Zambia is in Southern Africa, east of Angola, between 150 00 S and 300 00 E with an area of 752,614 sq km out of which 740,724 sq km are land and 11,890 sq km water (The World Factbook, 2006).
-There are two main parts of the striation pattern of skeletal muscle fibers: * The light bands (I bands) are made up of tink filaments of actin attached to Z lines.*The dark bands (A bands) are made up of thick filaments of myosin that overlap thin filaments of actin.There are two main parts of the striation pattern of skeletal muscle fibers: * The light bands (I bands) are made up of tink filaments of actin attached to Z lines.
There are two types: MYOSIN-thick filaments ACTIN-thin filaments. Structure of a SARCOMERE (functional unit of a muscle). Actin and Myosin filaments are arranged in an overlapping pattern of light (I bands) and dark (A bands). In the middle of each I band is a line called a Z line.The section of a myofibril from one Z-line to the next Z-line is the SARCOMERE.. Muscle and Muscle Fiber Structure: A muscle is composed of many muscle fibers (muscle fiber = muscle cell). The individual muscles are separated from each other and held in place by a covering called the FASCIA.