Sarcoplasm

Definition

Sarcoplasm is the cytoplasm of a muscle fiber that contains the organelles, including mitochondria and myoglobin, which store oxygen. It plays a crucial role in muscle contraction by providing a site for metabolic processes.

Related terms

Myofibril:

The long, cylindrical structures within muscle fibers that contain the fundamental units of muscle contraction, sarcomeres.

Mitochondria: The powerhouse organelles located in the sarcoplasm that produce ATP (energy) necessary for muscle contraction.

Myoglobin: A protein found in muscle tissue that binds oxygen molecules, making them readily available for muscular activity