Looking for an alarm system to make you feel more secure? We've tested all the best professional and DIY home security systems to help you decide which is right to protect your family and property.

The skeletal system includes your bones, ligaments that attach bone to bone, and cartilage that provides padding between your bones. Bones fall into two main categories. The axial skeleton contains ...

What Is the Nervous System? Your nervous system is your body's main communication system. It sends messages from your brain to the rest of your body and helps you respond to changes inside and ...

Finding your body mass index, or BMI, is one way to help you figure out if you are at a healthy weight. BMI is a number based on height and weight. It can be used to place a person in categories ...

Skeletal muscle activity is continuously modulated across physiologic states to provide coordination, flexibility and responsiveness to body tasks and external inputs. Despite the central role the ...