Question

Question5

a) What is the primary way that muscle force is controlled?
b) Describe this phenomenon and explain how this relates to changes in muscle
circumference.

Question6:
Which of these two types of muscle contractions (Isotonic, Isometric) is used in the body to promote joint stability? Briefly explain your reasoning.

Answer 1

Q5 a) he nervous system controls muscle force by varying both motor unit recruitment and rate coding.

b) The central nervous system can increase the strength of muscle contraction by the following: Increasing the number of active motor units (ie, spatial recruitment) Increasing the firing rate (firing frequency) at which individual motor units fire to optimize the summated tension generated (ie, temporal recruitment)

Q6) isometric contractions are active in maintaining posture and maintaining bone and joint stability.