Cardiac muscle has prolonged contraction due to a sodium induced-calcium released process into the cytoplasm of the cell. cardiac cells can communicate through pore-like channels between cells. list the junction and the organelle involved in cardiac muscle contraction?

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

your answer is e- polar easterlies

humanities is your correct answer!

explanation:

humanities is the study of the human culture. this is also the study of human processes and experiences. for us to understand and experience the world, we have used different methods or ideas through philosophy, arts, music, religion, art, economics, sociology.