Question 1 (0.63 points) In comparison to blood capillaries, lymphatic capillaries __________. Question 1 options: a) are not anchored to the surrounding tissues; thus, they have great flexibility b) absorb more proteins and carbohydrates from the GI tract c) have smaller diameters d) have overlapping endothelial cells that allow the passage of large materials Question 2 (0.63 points) Lymph leaving the lower limbs and returning to the trunk first passes through the __________. Question 2 options: a) inguinal lymph nodes b) pelvic lymph nodes c) lumbar lymph nodes d) cisterna chyli Question 3 (0.63 points) Before lymph leaves a lymph node, it would encounter all of the following EXCEPT __________. Question 3 options: a) T cells b) NK cells c) macrophages d) B cells Question 4 (0.63 points) Which of the following would occur if a disease selectively destroyed the reticular cells of the thymus? Question 4 options: a) T cells would begin to divide too rapidly and would become cancerous. b) A person would experience an increase in resistance to infectious diseases. c) The thymus would continue to increase in size after adolescence. d) The number of T cells activated would decrease. Question 5 (0.63 points) In comparison to the red pulp, the white pulp __________. Question 5 options: a) has a greater network of capillaries b) contains more red blood cells c) makes up a larger percentage of the volume of the spleen d) contains more lymphoid tissue Question 6 (0.63 points) ___________ employ a "respiratory burst" to produce bactericidal chemicals such as hydrogen peroxide (H2O2) and hypochlorite (HClO). Question 6 options: a) Basophils b) Natural killer cells c) Suppressor T cells d) Neutrophils e) Cytotoxic T cells Question 7 (0.63 points) Complement fixation cannot lead to __________. Question 7 options: a) endogenous pyrexia b) opsonization c) cytolysis d) bacterial phagocytosis e) enhanced inflammation Question 8 (0.63 points) Helper T (TH) cells do not __________. Question 8 options: a) secrete cytokines that stimulate macrophage activity b) secrete cytokines that stimulate clonal selection of B cells c) secrete cytokines that stimulate clonal selection of cytotoxic T cells d) secrete fever-producing chemicals e) secrete inflammatory chemicals Question 9 (0.63 points) Which of the following is something antibodies do not do? Question 9 options: a) Bind to enemy cells, thus changing their shape so their complement-binding sites are exposed b) Neutralize antigens by binding to regions of an antigen that can be pathogenic c) Link antigen molecules together d) Differentiate into memory antibodies, which upon reexposure to the same pathogen would mount a quicker attack e) Bind antigen molecules of two or more enemy cells and stick them together