A sulcus is the anatomical term for a furrow, fissure, crevice or a groove in the human body. Two examples are the central sulcus of the cerebellum which divides the frontal and parietal lobes, and the radial sulcus along the lateral border of the humerus which houses the radial nerve and the deep brachial artery.

An antigen is a substance either foreign or internal that triggers an immune response. This response is triggered by a histocompatibility molecule within each cell that can trigger an immune response.

The collection of specialized heart muscle cells which regulate the heart beat was discovered by the Swiss cardiologist Wilhelm His in 1893 and this given the name, Bundle of His.

It is important to know what the names of muscles refer to when remembering their locations. In this case, deltoid means triangular and, thus, the deltoid muscle is a triangular muscle.

A salt glow is a treatment in which the practitioner applies sea salts to the body in a rubbing fashion to exfoliate the skin.

The occipital muscles act to anchor the head during mastication but add stress and strain to the temporalis and masseter when the occipitals are hypertonic.

A condyle is a large rounded area on a bone, usually at a joint articulation. A trochanter is a large projection from a bone. A spine or spinous process is a flat ridge-like flange protruding from a bone, typically a vertebra.