A foreign substance that triggers an allergic response in the body is known as:
a. an antigen.
b. histamine.
c. an antibody.
d. a mast cell.
Question 2
You are staffing a first-aid booth at a mountain bike event. A mother approaches you with her 15-year-old son and informs you that her son is severely allergic to bees. Although he hasn't been stung, she is concerned about the auto-injector he carries. The mother states that it was prescribed when her son was 13 years old. She shows you the 0.15 mg auto-injector, and you note that it expired about 12 months ago. Which of the following statements would be most appropriate for you to make?
a. Call your doctor's office for a new prescription because this auto-injector is out of date.
b. If you go to the pharmacy where you got this they will be able to give you a new one.
c. Most medications are still good for months after the expiration date. You can use this one for a little while longer.
d. This medication is good for today but you should call your doctor as soon as possible to replace this.
X chromosome inactivation in female mammals produces the Barr Body.
Body systems and their major functions.
Important Trace Elements in the Body
Dose-response curve with threshold
Exogenous Antigen Processing
Antibody binding to antigen