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).
First one.) Listen to what they are going through and dont judge them. Also, talk to them in a calm gentle way so they dont feel frazzled or scared to open up. Dont pressure them.
Second one.) Ask them if they want to talk to someone more experienced. Tell them that its okay to wait a little bit before opening up to adults or other people for help.
Third one.) If the person doesnt want help but seriously needs it, go to a responsible adult and tell them about the problem. If your friend does want help, then take then to a trustworthy adult and explain the situation.
Hope this is helpful to you some^_^ have a great day!!
Answer:
You must be taking an test. Anyways the interesting thing about the heart it is the size of an adult fist.
