The principal sensory nucleus, which is located in the lateral pons, receives tactile and proprioceptive sensation. It gives off fibers that travel in the trigeminal lemniscus and the uncrossed dorsal…
The pharyngeal reflex or gag reflex is elicited by stimulating the posterior pharyngeal wall and results in bilateral contraction of the pharyngeal muscles and brief elevation of the soft palate….
Centrifugal auditory pathways also include efferent projections to the sensory hair cells of the cochlea and to the muscles of the middle ear. The cochlear efferent fibers originate from a…
Muscle Stretch Reflex. Parts A and B show some of the connections made by groups Ia and II (not shown) afferent fibers from muscle spindle receptors. These afferent fibers are…
Trigeminal ganglionopathy in association with connective tissue disease is likely caused by circulating autoantibodies to ganglion cell bodies. This is particularly seen in scleroderma or Sjögren syndrome. Numbness begins around…
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The fibers of the ventral cochlear nucleus then project to the superior olive located in the medulla. The fibers then project by way of the lateral lemniscus nuclei and other…
Related posts: Arteries of Spinal Cord Spinal Reflex Pathways Cervical Spondylosis Distribution of Motor and Sensory Fibers Cell Types of Nervous System Autonomic Nerves in Neck
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Motor Neurons. Except for muscles innervated by the cranial nerves, each somatic muscle receives its motor supply from a column of motor neurons arranged longitudinally in the anterior horn of…
