Which cell is the most important in the initial activation of the immune system?
a. B cell
b. Helper cell
c. Macrophage
d. T cell
Answer: d. T cell
You might also like to view...
The medial boundary of the infratemporal fossa is the
A. posterior surface of the maxilla. B. zygomatic arch. C. greater wing of the sphenoid. D. lateral pterygoid plate. E. ramus of the mandible.
Which of the following cells stand guard against toxins, microbes and other pathogens?
A. Tactile cells B. Dendritic cells C. Keratinocytes D. Melanocytes E. Adipocytes
Which primary germ layer gives rise to the mucosae and associated glands?
A) ectoderm B) blastocyst C) mesoderm D) endoderm E) morula
Which statement best describes how the skin works with the nervous system?
A. Neurons stimulate melanocytes to change the pigment of the skin. B. Neurons detect sensations and control glands and arrector pili. C. Neurons detect the presence of bacteria and viruses. D. Neurons control clot formation and inflammation.