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Anatomy QIII:QVII

The Lymphatic and Immune Systems

QuestionAnswer
lymphatic vessels collect lymph from what kind of tissue loose connective tissue
lymph fluid flows only toward or away from the heart? toward
smallest of the lymph vessels which first receive lymph lymph capillaries
vessels that collect from lymph capillaries lymphatic collecting vessels
areas scattered around the collecting vessels lymph nodes
collect lymph from collecting vessels lymph trunks
empty into the veins of the neck lymph ducts
two functions of the lymphatic vessels 1) collect excess tissue fluid and blood proteins, 2) return tissue fluid and blood proteins to the bloodstream
these structures are located near blood capillaries with minivalve flaps that open and allow fluid to enter lymph capillaries
does the heart pump on the lymphatic system? no
specialized lymphatic capillaries or the small intestine that receive a fatty lymph called chyle lacteals
these vessels are composed of the same three tunica as blood vessels lymphatic collecting vessels
at the level of the lymph collecting vessels, the movement of lymph is propelled by (3) 1) bulging of skeletal muscles, 2) pulsing of nearby arteries, 3) tunica media of the lymph vessels
these structures cleanse the lymph of pathogens (cancer cells, harmful foreign substances, etc) before they reach venous circulation lymph nodes
approximately how many lymph nodes are in the human body? 500
these structures are where lymphatic vessels converge lymphatic trunks
name the five lymph trunks lumbar, intestinal, bronchomediastinal, subclavian, jugular
this lymph trunk receives lymph from the lower limbs and some of the pelvic area lumbar
the unpaired lumbar trunk intestinal
lymph trunk that receives chyle from digestive system intestinal
lymph trunk that collects lymph from thoracic viscera bronchomediastinal
lymph trunk that receives lymph from the upper limbs and thoracic wall subclavian
lymph trunk that drains lymph from the head and neck jugular
lymph duct located at the union of lumbar and intestinal trunks (two names) cisterna chyli, left lymphatic duct
the expanded most inferior portion of the thoracic duct left lymphatic duct
lymphatic duct that ascend along the vertebral bodies, junction of the left internal jugular and left subclavian veins thoracic duct
this lymph duct drains 3/4 of the body thoracic duct
the only portion of the body that the thoracic duct does not drain the right upper quadrant
lymph duct which empties into the right internal jugular and subclavian veins right lymphatic duct
not everyone has this duct right lymphatic duct
MALT stands for mucosa associated lymphoid tissue
two most important tissues of the immune system 1) mucous membranes, 2) lymphoid organs
function of these organs is to gather and destroy infectious microorganisms lymphoid organs
where immature T cells mature, secretes hormones thymus gland
where is the thymus gland located near the trachea
considered lymph organs, place where antigens are destroyed and activate B and T cells lymph nodes
located in the ileum of the small intestine, most distal point of the small intestine, densely packed mucosa associate lymphoid tissue, so considered a lymph organ aggregated lymphoid nodules
another name for aggregated lymphoid nodules Peyer's patches
the largest lymphoid organ spleen
two postnatal functions of the spleen 1) removal of blood-borne antigens, 2) removal and destruction of old/defective blood cells
prenatal function of the spleen site of blood cell formation in the fetus
the tubular offshoot of the cecum (proximal portion of the large intestine) appendix
simplest lymphoid organ tonsils
which tonsils are the largest and most often infected in childhood palatine tonsils
four classes of tonsils palatine, lingual, pharyngeal, tubal
this lymph organ is not comprised of true lymphoid tissue thymus gland
Created by: amyziolkowski