A foreign substance that stimulates the body's immune response is called a(n):
A. antigen.
B. antibody.
C. histamine.
D. leukotriene.
Answer: A. antigen.
Health Professions
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________ are often used during fluoroscopic procedures to better visualize organ function and abnormalities.
A. Goggles B. Contrast media C. Microscopes D. Magnifying glasses
Health Professions
A confused and anxious patient fell 20 feet from a ladder. What sign suggests that the patient is in shock?
A) Heart rate of 110 B) Deformity to the left arm C) Contusion to his head D) Constricted pupils
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Of the 20 amino acids found in proteins, how many are essential amino acids?
A) 4 B) 5 C) 7 D) 9
Health Professions
Concentrates containing coagulation factors, such as factor VIII, can be prepared from donated blood.
Answer the following statement true (T) or false (F)
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