Which two organs are the major storage sites for iron in a normal individual?
a. Lymph nodes and muscle
b. Bone marrow and pancreas
c. Spleen and heart
d. Liver and spleen
ANS: D
The liver and spleen have a large amount of L (light) subunits of apoferritin, the protein that stores iron; they thus are major storage sites for iron. The L subunits more readily take up iron for storage than the H (heavy) subunits, which are more predominant in tissues where iron is not normally stored such as the heart.
You might also like to view...
Status epilepticus refers to:
a. a severe seizure that cannot be stopped with diazepam. b. two or more seizures without a period of consciousness between them. c. a very mild type of seizure that is caused by fever. d. a type of grand mal seizure produced by hypoglycemia.
When a person exhibits good body mechanics and lifts properly, the spine is:
a. slightly bent in the upper thoracic region. b. straight at the thoracic region and bent in the lumbar region. c. bent at no more than 15 degrees. d. straight and in an anatomical position.