The ears are a pair of sensory organs whose primary functions are hearing and balance. They are divided into three portions: the outer ear, the middle ear, and the inner ear. Each has an intricate ...

The triceps, or triceps brachii, is the large muscle found at the back of the upper arm. Along with the other muscles of the arms and legs, the triceps muscle is a voluntary muscle, meaning it's a ...

Painful armpit lumps are often due to a swollen axillary lymph node under the armpit. This is usually a sign that the body is fighting an infection, but it can sometimes indicate cancer.