Asked in UHS MDCAT 2024 2024Moderate

The accumulation of 'lactic acid' in the muscles results in:

Correct answer: A. Extreme fatigue

  • A. Extreme fatigue
  • B. Muscle contraction
  • C. Paralysis
  • D. Convulsion

Explanation

Extreme fatigue, or severe tiredness, is an overwhelming sense of exhaustion that isn't relieved by rest. It can be caused by various factors, including physical exertion, stress, sleep disorders, medical conditions (like anemia or thyroid issues), or mental health disorders (like depression). It may impact daily activities and overall quality of life.

Last updated

About Muscle Contraction

Muscle contraction is explained by the sliding filament model, in which myosin heads pull actin filaments within sarcomeres using ATP. The topic covers calcium, troponin, tropomyosin, the neuromuscular junction and relaxation, with attention to how filament length stays almost constant while the sarcomere shortens.

Practise Support and Movement

738 free Support and Movement MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Biology questions like this

Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions