Answer:
Calcium.
Explanation:
Muscle cells are the important for the body as they are involved in the bodily movement. Three different type of muscle are smooth muscle, cardiac muscle and skeletal muscle.
The sarcoplasmic reticulum contains the stored calcium in the muscle cell. The calcium is important ion that plays an important role in the muscle contraction. The actin and myosin protein functioning also depends on the the calcium ion.
Thus, the correct answer is option (B).
Fertility is the actual output of reproduction, and fecundity is the potential output
Yes, I think that by playing sports it will take my mind off of the whole pandemic and it will help me focus on my school work so I can continue to play the sport i choice to play
