Corticobulbar Tract
The corticobulbar tract is a neural pathway that connects the cerebral cortex to the brainstem. It plays a crucial role in controlling voluntary movements of the face, head, and neck by sending signals to the cranial nerve nuclei located in the brainstem. This tract is essential for functions such as facial expression, chewing, and swallowing.
The corticobulbar tract primarily consists of upper motor neurons that originate in the motor cortex. These neurons project to various cranial nerves, including facial nerve (CN VII) and trigeminal nerve (CN V). Damage to this tract can lead to motor deficits, such as weakness or paralysis in the facial muscles.