MUSCLE PHYSIOLOGY

Detailed explanation-1: -Sarcoplasm is the cytoplasm of a muscle cell. It is comparable to the cytoplasm of other cells, but it contains unusually large amounts of glycogen (a polymer of glucose), myoglobin, a red-colored protein necessary for binding oxygen molecules that diffuse into muscle fibers, and mitochondria.

Detailed explanation-2: -The cell membrane of a muscle cell is known as the sarcolemma and the cytoplasm is called sarcoplasm.

Detailed explanation-3: -The sarcolemma is the plasma membrane of the muscle cell and is surrounded by basement membrane and endomysial connective tissue.

Detailed explanation-4: -The sarcoplasm contains myoglobin, a hemoprotein that reversibly binds oxygen and functions as a molecule for storage and transport of O2 within the muscle.

Detailed explanation-5: -Sarcoplasmic Organelles The abundant sarcoplasm (i.e., cytoplasm) within the core of the myotube between and around nuclei contains membranous organelles. These are mitochondria with well-formed cristae, Golgi apparatuses generally located at the end of a nucleus, and single-membrane vesicles.