What Is Muscle?
What Is Muscle? Muscle is the body tissue which, because it has the power of contraction, enables the higher animals to move their bodies. Muscles are divided into two...
Read More
What Is the Uvula?
What Is the Uvula? The uvula is a small mass of muscle covered by mucous membrane that hangs down from the middle of the soft palate at the back of the mouth. The soft...
Read More
Where Is the Aorta?
Where Is the Aorta? The aorta is the great artery rising from the left side of the heart, through which the blood passes on its way to all parts of the body except the...
Read More
Why Do You Sometimes Get a Pain in Your Side When You Run?
Why Do You Sometimes Get a Pain in Your Side When You Run? The sharp pain that you sometimes feel in your side when you’re running is called a stitch. A stitch is...
Read More
Why Do My Muscles Grow Tired When I Exercise?
Why Do My Muscles Grow Tired When I Exercise? If you use your muscles for a long time when you exercise, a waste material called “lactic acid” collects in...
Read More