2019-01-25T09:44:10+00:00 Assignments

John has difficulty swallowing, loss of taste sensation in the posterior one-third of the right half of his tongue, and decreased salivation, especially on the right side. Describe the sensory portion of the affected neuropathway in John. You should begi

This paper concentrates on the primary theme of John has difficulty swallowing, loss of taste sensation in the posterior one-third of the right half of his tongue, and decreased salivation, especially on the right side. Describe the sensory portion of the affected neuropathway in John. You should begi in which you have to explain and evaluate its intricate aspects in detail. In addition to this, this paper has been reviewed and purchased by most of the students hence; it has been rated 4.8 points on the scale of 5 points. Besides, the price of this paper starts from £ 40. For more details and full access to the paper, please refer to the site.

Biology Question: John has difficulty swallowing, loss of taste sensation in the posterior one-third of the right half of his tongue, and decreased salivation, especially on the right side. Describe the sensory portion of the affected neuropathway in John. You should begin with the affected nerve and end with the area of the brain

 Biology Question: John has difficulty swallowing, loss of taste sensation in the posterior one-third of the right half of his tongue, and decreased salivation, especially on the right side. Describe the sensory portion of the affected neuropathway in John. You should begin with the affected nerve and end with the area of the brain

Sample Soln

nerve (IX) carries taste sensations from the posterior one-third of the tongue, the vallate papillae, and the superior pharynx.” If he has lost the taste sensation in that part of his tounge, it is most likely caused by an injury to or inflammation of the glossopharyngeal nerve .The vagus nerve (X) carries a few fibers for taste sensation from the epiglottis. The facial nerve has many roles, and if john is having problems salivation his facial nerve could possibly be damaged or inflamed. The difficulty swallowing could be a result from his tongue being paralyzed if any of these nerves are working improperly causing his tongue to lean towards the injured side of his mouth.

  • the posterior one third of the right half of a tongue is a region in the tongue for tasting the bitter and sour foods
  • it is caused by inflammation or injury to the glossopharyngeal nerve (pertaining to the tongue and the throat)
  • it involves the vagus nerve which is a mixed nerve that supplies the pharynx and larynx and lungs and heart and esophagus and stomach and most of the abdominal viscera.
  • the vagus nerve carries the fibres for taste orientation from the epiglottis
  • decreased salivation is caused by injury of the facial nerve that controls saliva secretion
  • the nerve extend from the taste regions to the medulla oblongata in the brain
  • fibres from medulla oblongata intersect so as to form a cross and extend to thalamus
  • neorons from the thalamus extend to the taste area of the cortex and this makes the tongue move to the affected area and get paralyzed thus becoming a problem both in swallowing and saliva secretion

injury or inflammation to the glossopharyngeal nerve that impairs swallowing and taste particularly for sour and bitter tasting substances and it involves the Vagus nerve, which carries some fibers for taste sensation from the epiglottis. The decreased in salivation is as a result of injury or inflammation of facial nerve that controls saliva secretion. These nerves extend from the taste buds to the tractus solitarius of the medulla oblongata; fibers from this nucleus decussate and extend to the thalamus. Neurons from the thalamus project towards taste area of the cortex located in the insula, deep to the inferior end of the postcentral gyrus of the parietal lobe. Damage of hypoglossal nerve causes difficulties in speech and swallowing.


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