Identify the correct statement

Options

A. Organ of Corti is concerned with equilibrium
B. The `VIII^(th)` cranial nerve carries sound signals from organ of Corti to cerebrum
C. Mechanoreceptores are present in semicircular canal and sacculus
D. Tectorial membrane is found in the eye of cat , tigers and panther

Answer

To identify the correct statement from the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Evaluate the First Statement:**
- The first statement claims that the "organ of Corti is concerned with equilibrium."
- **Analysis:** The organ of Corti is actually a specialized sensory structure located in the cochlea of the inner ear. Its primary function is to transduce sound waves into neural signals, not to maintain equilibrium.
- **Conclusion:** This statement is **incorrect**.

2. **Evaluate the Second Statement:**
- The second statement states that "the 8th cranial nerve carries sound signals from the organ of Corti to the cerebrum."
- **Analysis:** The 8th cranial nerve, also known as the vestibulocochlear nerve, indeed carries auditory signals from the organ of Corti to the brain (specifically to the auditory cortex in the cerebrum).
- **Conclusion:** This statement is **correct**.

3. **Evaluate the Third Statement:**
- The third statement mentions that "mechanoreceptors are present in the semicircular canal and saccule."
- **Analysis:** While mechanoreceptors are involved in the detection of mechanical changes, the semicircular canals and saccule are primarily associated with balance and equilibrium, not specifically with mechanoreceptors.
- **Conclusion:** This statement is **incorrect**.

4. **Evaluate the Fourth Statement:**
- The fourth statement claims that "the tectorial membrane is found in the eye of cats, tigers, and panthers."
- **Analysis:** The tectorial membrane is a structure in the cochlea of the inner ear, not in the eye. It plays a role in hearing, not vision.
- **Conclusion:** This statement is **incorrect**.

### Final Conclusion:
After analyzing all the statements, the only correct statement is the second one: "the 8th cranial nerve carries sound signals from the organ of Corti to the cerebrum."