What is the function of Peyer's patches?
A. Guard against pathogens entering the body through the nose or mouth.
B. Fight any bacteria moving into the small intestine from the colon.
C. Remove anything that may be potentially harmful in lymph.
D. Stand guard against and fight any pathogens trying to enter the body.
Answer: B
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With ____, the body fails to recognize and tolerate particular self-antigens
a. delayed hypersensitivity. b. autoimmune disease. c. immune-complex disease. d. immediate hypersensitivity. e. inflammation.
An abnormal, exaggerated response of the immune system is called ________.
A. an innate immune response B. tolerance C. hypersensitivity D. excess immunity E. immunization
The ligament at the head of the femur is the ________.
A. ligamentum primis B. ligamentum ilium C. ligamentum acetabulum D. ligamentum teres E. ligamentum femoris
Reflux of gastric contents into the esophagus occurs because of
A. relaxation of the cardiac sphincter. B. contraction of the pyloric sphincter. C. spasms of the submucosal layer of the stomach wall. D. increased hydrochloric acid production by the parietal cells. E. increased amounts of mucous produced by the stomach.