Identify the incorrect statements

Options

A. Coiled portion of labyrinth is cochlea
B. Bony labyringth consists of upper scala tympani and lower scala vestibule
C. Scala media is fulled with endolymph
D. Scala vestibuli ends to oval window and scala tympanic terminates to round window .

Answer

To identify the incorrect statement regarding the inner ear and its structure, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Inner Ear**:
- The inner ear consists of two main parts: the membranous labyrinth and the bony labyrinth. The bony labyrinth contains the cochlea, vestibule, and semicircular canals.

2. **Identify the Components of the Cochlea**:
- The cochlea is a coiled structure within the inner ear. It contains three fluid-filled chambers:
- Scala vestibuli (upper chamber)
- Scala media (middle chamber, filled with endolymph)
- Scala tympani (lower chamber)

3. **Analyze the Given Statements**:
- The first statement is correct as it describes the structure of the inner ear accurately.
- The second statement claims that the upper part is Scala tympani, which is incorrect because Scala tympani is actually the lower part. Therefore, this statement is incorrect.
- The third statement correctly states that Scala media is filled with endolymph and that Scala vestibuli ends at the oval window while Scala tympani terminates at the round window, which opens to the middle ear.

4. **Conclusion**:
- The incorrect statement among the options provided is the second statement, which misidentifies the position of Scala tympani and Scala vestibuli.

### Final Answer:
The incorrect statement is the second one, which states that the upper part is Scala tympani.

---