Cranial nerve XI (the accessory nerve) has traditionally been considered to comprise two parts, a cranial part that arises from neuron cell bodies in the caudal part ofnucleus ambiguus(which lies in the lateral region of the medulla) and a spinal part that arises from neuron cell bodies locate...
D. 1.) motor to 4 of 6 extraocular muscles and elevator palpebrae superiors (opens eyelid) 2.) parasympathetic innervation to smooth muscle of the eye (sphincter pupilae and ciliary muscles) via the ciliary ganglionE. ptosis, pupil dilation, accommodation loss , diplopia (double vision) CN ...
nerve, a branch from the trigeminal ganglion, which enters the periorbita through the orbital fissure and carries these postganglionic sympathetic axons to the smooth muscle (orbitalis muscle) of the periorbita, and eyelids including the third eyelid and to the dilator pupillae muscle of the ...
The trigeminal nerve actually branches out into three different nerves, thus the nametri-geminal. The three nerves are the ophthalmic nerve, the maxillary nerve, and the mandibular nerve. These nerves are sensory, as well as motor. The ophthalmic and maxillary nerves are sensory nerves, while th...