Explain how your musculoskeletal system uses this mechanism to generate force. What is represented by (1) and (2) in the third figure? In comparison to the other mechanisms available to generate force (by muscles), how effective is this mechanism for controlling the generation of force?

44. What are ryanodine receptors? 45. What are the steps of muscular contraction - from the neuromuscular junction to the sarcomere?

Regarding the muscles, why electric impulses are important in the contraction mechanisms? Explain.

If an individual does training with only the right knee extensor muscles, it is common to see increase in strength in knee extension force for the right leg and an increase in strength in the knee extension force of the left leg (although the increase in force is typically not to the same extent as the force increase in the right leg) a.) True b.) False

A) Describe the difference between strength and power during a squat. Provide a quantitative example that illustrates the difference. B) During a squat, the weight you have on your shoulders has a certain amount of gravitational potential energy. As you squat down and come to a stop at the bottom of the squat, some of that energy is lost. Where does it go?

Isometric exercise is best described as applying a force O a) with movement through a full and complete range of motion O b) while a muscle is lengthening and returning to a resting position c) without any change in length of the muscle O d) at a constant speed

Explain how microscopic and macroscopic anchoring of musclefilaments enables you to bend your elbow

What effect does stretching the muscle have on contractile strength?  Is this effect linear?  What preload force resulted in the highest contractile force?

How do heart rate, preload, afterload, and contractility affect cardiac output and cardiac workload?