Final answer:
c. cell membrane is the sacrolemma of a skeletal muscle fiber.
Step-by-step explanation:
The sacrolemma of a skeletal muscle fiber refers to the c.cell membrane that surrounds the muscle cell or muscle fiber. In the context of skeletal muscle, the sacrolemma is crucial for maintaining the integrity of the muscle cell, regulating the passage of ions, and facilitating communication between the muscle cell and its external environment.
The term "sacrolemma" is specific to skeletal muscle fibers and is synonymous with the cell membrane or plasma membrane of these cells. The sacrolemma encompasses the entire muscle fiber and plays a vital role in muscle contraction and communication.
It is involved in the transmission of action potentials along the muscle fiber, leading to the release of calcium ions from the sarcoplasmic reticulum and ultimately initiating muscle contraction. Additionally, the sacrolemma is responsible for the exchange of nutrients and waste products between the muscle fiber and its surrounding environment.
Understanding the terminology associated with muscle physiology is essential for comprehending the intricate processes involved in muscle function. The sacrolemma's role as the cell membrane of skeletal muscle fibers underscores its significance in maintaining the structural and functional integrity of these cells during various physiological processes, including contraction and relaxation.