Anatomy and Physiology
December 14, 2011
Skeletal System and Muscular System
In anatomy and physiology we study the structure of living things and the function of living systems. In physiology, the scientific method is applied to determine how different organisms, organ systems, organs, cells, and biomolecules carry out the chemical or physical function that they have in the living system. Both anatomy and physiology are subcategories of biology. Throughout our class we have discussed many different systems of the body. One system that is very important to the human body is the muscular system, which consists of three different types of muscle tissue. Along with the muscular system is the skeletal system, which consists of the bones and the different types of tissue it contains. Both of these systems have many different functions, and can be interconnected together. These two systems work together and they form the musculoskeletal system. The muscular system consists of three different types of muscle tissue and it has four different functions. The muscular system also encompasses many properties. The three different types of muscle tissues it includes are skeletal muscle, cardiac muscle, and smooth muscle. The skeletal muscle’s main function is to move the bones of the skeleton. This muscle is voluntary and is also striated, meaning that it is striped, which is due to the muscle fibers that are combined into parallel fibers. Some of these muscles can be controlled unknowningly. For example, the diaphragm of the human body continues to alternately contract and relax while we are asleep, allowing our lungs to expand to breathe. The cardiac muscle tissue is found only in the heart. It is similar to the skeletal muscle in that it is striated, but it is also different in that it is involuntary. The smooth muscle tissue can be found within the walls of the digestive tract, blood vessels, and airways of the respiratory system. This...