connective tissue, Tissue in the body that maintains the form of the body and its organs and provides cohesion and internal support, including bone, ligaments, tendons, cartilage, adipose tissue, and aponeuroses. Its major components are different kinds of cells and extracellular fibres and ground substance, which varies in consistency from thin gel to rigid structure. Various combinations of these elements make up the different kinds of connective tissue. Connective tissue diseases are either genetic disorders, attacking one of its elements (e.g., Marfan syndrome), or acquired inflammatory or immune-system diseases (e.g., rheumatoid arthritis, osteoarthritis, systemic lupus erythematosus, and rheumatic fever).
connective tissue Article
connective tissue summary
Below is the article summary. For the full article, see connective tissue.
bone Summary
Bone, rigid body tissue consisting of cells embedded in an abundant hard intercellular material. The two principal components of this material, collagen and calcium phosphate, distinguish bone from such other hard tissues as chitin, enamel, and shell. Bone tissue makes up the individual bones of
muscle Summary
Muscle, contractile tissue found in animals, the function of which is to produce motion. Movement, the intricate cooperation of muscle and nerve fibres, is the means by which an organism interacts with its environment. The innervation of muscle cells, or fibres, permits an animal to carry out the