Anyone who has ever experienced a toothache is aware of how severe tooth pain can be. In contrast, pain from swollen gums is barely noticeable. There are several reasons for toothaches and swollen gums, including cavities, infection and the perplexing fractured tooth syndrome.

Goose bumps appear due to an involuntary nervous system response called the pilomotor reflex. This primitive response occurs when hair follicles are stimulated by specific nerves in the skin, which triggers contraction of tiny muscle cells called arrector pili at the base of the hair follicles.

You shrug your shoulders and a sharp pain radiates from the shoulder joint to the surrounding muscles. Possible causes can range from a mild muscle tear to a nerve impingement. The location and quality of the pain you’re experiencing will help reveal the underlying cause.

Smoking harms nearly every organ of the body and can affect your overall health. Not surprisingly, it can also affect your tongue.

There are five types of membranes found within the body. Membranes are flat sheets of tissue that cover or line parts of the body and are typically composed of epithelial cells and connective tissue. Epithelial cells cover the inner and outer layers of surfaces and form glands that secrete fluids.

Working in unison, the joints, bones and skeletal muscles of the body comprise your musculoskeletal system. The primary function of these components working together is to create movement. Other functions include stability, posture and protection.

The human body is composed of thousands of different types of cells that carry out a wide range of specialized functions and work together to maintain optimal health and physical function.

Clean teeth and a healthy smile are a great formula for self-confidence. But if unsightly calcium deposits on your teeth have you hiding your smile, it doesn't have to be a permanent condition.

Getting tripped up during a sporting event or simply losing your balance while strolling down a sidewalk can have painful consequences. Your knee may take the hit or twist and bend awkwardly during a fall.

When attempting to gain muscle and improve your body composition, there are many types of workout programs you can use. One potential muscle-strengthening method is to train just one body part a day.

Paralysis, or the inability to move or feel part of the body, is a symptom of many disorders and afflictions. While paralysis can occur due to stroke or back injury, other causes of paralysis are less well known.

About 8.1 million people in the United States use marijuana, also called cannabis, on a daily or almost daily basis, reports the 2013 National Survey on Drug Use and Health. Like tobacco, marijuana smoke contains high concentrations of many chemicals, and some of them are known cancer-causing substances.