1. Anything that shows a graduated step like change. 2. Cardiac muscle. The increase in the force when a heart rate increases. 3. Skeletal muscle. The increase in contractions when a stimuli sequence is applied to a resting muscle.

STAIRCASE PHENOMENON: "The staircase phenomenon shows a graded step increase."
Cite this page: N., Pam M.S., "STAIRCASE PHENOMENON," in, April 13, 2013, (accessed October 20, 2021).