[Answer] What is the light area of the sarcomere?

Answer: I Band
What is the light area of the sarcomere?

A sarcomere (Greek σάρξ sarx “flesh” μέρος meros “part”) is the complicated unit of striated muscle tissue. It is the repeating unit between two Z lines. Skeletal muscles are composed of tubular muscle cells (myocytes called muscle fibers or myofibers) which are formed in a process known as myogenesis. Muscle fibers contain numerous tubular myofibrils. Myofibrils are composed of repeating sections of sarcomeres which appear under the microscope as alternating dark and light bands. Sarcomeres are c…

The area between the Z-discs is further divided into two lighter colored bands at either end called the I-bands and a darker grayish band in the middle called the A band. The I bands appear lighter because these regions of the sarcomere mainly contain the thin actin filaments whose smaller diameter allows the passage of light …

Mon Aug 31 2015 14:30:00 GMT-0400 (Eastern Daylight Time) · The A-I junction is the junction between the A and I bands of the sarcomere which is the smallest unit of a muscle fiber.In skeletal muscle th…

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