4 functions of the spleen
destroy old RBCs
produce antibodies
store RBCs
filter microorganism from blood
respond to local inflammation, 1st line of defense in GI tract
tonsils
lymphoid tissue in GI tract
peyer’s patches
lymph nodes in front of the ear
pre-auricular
what are the 2 main trunks that vessels drain into
R lymphatic
thoracic