When the body is invaded by antigens, the immune system forms substances called
A) antibodies.
B) macrophages.
C) lymphocytes.
D) helper cells.
Answer: A
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Which of the following is NOT a means by which a pathogen can enter the body?
A. skin or other body surfaces B. inhalation C. by going out in the cold D. fomites
Identify the suffix for feeling.
A. -leptic B. -pnea C. -phoria D. -mania
What percent of peptic ulcers that occur are associated with Helicobacter pylori?
a. 20% b. 30% c. 50% d. 40%
Which of the following statements regarding radiation doses delivered to a patient during a nuclear medicine procedure is correct?
A. The risk of developing cancer is great, therefore these procedures should be avoided during the childbearing years. B. The drugs cause numerous side effects and damage to surrounding structures. C. The drugs decay and are excreted through urine and stool. D. The patient is radioactive for up to one month following the procedure and must limit contact with children. E. The drugs are excreted through the kidneys and liver; therefore, they are not used in patients with significant liver and kidney disease.