Flashcards in Chapter 1 (page 8) Deck (13):
Is the largest lymph organ. It is blood rich and about the size of a fist. It is located in the left side of the abdominal cavity just beneath the diaphragm.
The functions of spleen are:
*site for lymphocyte proliferation.
*immune surveillance and response.
*Blood-cleansing functions (extracts aged and defective blood cells and platelets from blood.
*It can also remove debris, foreign matter, bacteria, viruses, toxins, etc. from the blood).
Give (3) three more functions of the spleen.
stores breakdown products of RBC for later use (i.e.- iron)
site of RBC production in fetus
stores blood platelets
Important functions primarily during early years. Largest at puberty (still weighs less than one ounce). Replaced largely by fat in adulthood.
Two functions of Thymus are ______________________ and important in the maturation of specialized lymphocytes (T-cells).
source of lymphocytes before birth
The Thymus differs from other lymph organs in two ways:
i) Functions strictly in T-cell maturation therefore it is the only lymph organ that does not directly fight antigens.
ii) Framework of Thymus consists of epithelial cells rather than reticular fibers.
__________ are the simplest type of lymph organ. Form ring of lymphatic tissue around entrance of pharynx.
Palatine tonsils - located on either side of posterior end of oral cavity. They are the smallest tonsils and most often infected. True or False?
Where is Pharyngeal tonsils located?
posterior wall of nasopharynx
What tonsils are located at the base of tongue.
This tonsils surrounds the opening of the auditory tubes into the pharynx.
Tiny Tubal tonsils
They gather and remove any pathogen entering the pharynx in inhaled air or food.
Tiny Tubal tonsils
PARTS of INTESTINES:
Lymph capillaries called ________ are present in finger - like _______ of the intestinal mucus. They drain lymph from the digestive viscera. It is milky white rather than clear because the lacteals also receive digestive fats from the intestine. Other lymph organs in the intestines are called _______________.
Peyer’s patches (like tonsils).