The temporomandibular joint (TMJ) connects the lower jaw to the skull. You can feel your two TM joints and their movement by placing your fingers directly in front of your ears and opening your mouth.

A wet dream — also called a nocturnal emission — is when a male ejaculates or "cums" while sleeping. During ejaculation, semen (the fluid that carries sperm) comes out of the penis. When you wake up ...

Utilizar un condón al mantener relaciones sexuales puede ayudar a prevenir las enfermedades de transmisión sexual (ETS) y el embarazo. Pero utilizar dos preservativos a la vez no te proporcionará ...

What Do the Kidneys Do? The kidneys have many important jobs. They make important hormones and, as the body's filtering system, help control water levels and get rid of wastes through urine (pee).

It's no surprise that parents might need some help understanding what it means to eat healthy. From the MyPlate food guide to the latest food fad, it can be awfully confusing. The good news is that ...

What Is a VP Shunt? A ventriculoperitoneal (VP) shunt is a thin plastic tube that helps drain extra cerebrospinal fluid (CSF) from the brain. CSF is the saltwater that surrounds and cushions the brain ...

When your child is sick or injured, it's natural to want to head straight for the emergency room (ER). You know that you can get care, no matter the time, day, or severity of your child's injury. In ...

Inhalants are things that are breathed in (inhaled) to give the user an immediate rush, or high. They include glues, paint thinners, dry cleaning fluids, gasoline, felt-tip marker fluid, hair spray, ...

We see and hear about hearts everywhere. A long time ago, people even thought that their emotions came from their hearts, maybe because the heart beats faster when a person is scared or excited. Now ...

What Is a Perforated Eardrum? A perforated eardrum is a tear or hole in the ear's tympanic membrane (the eardrum). A perforated (PER-fer-ate-id) eardrum can hurt, but most heal in a few days to weeks.

What Is Polycystic Ovary Syndrome (PCOS)? Polycystic (pronounced: pol-ee-SISS-tik) ovary syndrome (PCOS) is a common health problem that can affect teen girls and young women. It can cause irregular ...

Every single person has a skeleton made up of many bones. These bones give your body structure, let you move in many ways, protect your internal organs, and more. It's time to look at all your bones — ...