San Diego has on average 146 sunny days and 117 partly cloudy days a year. The average annual precipitation is less than 12 inches (300 mm), resulting in a borderline arid climate.
Skeletal muscle makes up the bulk of muscles in the body. See also skeletal muscle groups. A whole skeletal muscle is considered an organ of the muscular system. Each organ or muscle consists of skeletal muscle tissue, connective tissue, nerve tissue, and blood or vascular tissue. Skeletal muscles vary considerably in size, shape, and arrangement of fibers.
Organization of Skeletal Muscle. Our bodies contain numerous skeletal muscle organs-for example, the biceps brachii of the arm and the gastrocnemius of the leg. The muscles that move and support our body are attached to bones at each end by what we call tendons.he muscle fiber membrane is called the sarcolemma. Skeletal muscle cells or fibers are composed of hundreds to thousands of contractile organs that we call myofibrils. Each myofibril runs the length of the muscle fiber. Remember, muscle fibers run the length of the muscle organ.