Skeletons in Animals. Movement is one of the essential features of living things. Cellular movement is observed in one-celled amoebas, ciliates, and flagellates. ... contract, and the contractions squeeze internal fluid (the hydrostatic skeleton) against the skin, causing the worm to stiffen and the body to shorten and widen. read more
The skeleton is necessary to provide the body with shape, structure and support. It also serves to protect the internal structures of the body. Several components make up the skeleton, including the connective tissues, bone, cartilage, tendons and ligaments. read more
The skeleton provides a structure to support the body's organ systems and tissues. In addition, the skeleton also protects the internal organs, enables movement by providing a structure for the muscles to attach to and stores bone marrow, which is used to produce red and white blood cells, according to PT Direct. Keep Learning. read more
In many animals, the movement process is centered in the muscle cell, which contracts and relaxes. The contraction yields great force, which is applied against a surface by means of a skeleton. Skeletal systems provide structure and protection for a variety of organisms. A water-based skeleton provides the structure necessary for movement in worms. read more