers.
b. The heart is divided into left and right halves by the septum.
c. The heart is composed of smooth muscle fibers.
d. The heart is a muscular pump.
c
Explanation:
a. The heart has four chambers: a true statement
b. The heart is divided into left and right halves by the septum: a true statement
c. The heart is composed of smooth muscle fibers: correct
d. The heart is a muscular pump: a true statement
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