Which is characteristic of cardiac muscle tissue?

Question

Quizplus · Accepted Answer

Cardiac muscle tissue is characteristic in having gap junctions that allow for rapid and coordinated contraction of the heart.

Answer: A
 Another characteristic of cardiac muscle tissue is having a well-developed sarcoplasmic reticulum, which is responsible for calcium storage and release during muscle contraction.

Answer: C and E are incorrect choices. Cardiac muscle tissue exhibits an intrinsic contractile ability, meaning it can contract without external nervous stimulation (myogenic). Additionally, while the sarcoplasmic reticulum is important in calcium storage and release, calcium can also enter the cell from extracellular sources during muscle contraction. Choice B is incorrect because cardiac muscle has a slower myosin ATPase activity compared to skeletal muscle.

Which Is Characteristic of Cardiac Muscle Tissue