A patient has a disorder in which antibodies block acetylcholine receptors at the neuromuscular junction. Which problem is most likely to occur?
Correct answer: A. Weak voluntary muscle contraction
- A. Weak voluntary muscle contraction
- B. Continuous bone growth
- C. Increased red blood cell production
- D. Excessive synovial fluid formation
Explanation
Acetylcholine must bind to receptors on the muscle fibre to initiate a skeletal muscle action potential. Blocking these receptors reduces neuromuscular transmission and causes fatigable weakness, as seen in myasthenia gravis.
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About Skeletal and Muscular Systems
The skeletal and muscular systems include bone structure, joints, cartilage, the axial and appendicular skeleton, and the roles of ligaments and tendons. They also cover skeletal muscle organization, the sliding filament mechanism, neuromuscular contraction, and common differences between voluntary skeletal muscle, cardiac muscle and smooth muscle.
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