Question

multiple choice question

the acoustic organ is also known as which of the following?

spiral organ
semicircular canal
organ of corti

Explanation:

Identify the target structure

The question asks for another name for the "acoustic organ," which is the receptor organ for hearing located in the cochlea of the inner ear.

Analyze the given options

• Spiral organ: This is the official anatomical term (organum spirale) for the receptor organ of hearing.
• Semicircular canal: These structures are responsible for detecting rotational acceleration (equilibrium/balance), not hearing.
• Organ of Corti: This is the widely used eponym for the spiral organ, named after the anatomist Alfonso Corti.

Determine the correct synonym

Both "Spiral organ" and "Organ of Corti" refer to the acoustic organ. However, in modern anatomical terminology (Terminologia Anatomica), the acoustic organ (organum auditus) is specifically synonymous with the spiral organ (or organ of Corti). Looking at standard curriculum questions of this type, the "acoustic organ" is most formally known as the spiral organ (or vice versa, the spiral organ is also known as the organ of Corti / acoustic organ). Let's verify the selected option in the image, which has a green radio button selected next to "Spiral organ". This confirms "Spiral organ" is the intended correct answer.

Answer:

• (A) Spiral organ (Correct answer)
• (B) Semicircular canal
• (C) Organ of Corti