Trigeminal nerves, sensory

However, both sensory and pulmonary irritation can be expected with sufficient exposure. Sensory irritation is characterized by immediate eye and nose irritation that may increase to sensations of burning and pain and is due to interaction between the substance and receptors in the trigeminal nerve. Vapors reaching the lower respiratory tract as well as the lungs may interact with the nerves in these regions, causing dyspnea and breathlessness or pulmonary irritation. 

It is structurally and chemically related to tricyclic antidepressant drug imipramine and pharmacologically it is similar to diphenyl hydantoin sodium. It is effective in grandmal and psychomotor epilepsy and also in the treatment of trigeminal neuralgia (a condition characterized by paroxysms of intense pain of stabbing nature within the area of distribution of trigeminal nerve without sensory loss). 

Sensory Rat trigeminal nerve endings 5-HTi-like) Buzzi et al. 1991... 

Amann B, Hummel B, Rall-Autenrieth H, Walden J, Grunze H. Bupropion-induced isolated impairment of sensory trigeminal nerve function. Int Clin Psychopharmacol 2000 15(2) 115-6. 

Actually, unipolar neurons have two axons rather than an axon and dendrite (Figure 14.3). Mostintemeurons, which form all the neural wiring within the CNS, are of this type. Examples include spinal ganglia, most cranial nerve sensory ganglia, and the trigeminal mesencephalic nucleus. Dorsal root ganglia cells extend one axon centrally toward the spinal cord, and the other axon toward the skin or muscle. 

V. Trigeminal nerve. Motor Tests power of jaw opening and sideways deviation against the resistance of a hand placed against the jaw. Sensory Test corneal reflex by touching cornea (also nasal mucosa) with a wisp of cotton. 

In the NT-3 knockout mice, most sensory neuron populations were reduced in number. These alterations affected several sensory modalities, including somatosensory information processed by the DRGs and by the trigeminal ganglion, interoceptive visceral information conveyed by petrose-nodose ganglion cells and propioceptive information processed by DRG neurons and by the mesencephalic nucleus of the trigeminal nerve. During normal development, innervation of skeletal muscle by la and Ib DRG neurons induces formation... 

Miller MW (1995a) Effect of pre- or postnatal exposure to ethanol on the total number of neurons in the principal sensory nucleus of the trigeminal nerve cell proliferation versus neuronal death. Alcohol Clin Exp Res 19 1359-1364. 

Bhnk reflex latency sensory upper division trigeminal nerves (V), pons, facial nerves (VII)... 

The nerve supply to the dura is derived from all three branches of the trigeminal nerve, from sympathetic nerves from the carotid plexus and the superior cervical ganglion, and from cervical sensory nerves from Cl and C2. 

The trigeminal nerve (V) is the only cranial nerve carrying general sensory fibers. It innervates the head, neck, meninges, and sinuses. The glossopharyngeal nerve (IX) and the vagus (X) carry visceral afferents, sensory input from the viscera such as nausea, but not pain. 

Dorsal, presnmably touch-sensory branches of the trigeminal nerves e.g. n4+5 and n.ex in Chauvelia (Figure 4.6). 

A 53-year-old man with a diagnosis of a supratentorial brain tumour underwent an awake craniotomy under local anesthetic infiltration (total of 40 mL 0.75% ropivacaine infiltrated along tire sensory branches of the trigeminal nerve, Mayfield pin sites and surgical wound line). He developed a haemodynamically significant... 

Analogous events occur in the nose when many odorants interact with the epithelia therein. The odor component is conveyed via the odorant s interaction with molecular receptors on olfactory sensory neurons (first cranial nerve) in the olfactory epithelium [9] irritation is initiated by interactions with receptors or other mechanisms that stimulate the trigeminal (fifth cranial) nerve [10]. The term chemesthesis has been applied to distinguish this sensory experience from olfaction or, in the oral cavity, taste [11,12]. Importantly, chemesthesis is a bodywide experience. It is only on some portions of the head, e.g., eyes, nose, mouth, and some other facial areas, where information is conveyed by the trigeminal nerve (Fig. 1). 

In the nose, however, the trigeminal nerve provides information to the brain about chemical irritation (as well as many other sensory attributes, e.g., temperature, humidity, and physical changes). Initially, odorants that stimulate chemesthesis must deposit themselves in the mucus. Although Fig. 3 indicates such deposition in the region of the olfactory epithelium, this can take place anywhere within the nasal cavity. 

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