The extracellular matrix contains proteins, the chief and most abundant of which is collagen.
Collagen plays a major part in organizing and maintaining tissues.
Microscopic anatomy is the study of structures on a microscopic scale, along with histology (the study of tissues), and embryology (the study of an organism in its immature condition).
Methods used include dissection, in which a body is opened and its organs studied, and endoscopy, in which a video camera-equipped instrument is inserted through a small incision in the body wall and used to explore the internal organs and other structures.
The matrix can be modified to form a skeleton to support or protect the body.
An exoskeleton is a thickened, rigid cuticle which is stiffened by mineralization, as in crustaceans or by the cross-linking of its proteins as in insects.Vacuoles, when present, are more in number and much smaller than those in the plant cell.The body tissues are composed of numerous types of cell, including those found in muscles, nerves and skin.Methods have also improved dramatically, advancing from the examination of animals by dissection of carcasses and cadavers (corpses) to 20th century medical imaging techniques including X-ray, ultrasound, and magnetic resonance imaging.anatomy is the scientific study of the structure of organisms including their systems, organs and tissues.Connective tissue gives shape to organs and holds them in place.The main types are loose connective tissue, adipose tissue, fibrous connective tissue, cartilage and bone.Metazoans do not include the sponges, which have undifferentiated cells.Unlike plant cells, animal cells have neither a cell wall nor chloroplasts.Animal tissues can be grouped into four basic types: connective, epithelial, muscle and nervous tissue.Connective tissues are fibrous and made up of cells scattered among inorganic material called the extracellular matrix.