What nerve causes eyelid elevation?
The oculomotor nerve is the third cranial nerve (CN III). It enters the orbit via the superior orbital fissure and innervates extrinsic eye muscles that enable most movements of the eye and that raise the eyelid.
The facial nerve is the 7th cranial nerve and carries nerve fibers that control facial movement and expression. The facial nerve also carries nerves that are involved in taste to the anterior 2/3 of the tongue and producing tears (lacrimal gland).
Cranial nerve VI abducts the eye through stimulation of the lateral rectus muscle.
Oculomotor Nerve Innervates the levator palpebrae superioris, superior rectus, medial rectus, inferior rectus, and inferior oblique, which collectively perform most eye movements. Also innervates the sphincter pupillae and the muscles of the ciliary body.
Cranial nerve 3, also called the oculomotor nerve, has the biggest job of the nerves that control eye movement. It controls 4 of the 6 eye muscles in each eye: Medial rectus muscle (moves the eye inward toward the nose) Inferior rectus muscle (moves the eye down)
oculomotor nerve
The oculomotor nerve (the third cranial nerve; CN III) has three main motor functions: Innervation to the pupil and lens (autonomic, parasympathetic) Innervation to the upper eyelid (somatic)
Eyelid muscle innervation is achieved by cranial nerve VII (the facial nerve), cranial nerve III (the oculomotor nerve), and sympathetic nerve fibers. The facial nerve (CNVII) innervates the orbicularis oculi, frontalis, procerus, and corrugator supercilii muscles, and supports eyelid protraction.
The levator palpebrae superioris muscle elevates and retracts the upper eyelid. The superior rectus muscle is a muscle in the orbit. It is one of the extraocular muscles. It is innervated by the superior division of the oculomotor nerve (Cranial Nerve III).
oculomotor
The oculomotor or third cranial nerve innervates the levator palpebrae superioris to elevate the upper eyelid. The levator palpebrae superioris becomes a tendinous aponeurosis, which fuses with the anterior superior portion of the superior tarsal plate and possibly the pretarsal skin (figure 1).
The ability to move the eye in all other directions is controlled by the 3rd cranial nerve. It activated the medial rectus, superior rectus, inferior rectus and inferior oblique muscles to cause orbital rotation. See Diagram. Cranial Nerve III also controls the ability to open the eyelid.
The oculomotor nerve enables most of your eye movements, some aspects of vision, and raising the eyelid. It’s the third cranial nerve and works with cranial nerves four (trochlear) and five (trigeminal) to coordinate eye movement.
Motor neurons of the oculomotor nerve (CN3) innervate the levator palpebrae superioris muscle, the main muscle of upper eyelid elevation.
