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25 Cards in this Set

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What are lymphatic nodules composed of?
lymphatic cells and and an extracelluar connective tissue matrix (non-enclosed aggregation of lymph tissue to help immune response)
Are lymphatic nodules or organs enclosed?
Lymphatic organs
What do lymphatic nodules do?
filter and attack antiens
What are some examples of when the lymphatic nodules group together to form larger structures?
mucosa-associated lymphatic tissue (MALT) or to formtonsils
What is MALT?
mucosa-associated lymphatic tissue, a group of lymphatic nodules which attack antigens
Where are large collections of lymphatic nodules located in teh mucosal lining?
gi tract, respiratory, genital, and urinary tracts
How do the lymphatic cells in the MALT detect antigens and initiate an immune response?
As air, food, and urine enter thier respective tracts, the cells detect antigens and initiate an immune response
What is very prominent in the mucosa of the small intestine, primarily in the ileum?
MALT
What are peyer patches?
collections of lymphatic nodules located primarily in the ileum of the small intestine
What is the name for the collections of lymphatic nodules that can become quite large and bulge into the gut lumen in the small intestine? What area of the small intestine are they tyically located?
Peyer patches, primarily in the ileum
What are two structures that are not surrounded by a connective tissue capsule and that group together to form larger structures?
MALT or tonsils
What are tonsils?
large clusters of lymphatic cells and extracellular matrix that are not completely surrounded by a connective tissue capsule.
What are large clusters of lymphatic cells and extracellular matrix that are not completely surrounded by a connectiv tissue capsule?
Tonsils
What feature of the tonsil helps trap material and facilitate its identification by lymphocytes?
invaginated outer edges
what does having invaginated outer edges do for the tonsil?
trap material and facilitate its identification by lymphocytes.
What are the 3 groupsof tonsils found in the pharynx?
pharyngeal tonsils, palatine tonsils, and lingual tonsils
Where are the 3 groups of tonsils found and what are they?
found in the pharynx, pharyngeal tonsils, palatine tonsils, and lingual tonsils
Which type of tonsil is known also as a adenoid?
pharyngeal tonsil
what is another name for a pharyngeal tonsil, where are they found, and what happens if they enlarge?
adenoids, found in the posterior wall of the nasopharynx, they can reduce air flow through the nasopharynx when sleeping.
Which type of tonsils are found in the posterolateral of the oral cavity?
palatine tonsils
where are lingual tonsils found?
posterior 1/3 of the tongue
Which tonsil is found along the posterior 1/3 of the tongue?
lingual tonsil
Which type of tonsil is most commonly affected by acute tonsillitis?
the palatine tonsils
what is bacterial tonsillitis?
strep throat
What is chronic tonsillitis? What is the surgery to treat it?
persistent or recurrent infections can lead to permanent enlargement of the tonsils. Tonsillectomy, required if person has 6-7 tonsillar infections in 1 year