BIOL 1107 Lecture Notes - Lecture 48: Myosin Head, Myocyte, Cardiac Muscle
Document Summary
Information about the environment is useless unless an animal can respond to it in an appropriate way, usually by moving. Locomotion is the movement of an entire animal; however, it is only one type of movement in animals: sessile animals rely on internal movements, such as those of the heart muscle or gills, to accomplish internal processes. In order to produce movement, muscles must pull against resistance such as that provided by a skeleton. Locomotion allows animal to physically move itself from point a to point b. Skeletons provide attachment sites for muscles and a support system for the body"s soft tissues. Three types of skeletons are found in animals: 1. Exoskeletons are hard, hollow structures that envelop the body: 2. Hydrostatic skeletons use the pressure of internal body fluids to support the body: 3. Hydrostatic skeletons: protein and crystal structure and osmotic pressure: seen in less complex animals, sponges.
