Answer:
Flexibility plays a big roll in determining my grandmother's level of activity because an elderly person who doesn't exercise at all won't be flexible, and they would haave trouble walking and doing everyday tasks. Meanwhile, an elderly persson who does excercise daily would be much more physically healthy and fit, and still have full movement even at an old age.
The muscular system is made up of over 600 muscles. These include three muscle types: smooth, skeletal, and cardiac. Only skeletal muscles are voluntary, meaning you can control them consciously.
The correct answer is B. controlling the flow of blood to the skin
The more blood there is, the more heat there will be because of blood. An easy example is when someone's ears get all red due to a blood rush to the ears. At that time, ears are also very warm.
