Anatomy

Cartilage model is covered with perichondrium that is converted to periosteum Diaphysis-central shaft Epiphysis-located at either end of the diaphysis Growth in length of the bone is provided by the emetaphyseal plate located between the epiphyseal cartilage and the diaphysis Blood capillaries and the mesenchymal cells infiltrate the spaces left by the destroyed chondrocytes Osteoblasts are derived from the undifferentiated cells; form a…

Articulations Classified according to their structure, composition,and movability •    Fibrous joints-surfaces of bones almost in direct contact with limited movement     o    Syndesmosis-two bones united by interosseous ligaments     o    Sutures-serrated margins of bones united by a thin layer of fibrous tissue     o    Gomphosis-insertion of a…

The Parotid Glands The parotid glands are the largest of the three pairs of salivary glands. Each gland is wedged between the mandible and the sternocleidomastoid muscle and partly covers them. The parotid gland is wrapped with a fibrous capsule (parotid fascia) that is continuous with the deep investing fascia of the neck. Viewed superficially, the parotid gland is somewhat triangular in shape. Its apex is posterior to the angle of the ma…

CARTILAGE There are 3 types: Hyaline cartilage Elastic cartilage Fibrocartilage Matrix is made up by: Hyaluronic acid Proteoglycans   - In cartilage the protein core of the proteoglycan molecule binds through a linking protein to hyaluronic acid to form a proteoglycan aggregate which binds to the fibres - In the matrix there are spaces, lacunae in which one to three of the cells of cartilage, chondrocytes, are found - The matrix around…

The skull, the skeleton of the head, is the most complex bony structure in the body because it: Encloses the brain, which is irregular in shape; Houses the organs of special senses for seeing, hearing, tasting, and smelling; and Surrounds the openings in to the digestive and respiratory tracts.   In the anatomical position, the skull is oriented so that the inferior margin of the orbit (eye socket) and the superior margin of the external ac…