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Week 6
Muscle Contraction
Term | Definition |
---|---|
Sarcoplasmic Reticulum | membrane bound structure found in muscle cells. Similar to ER. Main function is to store Ca++ |
Myofibrils | bundles of very fine cytoskeletal filaments that extend lengthwise |
Sarcomere | basic contractile unit of muscle fiber. composed of actin and myosin |
lactate | chemical biproduct of anaerobic respiration. |
Thermogenesis | Process of heat production in organisms |
Twitch contraction | brief threshold stimulus produces a quick jerk of the muscle |
Myoglobin | functions as oxygen storage unit which then will produce oxygen to working muscles |
Treppe | gradual step like increase in the strength of contraction in a series |
Tetanus | sustained muscle contraction |
Syncytium | cardiac fibers form a continuous, electrically coupled mass |