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Ojs123 Ojs123
wrote...
Posts: 474
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6 years ago
The function of valves in the heart is to
 
  a. form blood cells.
  b. participate in immunity.
  c. prevent backflow of blood.
  d. prevent clot formation.
  e. push blood ahead.

Question 2

Erythropoietin, a hormone that stimulates stem cells in bone marrow to increase erythrocyte
  production, is produced in the
 
  a. bone marrow.
  b. heart.
  c. kidneys.
  d. liver.
  e. lymph nodes.
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Replies
wrote...
6 years ago
Answer to q. 1

C

Answer to q. 2

C
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