BIO203H5 Lecture Notes - Sliding Filament Theory, Skeletal Muscle, Globular Protein
Document Summary
Chapter 46: animal sensory system and movment (pg. 1095-1101) Information about the environment is useless unless an animal can respond to it in an appropriate way, usually by moving. Locomotion, or the movement of an entire animal, is only one type of movement. Skeletons provide attachment sites for muscles and a support system for the body"s soft tissues. Exoskeletons are hard, hollow structures that envelop the body. Hydrostatic skeletons use the pressure of internal body fluids to support the body. Endoskeletons are hard structures inside the body that are composed of the connective tissues cartilage and bone. Cartilage is made up of cells scattered in a gelatinous matrix of polysaccharides and protein fibres. Bone is made up of cells in a hard extracellular matrix of calcium phosphate with small amounts of calcium carbonate and protein fibres. Bones meet and interact at articulations, or joints. Bones articulate in ways that allow limbs to swivel, hinge, or pivot.
