What are the Signs and Symptoms of a Cranial Nerve 3 Palsy? The oculomotor nerve also provides motor innervation to the muscle that raises the eyelid when opening the eye normally without eyebrow movement.Īn involuntary function of cranial nerve three is the constriction of the pupil when light enters the eyes.
As the name of the nerve suggests, the oculomotor nerve is responsible for many eye movements including moving the eye up, down, and in towards the nose. The third cranial nerve, the oculomotor nerve, has several major functions related to the eyes. Most of the cranial nerves take a path through the brain to the front of the head, including the eyes. The cranial nerves which directly impact the eyes are cranial nerves 2, 3, 4, 5, 6, and 7. The cranial nerves are named and numbered with each having a written name based on the function of the structures that the nerve innervates and being numbered based on how high in the brainstem the nerve originates. These twelve nerves arise from the brain stem and are responsible for many major functions throughout the body.
There are twelve cranial nerves which are major nerves in the head and neck. A cranial nerve three palsy occurs when the damage to the nerve is so severe that it no longer provides any innervation to the tissue. If something happens and damages this cranial nerve, there are several classic signs and symptoms that present. The third cranial nerve, which is also called the oculomotor nerve, has many roles in controlling the eyes.
0 kommentar(er)
