Pylorus Definition It is a small constriction at the lower end of the stomach that directly opens into the duodenum. The aperture generally marks the end of the stomach and the beginning of the small intestine. It is often mistaken as keratosis pilaris, a common, autosomal dominant condition marked by rough, red, bumps on the skin. Pylorus Location [...]
Ischial tuberosity Definition It is a large bony projection at the junction of the lower end of the body of the left and right ischium, the lower back part of the hip bone, and its ramus. It is also known by several other names like: Tuber ischiadicum Tuberosity of the ischium Sitting bone Sitz bone
Xiphoid process Definition It is a small cartilaginous projection of the lower portion of the breastbone or sternum that ranges in size from miniscule to several inches in length. The term “xiphoid” is derived from the Greek word xiphos, meaning straight sword. The tapered piece of bone is also known by the following names: Metasternum Xiphisternum [...]
Platysma Definition It is a subcutaneous muscle present under the chin that overlies the sternocleidomastoid. It belongs to the group of cross-striated musculature. Platysma Location It usually occurs as a pair of broad sheet of muscles on either side of the anterior neck.
Cephalic vein Definition It is the subcutaneous vein of the upper extremity. It is sometimes denoted as “antecubital vein”. The term cephalic refers to anatomy of the head. Cephalic vein Location It is located on the lateral side of the left and right arm that runs from the hand to the shoulder. It is not a deep or distal [...]
Epiphysis Definition It is a vital growth area near the end of a long bone, which later fuses with the main bone through ossification. It is further divided into proximal, radial and distal sections. It is often mistaken for epiphysis cerebri, a small endocrine gland in the brain. Its plural is epiphyses.
Orbicularis oculi Definition It is a circular band of muscle that surrounds the eye. It is generally a sphincter muscle that lies in the tissue of the eyelid and performs a host of ocular functions.
Definition of Periosteum It is a dense fibrous membrane made up of irregular connective tissue that covers the external surface of the bones. It is completely opposite to endosteum that lines the inner cavity of long bones. The tissue however, does not line the joints of long bones and is replaced with a cartilage, which prevents bones [...]
Deltoid tuberosity Definition It refers to a bumpy area on the shaft of the humerus which the deltoid muscle is attached to. The word “Tuberosity” comes from the term “Tuber” which is of Latin origin and means “A lump.”
Posterior pituitary Definition It is a section of the endocrine system that comprises of the posterior lobe of the pituitary gland. It is also known by the name “neurohypophysis.”
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