CVS Practice Test 2025 - Free CVS Practice Questions and Study Guide

Cardiac muscle fibers exhibit a unique latticework pattern in their arrangement, which is essential for the heart’s function. This pattern is characterized by interconnected fibers that facilitate coordinated contractions of the heart muscle. The latticework structure allows for efficient transmission of electrical signals through gap junctions located at intercalated disks, promoting synchronized contraction of the cardiac muscle during each heartbeat.

In contrast, a linear pattern would suggest all fibers run parallel to one another, which is not the case in cardiac muscle. A spiral pattern, while observed in certain biological structures, does not accurately represent the arrangement of cardiac fibers, which instead connect in a more complex network. Similarly, a random pattern does not align with the organized and functional arrangement necessary for effective cardiac contractions. Thus, the latticework pattern is both structurally and functionally significant to the heart's ability to pump blood effectively.