As T-lymphocytes leave the thymus, they are
A. naive and immunocompetent.
B. naive and not yet competent.
C. activated and immunocompetent.
D. activated but not yet competent.
Answer: A
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The esophagus has several variations from the standard plan of the GI tract. These include
A) epithelium of mucosa is stratified squamous. B) epithelium of mucosa is simple columnar. C) muscularis externa has some skeletal muscle. D) epithelium of mucosa is stratified squamous and simple columnar. E) epithelium of mucosa is simple columnar and muscularis externa may be striated muscle.
Which of the following structures is labeled C in the diagram?
a) axon terminal b) trigger zone c) cell body d) peripheral process e) dendrites
The ANS stimulates smooth muscles, skeletal muscles and glands, whereas the somatic nervous system innervates skeletal muscles only
Indicate whether the statement is true or false
In addition to the secretion of bile, the liver is active in ________.
A. detoxification B. converting nutrients into usable forms C. synthesizing blood proteins D. All of these choices are correct.