Muscle Physiology
A medical student is studying the structure and function of skeletal muscle. She is learning about the sarcomere as the fundamental contractile unit and the sliding filament theory of muscle contraction. Regarding sarcomere structure and the sliding filament mechanism:
Mark each as TRUE or FALSE
The sarcomere extends from Z-line to Z-line; the A-band contains the entire length of thick (myosin)...
The sliding filament theory states that actin and myosin filaments slide past each other without cha...
During contraction the A-band shortens; actin and myosin filaments shorten as they contract; ATP is ...
Titin is the largest known protein and acts as a molecular spring connecting the Z-line to the M-lin...
The length-tension relationship shows optimal force generation at sarcomere length of 2.0-2.2 microm...
Answer the questions to see explanations
Click T (True) or F (False) for each option