Changes

==Introduction==

==Introduction==

<p>''Sometimes the term tonsil is used to refer to all mucosal associated lymphoid tissue (MALT). In this article it will specifically deal with tonsils located in the [[Nasopharynx - Anatomy & Physiology|nasopharynx]] & [[Oropharynx - Anatomy & Physiology|oropharynx]].''</p>

<p>''Sometimes the term tonsil is used to refer to all [[:Category:Mucosal Associated Lymphoid Tissue|mucosal associated lymphoid tissue (MALT)]]. In this article it will specifically deal with tonsils located in the nasopharynx & [[Oropharynx - Anatomy & Physiology|oropharynx]].''</p>

<p>The tonsils are part of the MALT and more specifically the GALT. They are located in the [[Nasopharynx - Anatomy & Physiology|nasopharynx]] and [[Oropharynx - Anatomy & Physiology|oropharynx]] and form a ring of lymphoid tissue around the [[Pharynx - Anatomy & Physiology|pharynx]] to protect the openings into the [[Alimentary System Overview - Anatomy & Physiology|alimentary]] and [[Cardiorespiratory System Overview - Anatomy & Physiology#Upper Respiratory Tract|respiratory]] systems.</p>

<p>The tonsils are part of the MALT and more specifically the GALT. They are located in the nasopharynx and [[Oropharynx - Anatomy & Physiology|oropharynx]] and form a ring of lymphoid tissue around the [[Pharynx - Anatomy & Physiology|pharynx]] to protect the openings into the [[Alimentary System Overview - Anatomy & Physiology|alimentary]] and [[Cardiorespiratory System Overview - Anatomy & Physiology#Upper Respiratory Tract|respiratory]] systems.</p>

==Structure==

==Structure==

===Pharyngeal===

===Pharyngeal===

<p>''Also called adenoids''</p>

<p>''Also called adenoids''</p>

<p>Present in all the species they are located on the pharyngeal septum in the [[Nasopharynx - Anatomy & Physiology|nasopharynx]]. In cattle it is located on the caudal end of the septum.</p>

<p>Present in all the species they are located on the pharyngeal septum in the nasopharynx. In cattle it is located on the caudal end of the septum.</p>

===Palatine===

===Palatine===

===Tubal===

===Tubal===

Absent in the cat and dog. They are located in the lateral wall of the [[Nasopharynx - Anatomy & Physiology|nasopharynx]] and provide protection to the entrance of the auditory tubes. Compact in cattle and pigs and diffuse in horses.

Absent in the cat and dog. They are located in the lateral wall of the nasopharynx and provide protection to the entrance of the auditory tubes. Compact in cattle and pigs and diffuse in horses.

===Lingual===

===Lingual===

Found in varying degrees in all species on floor of [[Oropharynx - Anatomy & Physiology|oropharynx]].

Found in varying degrees in all species on floor of [[Oropharynx - Anatomy & Physiology|oropharynx]].

===Paraepiglottic===

===Paraepiglottic===

Present in the pig and are found rostrolateral to [[Epiglottis|epiglottis]] base.

Present in the pig and are found rostrolateral to [[Larynx - Anatomy & Physiology#Epiglottis|epiglottis]] base.

===Histology===

===Histology===

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<gallery perrow="3">

*[[Actinobacillus pleuropneumoniae|Actinobacillus pleuropneumoniae]] in pigs may remain undetected by serological tests and swabbing in on the palatine tonsil

*[[Actinobacillus pleuropneumoniae|Actinobacillus pleuropneumoniae]] in pigs may remain undetected by serological tests and swabbing in on the palatine tonsil

[[Category:Mucosal Associated Lymphoid Tissue]]

[[Category:Mucosal Associated Lymphoid Tissue]]