Here is help in figuring out the information provided on food labels. Be sure you are getting the nutrition you need from the foods you eat.

See how muscle cells in the heart contract by allowing calcium to flow inside and bringing along some positive charge with it! [12:10]

This video explains how the endocrine system plays an important role in calcium homeostasis through its effect on bone remodeling and its effect on calcium absorption. [8:22]

This lesson will describe the effects that exercise and nutrition have in the health of your skeletal system. It is 1 of 4 in the series titled "Skeletal Health."