How much calcium should a 25-year-old male or non-pregnant female consume daily?
a. 800 mg
b. 1,000 mg
c. 1,200 mg
d. 1,500 mg
Q. 2What effect does a low vitamin D concentration have on calcium absorption?
a. Increases calcium absorption
b. Decreases calcium absorption
c. No effect on calcium absorption
Q. 3At what age does peak bone mineral density occur (assume adequate calcium intake)?
a. 10 to 20 years
b. 20 to 35 years
c. 35 to 60 years
d. After age 60
Q. 4If dietary calcium is inadequate over a long period of time, how does the body maintain calcium balance?
a. Significantly increases absorption
b. Does not allow calcium to be lost from the body
c. Reabsorbs skeletal calcium
d. Adjusts to a lower blood calcium concentration
Q. 5If an adult consumes 1,000 mg of calcium daily, what is the estimated average amount absorbed from the intestinal tract?
a. 800 mg
b. 600 mg
c. 500 mg
d. 300 mg
Q. 6The source of calcium during the process known as fast calcium exchange is:
a. dissolution of bone.
b. blood plasma.
c. bone fluid.
d. liver calcium stores.
Q. 7The term homeostasis is defined as:
a. a change within the internal environment.
b. the maintenance of a constant internal environment.
c. a constant metabolic demand placed on the body.
d. a low metabolic rate.
Q. 8The type of bone that has the highest turnover is:
a. cartilage.
b. cortical bone.
c. trabecular bone.
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