The three primary functions of the immune system are to prevent ...

[ss2343]

The three primary functions of the immune system are to prevent or ameliorate infections, maintain homeostasis, and to:
 
  a. promote phagocytosis c. prevent or ameliorate allergies
  b. produce white blood cells d. recognize self from nonself

Question 2

When a child has hemophilia, which of the following conditions are present? Select all that apply.
 
  a. The child has either a missing or a deficient clotting factor.
  b. There is a deficiency in the production of platelets.
  c. The prothrombin time will be within normal limits.
  d. The child has an allergic reaction to his or her own body proteins.

[irishcancer18]

Answer to Question 1

D

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A Incorrect. The three primary functions of the immune system are to prevent or ameliorate infections, maintain homeostasis, but not to promote phagocytosis.
B Incorrect. The three primary functions of the immune system are to prevent or ameliorate infections, maintain homeostasis, but not to produce white blood cells.
C Incorrect. The three primary functions of the immune system are to prevent or ameliorate infections, maintain homeostasis, but not to prevent or ameliorate allergies.
D Correct. The three primary functions of the immune system are to prevent or ameliorate infections, maintain homeostasis, and recognize self from nonself.

Answer to Question 2

A, C

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Correct In hemophilia, there is a missing or a deficient clotting factor that prevents the body from making adequate fibrin for clot formation.
The prothrombin time will be within normal limits.
Incorrect The platelet count will not suggest a deficiency, but rather will indicate that it is within normal limits.
Hemophilia is not associated with an allergic reaction to one's own body proteins.