Which of the following statement is false ?

Options

A. Nissl granules present in gray matter
B. Cyton of motor cranial nerves present in Brain
C. Repair of Nerve is possible
D. Tract connect the CNS to PNS

Answer

To determine which of the following statements is false, we will analyze each statement provided in the question.

1. **Nissl granule is present in the grey matter.**
- Nissl granules are structures found in the cell body (cyton) of neurons, primarily composed of rough endoplasmic reticulum and ribosomes. Grey matter in the nervous system consists mainly of neuronal cell bodies, where Nissl granules are indeed present. Therefore, this statement is **true**.

2. **The cyton of the motor cranial nerve is present in the brain.**
- Motor cranial nerves originate from the brain and carry motor impulses to various effectors in the body. The cell bodies (cytons) of these motor neurons are located in the brain. Thus, this statement is also **true**.

3. **Repair of the nerve is possible.**
- While some advancements in medicine suggest limited repair capabilities for nerves, traditionally, the repair of neurons is not considered fully possible. Once damaged, neurons do not regenerate effectively. Therefore, this statement is **false**.

4. **The tract connects the central nervous system to the peripheral nervous system.**
- A tract is a bundle of nerve fibers (axons) in the central nervous system that connects different parts of the CNS or connects the CNS to the peripheral nervous system. This statement is **true**.

Based on the analysis, the false statement is:
**"Repair of the nerve is possible."**