Which is the smallest muscle in the human body?

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RRB JE CBT I - (Held On: 2 June 2019 Shift 1)
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  1. Pectoralis
  2. Heart
  3. Stapedius
  4. Tibialis

Answer (Detailed Solution Below)

Option 3 : Stapedius
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Detailed Solution

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The correct answer is Stapedius

Key Points

  • The Stapedius muscle is the smallest skeletal muscle in the human body.
  • It is located in the middle ear and helps stabilize the stapes bone, which is involved in the conduction of sound vibrations to the inner ear.
  • The muscle is essential for protecting the inner ear from loud sounds by dampening the vibrations of the stapes.

Additional Information

  • The stapes bone, also known as the stirrup bone, is the smallest bone in the human body and works closely with the stapedius muscle.
  • Issues with the stapedius muscle can lead to conditions such as hyperacusis, where normal sounds are perceived as excessively loud.
  • The stapedius muscle's reflex, also known as the acoustic reflex, is an involuntary muscle contraction in response to high-intensity sound stimuli.

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