MDCAT Physics MCQ #631

MDCAT Physics MCQ #631

1. Question 1

   Q1. A person experiences muscle weakness during a prolonged activity. What is the role of the nervous system in this scenario?

   • A) The nervous system enhances neuronal excitability and muscle contraction force.
   • B) The nervous system modulates the release of neurotransmitters involved in muscle relaxation.
   • C) The nervous system disrupts the functioning of the neuromuscular junction.
   • D) The nervous system increases the strength of the muscle contraction signal.

   Answer: The nervous system modulates the release of neurotransmitters involved in muscle relaxation.

   Explanation: The nervous system modulates the release of neurotransmitters involved in muscle relaxation, contributing to muscle weakness.