What type of adaptive immunity is a vaccine?
a. active natural
b. active artificial
c. passive natural
d. passive artificial
Ans: b. active artificial
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Which layer is absent in thin skin?
A. The reticular layer B. The stratum lucidum C. The hypodermis D. The papillary layer E. The stratum corneum
The muscularis layer in the wall of the digestive tract is
A. skeletal muscle throughout the tract, especially in the large intestine. B. composed of a layer of circular smooth muscle fibers and a layer of longitudinal smooth muscle fibers. C. the layer of the digestive tract wall that contains capillaries. D. connective tissue and the peritoneum. E. in direct contact with the food that is consumed.
The use the body makes of food describes which term?
a. nutrition b. metabolism c. assimilation d. digestion
Multiunit smooth muscle is found: in the walls of large blood vessels and the heart
Indicate whether the statement is true or false