Unlike skeletal muscle, cardiac muscle ________.
A) has cells that are very long
B) lacks striations
C) has multiple nuclei per cell
D) has intercalated discs

Question

Quizplus · Accepted Answer

Cardiac muscle has unique features of intercalated discs, which are specialized junctions that allow individual muscle cells to communicate and work together as a unit. The intercalated discs help synchronize the contraction of the heart and allow it to function as an effective pump. Option A is incorrect because both skeletal and cardiac muscle cells are elongated, but cardiac muscle cells are typically shorter and more branching. Option B is incorrect because cardiac muscle, like skeletal muscle, exhibits striations due to the arrangement of contractile proteins. Option C is incorrect because cardiac muscle, like skeletal muscle, only has one nucleus per cell.

Unlike Skeletal Muscle, Cardiac Muscle ________