Answer
The duration of the action potential (AP) in cardiac muscle fibers is about 300 msec. This is longer than the duration of the AP in skeltal muscle fibers, and axons, 1-3 msec
Work Step by Step
The duration of action potentials varies in cardiac muscle fibers, skeletal muscles and axons , and smooth muscles; In cardiac musces an AP lasts for 200 -400 msec; in skeletal muscles and axons the duration of the AP is briefer, about 1-3 msec; in smooth muscles the action potential typically lasts for 50-100 msec- but may persist for as long as 1000msec
