Complete Question:
How is cardiac muscle different from skeletal muscle?
A) contracts by the sliding filament mechanism
B) can vary force of contraction by varying calcium entering the cell
C) does not tetanize
D) two of the above are correct
E) all correct
Answer:
C) does not tetanize
Explanation:
The cardiac muscle is a muscle that is located at the heart. It is an involuntary muscle.
The skeletal muscle is a voluntary muscle that is located on the bones or the skeletal system. The skeletal muscle provides support to the bones and it also helps the bones to move.
One of the differences between the cardiac and skeletal muscles is that the cardiac muscles does not tetanize while the skeletal muscles can tetanize.
When a muscle is tetanized this means the muscle undergoes a long or sustained process of contraction.
The cardiac muscle does not tetanize because it cannot undergo such a long process of contraction.
The skeletal muscle on the other hand can be tetanized because it can undergo such a long process of contraction. This sustained process of contraction causes the muscles of the bones to shorten, and this causes or allows the bones to be able to move.
