Question

Which of the following mineral is important for the proper functioning of heart and muscles?
a)iron b)calcium c)Magnesium d)Iodine

Answer 1

Explanation:

I think it's your answer

Calcium builds bones and teeth; activates enzymes throughout the body; helps regulate blood pressure; and helps muscles to contract, nerves to send messages, and blood to clot. ... Iron helps make hemoglobin (the oxygen-carrying chemical in the body's red blood cells) and myoglobin (a protein in muscle cells).

Answer 2

ANSWER:

BOTH 'B' & 'C'.

EXPLANATION:

• As you have probably guessed, the main function of the muscular system is movement, but it also helps stabilize our joints, maintain our posture and generate heat during activity. Movement of our body can be voluntary and controlled by the skeletal muscles, or it can be involuntary and controlled by smooth muscles.
• Calcium and magnesium work together to control muscle contraction. Muscle proteins require calcium to initiate contraction, and magnesium to initiate relaxation of muscle fibers. Magnesium also increases the absorption of calcium from blood, and it is required for protein synthesis and energy production.