Muscle Biology
A medical student is learning about muscle physiology in preparation for their orthopaedic surgery rotation. They are studying how skeletal muscle generates force and the factors affecting muscle function, particularly relevant to understanding conditions such as muscle strains, compartment syndrome, and the effects of immobilization. Regarding skeletal muscle physiology:
Mark each as TRUE or FALSE
The sarcomere is the basic contractile unit bounded by Z-lines; it contains thick filaments (myosin)...
Excitation-contraction coupling involves: action potential at neuromuscular junction, propagation al...
The A-band shortens during contraction; calcium binds to tropomyosin; ATP is required for muscle con...
Muscle fiber types include: Type I (slow oxidative - red, fatigue-resistant, endurance, postural mus...
The length-tension relationship shows optimal force at sarcomere length of 2.0-2.2 micrometers (opti...
Answer the questions to see explanations
Click T (True) or F (False) for each option