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Sensory neuronopathy (also known as sensory ganglionopathy) is a type of peripheral neuropathy in which sensory nerve cell bodies in the dorsal root ganglia, commonly including the trigeminal ganglion of the trigeminal nerve, are damaged due to a variety of mechanisms leading to sensory symptoms such as parasthesias, dysesthesias, or ...
The trigeminal lemniscus contains two main divisions: The ventral trigeminal tract - consists of second-order axons from the spinal trigeminal nucleus. These fibers cross the midline and ascend to the contralateral thalamus. The dorsal trigeminal tract - consists of second-order axons from the principal sensory nucleus of trigeminal nerve ...
Medially to the trigeminal ganglion are the internal carotid artery, and the posterior part of the cavernous sinus. [2] The motor root of the trigeminal nerve passes beneath the trigeminal ganglion to exit the skull through the foramen ovale. [2] The greater petrosal nerve passes underneath the trigeminal ganglion to reach the foramen lacerum.
The oculomotor nerve (III), trochlear nerve (IV), abducens nerve (VI) and the ophthalmic branch of the trigeminal nerve (V1) travel through the cavernous sinus into the superior orbital fissure, passing out of the skull into the orbit. The maxillary division of the trigeminal nerve (V2) passes through foramen rotundum in the sphenoid bone.
The large sensory root of mandibular nerve emerges from the lateral part of the trigeminal ganglion and exits the cranial cavity through the foramen ovale. The motor root (Latin: radix motoria s. portio minor), the small motor root of the trigeminal nerve, passes under the trigeminal ganglion and through the foramen ovale to unite with the ...
For example, in the column, lower limb is medial, upper limb is more lateral. At the medial lemniscus, axons from the leg are more ventral, and axons from the arm are more dorsal. Fibres from the trigeminal nerve (supplying the head) come in dorsal to the arm fibres, and travel up the lemniscus too. The medial lemniscus rotates 90 degrees at ...
In neuroanatomy, the maxillary nerve (V 2) is one of the three branches or divisions of the trigeminal nerve, the fifth (CN V) cranial nerve.It comprises the principal functions of sensation from the maxilla, nasal cavity, sinuses, the palate and subsequently that of the mid-face, [1] and is intermediate, both in position and size, between the ophthalmic nerve and the mandibular nerve.
The ophthalmic nerve (CN V 1) is a sensory nerve of the head. It is one of three divisions of the trigeminal nerve (CN V) , a cranial nerve . It has three major branches which provide sensory innervation to the eye , and the skin of the upper face and anterior scalp , as well as other structures of the head.