The part of internal ear not responsible for dynamic balancing is

Options

A. cochlea
B. Semicircular canal
C. Utriculus
D. Sacculus

Answer

To solve the question regarding which part of the internal ear is not responsible for dynamic balancing, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Components of the Internal Ear**:
The internal ear consists of several structures, including the cochlea, semicircular canals, utriculus, and sacculus.

2. **Understand the Function of Each Component**:
- **Cochlea**: This structure is primarily responsible for hearing. It converts sound vibrations into neural signals that the brain interprets as sound.
- **Semicircular Canals**: These are involved in dynamic balance. They detect rotational movements of the head.
- **Utriculus and Sacculus**: These structures are part of the vestibular system and are responsible for static balance, helping the body understand its position relative to gravity.

3. **Determine Which Component is Not Involved in Dynamic Balancing**:
- Since the cochlea is responsible for hearing and not for balance, it does not play a role in dynamic balancing.
- The semicircular canals are specifically responsible for dynamic balance, while the utriculus and sacculus are associated with static balance.

4. **Conclude the Answer**:
Based on the functions of each part, the cochlea is the only structure listed that is not responsible for any form of balance, dynamic or static.

### Final Answer:
The part of the internal ear not responsible for dynamic balancing is **Cochlea**.

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