Physiology How would a drug that competes with Ach for receptors at the motor end plate effect skeletal muscle? It would A Produce uncontrolled muscle spasma B Cause the muscles to contract and be unable to relax C Cause muscles to relax and be unable to contract D Make the muscles more excitable 💡 Explanation How would a drug that competes with Ach for receptors at the motor end plate effect skeletal muscle? It would ✓ Correct Answer: C. Cause muscles to relax and be unable to contract