Question

multiple choice question
a build up of lactic acid and lowered levels of atp and acetylcholine can cause muscle:
○ cramps
○ spasms
○ fatigue
○ paralysis

Explanation:

Lactic - acid build - up occurs during anaerobic respiration in muscles. Lowered ATP levels mean less energy for muscle contraction, and decreased acetylcholine affects nerve - muscle communication. This combination leads to muscle fatigue, a state where the muscle's ability to contract is reduced. Cramps are sudden, involuntary contractions often due to electrolyte imbalances; spasms are involuntary muscle twitches; paralysis is the loss of muscle function due to nerve damage.

Answer:

C. fatigue