Question:
With reference to role of internal ear in equilibrium receptors for dynamic balance of body lie in i while the receptors for static or linear balance of body lie in ii
With reference to role of internal ear in equilibrium receptors for dynamic balance of body lie in i while the receptors for static or linear balance of body lie in ii
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Balance trick: Semicircular canals = rotation (dynamic), utricle & saccule = position (static).
Updated On: May 4, 2026
- i: organ of corti, ii: tectorial membrane
- i: cristae of ampulla, ii: maculae of utriculus and sacculus.
- i: scala vestibule, ii: scala tympani
- i: Reissner's membrane, ii: tectorial membrane
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The Correct Option is B
Solution and Explanation
Concept:
The internal ear contains receptors for hearing and balance. Balance is of two types: dynamic and static.
Step 1: Understand dynamic balance. Dynamic equilibrium (angular movement) is detected by cristae in the ampulla of semicircular canals.
Step 2: Understand static balance. Static (linear) equilibrium is detected by maculae present in:
• Utriculus
• Sacculus
Step 3: Analyze options.
• (A) Organ of Corti → Hearing, not balance $\times$
• (B) Cristae (dynamic) and Maculae (static) → Correct \checkmark
• (C) Scala → Hearing structures $\times$
• (D) Membranes → Not balance receptors $\times$
Step 4: Conclusion. \[ \text{Dynamic = Cristae, Static = Maculae} \]
The internal ear contains receptors for hearing and balance. Balance is of two types: dynamic and static.
Step 1: Understand dynamic balance. Dynamic equilibrium (angular movement) is detected by cristae in the ampulla of semicircular canals.
Step 2: Understand static balance. Static (linear) equilibrium is detected by maculae present in:
• Utriculus
• Sacculus
Step 3: Analyze options.
• (A) Organ of Corti → Hearing, not balance $\times$
• (B) Cristae (dynamic) and Maculae (static) → Correct \checkmark
• (C) Scala → Hearing structures $\times$
• (D) Membranes → Not balance receptors $\times$
Step 4: Conclusion. \[ \text{Dynamic = Cristae, Static = Maculae} \]
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