Answer
The major functions of connective tissues are protection and support. Auxillary functions include the binding of one tissue to another, nutrition and waste removal, and service as levers in exertion of effort (power) by muscles.
Work Step by Step
1. Collagen and elastin and reticular fibers form the stromal framework of many organs such as lymph nodes, spleen, liver, and kidneys.
2. Support. Cartilage supports structures such as ears and nose. Bone supports the weight of the body and gives shape to the entire organism.
3. Protection. Cranial bones protect the brain, and the bones of the ribs and and sternum protect the delicate vital organs of the thoracic cavity.
4.Binding. Tendons bind muscles to bones; ligaments bind bone to bone, and a fibrous connective tissue layer (the hypodermis) binds skin to underlying tissues.
In addition, areolar connective tissue nourishes overlying epithelia. Blood transports nutrients and oxygen to many other tissues, and removes their wastes and carbon dioxide. Furthermore, both blood and lymphatic tissue function to provide immune defense for other tissues. Adipose tissue may function in energy, and heat production, as a cushion in providing shape, and as a binding tissue. Finally, bone not only protects and supports other tissues, but it is an erythropoietic organ and functions as a lever in muscular effectuation of locomotion, and other forms of muscular motion.
