Compared to Skeletal Muscle, Cardiac Muscle Differs in That It

Question

Compared to skeletal muscle, cardiac muscle differs in that it:
A) contracts for shorter periods of time.
B) has a short refractory period.
C) has a different arrangement of thick and thin filaments.
D) has branching cells.

Accepted Answer

Cardiac muscle cells are unique in that they have a branching structure, which allows them to interconnect with each other in a complex network. This is different from skeletal muscle cells, which are generally long, cylindrical, and arranged in parallel bundles.