Which of the following cell types binds to antigens on plasma membranes of target cells and directly destroys the cells?
A. neutrophils
B. NK cells
C. cytotoxic T cells (CD8 cells)
D. helper T cells (CD4 cells)
E. B cells
C
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These pathways process stimuli received from the internal organs.
A. Visceromotor pathways B. Somatosensory pathways C. Somatomotor pathways D. Internosensory pathways E. Viscerosensory pathways
Which organ system is correctly aligned with its function?
A) Nervous system generates heat B) Lymphatic system maintains blood homeostasis C) Integumentary system forms a physical barrier D) Reproductive system produces blood cells
Which of the following is something antibodies do not do?
A. Bind antigen molecules of two or more enemy cells and stick them together B. Neutralize antigens by binding to regions of an antigen that can be pathogenic C. Bind to enemy cells, thus changing their shape so their complement-binding sites are exposed D. Link antigen molecules together E. Differentiate into memory antibodies, which upon reexposure to the same pathogen would mount a quicker attack
What is the function of the parietal parts of the membranes lining the body cavities?
A) They supply nutrients to the viscera within the various subdivisions of the cavity. B) They secrete lubrication to allow organs to slide by one another without friction. C) They suspend organs from the mediastinum. D) They maintain organ separation. E) None of the answers are correct.