Question

1) Outline the any two neural adaptations a muscle undergoes to gain strength in the absence of muscle hypertrophy. (5 points)

2) Describe the role satellite cells play in hypertrophy of skeletal muscles in response to muscle injury. (5 points)

Answer 1

1.Two neural adaptation of muscles under absence of Muscle hypertrophy are synchronization and recruitment of additional motor neurons .A muscle gain strength through synchronization and recruitment of additional motor neurons. Motor units generally are recruited asynchronously, but resistance training allow motor units to act as a unit and increase the force generated by synchronization. Strength of the muscle is increase by this which allows muscles to reach tetanus to produce absolute peak force.

2.Satellite cells act as a activation system for the hypertrophy of muscle. These cells as involved in muscle  muscle repair and regeneration and also causes the hypertrophy of muscle.In undamaged muscle these remain in quiescent stage under the basal lamella on the surface of myofibre ,but as soon as they experience any mechanical stress they get activated starts the proliferation of myoblasts cells before the differentiation and can cause the hypertrophy of muscle fibres.