The lifespan of a typical RBC is about ____________________.
one year
one week
one month
four months
none of the above choices are correct
four months
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Jonah was in a car accident that destroyed the function of his adrenal cortex. Which of the following is most likely to occur as a result of this damage?
A. Increased aldosterone levels B. Increased water reabsorption in the blood C. Decreased regulation of plasma sodium and potassium D. Decreased urine volume
Generally the hormones secretin and cholecystokinin which are released by duodenal enteroendocrine cells will ________
A) speed the churning of the stomach B) increases the output of stomach acid C) speed the activity of the jejunum D) slow the activities of the stomach
The ________ is a marginal zone of the epiphyseal plate where, in children and adolescents, bone can be seen replacing the hyaline cartilage
A) secondary ossification center B) osteoid tissue C) primary ossification center D) epiphyseal line E) metaphysis
The plasma membrane of a cell is composed of:
a. phospholipid molecules b. cholesterol molecules c. protein molecules d. all of the above