Medically reviewed by Sukaina Hasnie, MD Key Takeaways The outer, middle, and inner ear have unique structures that help with ...

Your nose is a vital organ that plays a central role in bodily functions like breathing and smelling. However, there are additional functions that your nose participates in. Likewise, there are a few ...

One of the main functions of the skeleton is to protect our squishy internal organs, but another important function is to help us move; bones act as levers with the assistance of ...

The obturator nerve is a large, multibranched nerve that travels through your pelvis to your inner thigh. This nerve helps you feel sensations like temperature and pain in your lower limbs. It also ...

A computer-generated image of red blood cells. Nitric oxide—known by the formula NO—is so vital for humans’ internal physiological processes that it was crowned Molecule of the Year in 1992. It plays ...

The liver hilum, which some people know as the porta hepatis or hilum of the liver, is a fissure or opening between two sections, or lobes, of the liver. The liver hilum allows structures including ...

The rotator cuff is a set of muscles that helps the arm and shoulder move. Injuries to the rotator cuff are fairly common, but many effective treatments are available. These muscles work together to ...