ANATOMY

Detailed explanation-1: -A sarcomere extends from one Z disc to the successive Z disc. The Z disc serves to anchor the thin filaments to adjacent sarcomeres. Myofilaments occupy three-dimensional space. The arrangement of the myofilaments at different points in the sarcomere is shown in Figure 2-5, D and F.

Detailed explanation-2: -3 – The Sarcomere: The sarcomere, the region from one Z-disc to the next Z-disc, is the functional unit of a skeletal muscle fiber.

Detailed explanation-3: -The giant protein titin (connectin) extends from the Z-line of the sarcomere, where it binds to the thick filament (myosin) system, to the M-band, where it is thought to interact with the thick filaments.

Detailed explanation-4: -The area between two Z lines, a sarcomere, can be considered to be the primary structural and functional unit directly responsible for muscle contraction.…

Detailed explanation-5: -The Z-band (Z-line, Z-disc) defines the boundary of the sarcomere in striated muscle and bisects the I-band of neighbouring sarcomeres (Fig.