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.
Top 10 facts about the world. The different organs in the muscular system include cardiac muscles, smooth muscles and skeletal muscles. A complete muscle â consisting of muscle fibers, connective tissue, nerve tissue and blood tissue â is considered one organ by itself. There are roughly 600 organs in the muscular system, and these muscles make up about 40 percent of the body. These organs can be divided into four major groups: the muscles of the lower extremity, the trunk muscles, the muscles of the upper extremity and head-and-neck muscles.