Test 4 – Immune System (Chapters 20 & 21) Name ... - Next2Eden

39) Which of the following is not a barrier to bacterial invasion? 39) __________A. MucusB. Lysozyme in tearsC. SalivaD. Interferon40) Select the correct statement about lymph transport. 40) ________A. Lymph transport is only necessary when illness causes tissue swelling.B. Lymph transport depends on the movement of adjacent tissues, such as skeletalmuscles.C. Under normal conditions, lymph vessels are very high-pressure conduits.D. Lymph transport is faster than that occurring in veins.41) When activated T helper cells release cytokines that activate T cytotoxic andB cells. True or false? 41) ____________A. TrueB. False42) Select the correct statement about lymphocytes. 42) ________.A. Just like B cells, activated T cells become plasma cells too.B. Macrophages can be thought of professional antigen presenting cells.C. T cells are the only form of lymphocyte found in lymphoid tissueD. None of the above.43) Select the correct statement about lymphoid tissue. 43) ______A. Lymphoid tissue is predominantly reticular connective tissue.B. Lymphoid macrophages secrete antibodies into the blood.C. Once a lymphocyte enters the lymphoid tissue, it resides there permanently.D. T lymphocytes act by ingesting foreign substances.44) Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n)________. 44) ___________A. Peyer's patchB. thymusC. tonsilD. appendix45) Which of the following represents a logical sequence of structures that contribute to thereturn of fluid into the blood via the lymphatic system? 45) __________A. Blood capillaries, arteries, lymphatic vessels, subclavian veinB. Arteries, lymphatic vessels, blood capillaries, subclavian veinC. Arteries, blood capillaries, lymphatic vessels, subclavian veinD. Subclavian vein, arteries, blood capillaries, lymphatic vessels