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Osteomalacia is characterized by soft bones resulting from


A) vitamin D deficiency in adulthood.
B) vitamin D deficiency in childhood.
C) calcium deficiency in adulthood.
D) calcium deficiency in childhood.

E) None of the above
F) All of the above

Correct Answer

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The most nutrient-dense calcium food source is


A) dark green vegetables.
B) meat.
C) dairy.
D) cereal grains.

E) All of the above
F) A) and B)

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______ is the mineral present in the body in the greatest quantity.The best dietary sources are milk and dairy products.


A) Boron
B) Calcium
C) Magnesium
D) Phosphorus

E) All of the above
F) C) and D)

Correct Answer

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Match of the following

Premises
Low bone mineral density that severely increases risk for bone fractures
Soft bones due to vitamin D deficiency during childhood
Low bone mineral density that moderately increases risk for bone fractures
Soft bones due to vitamin D deficiency during adulthood
Inability to relax muscles due to low blood calcium
Responses
Rickets
Osteoporosis
Osteomalacia
Tetany
Osteopenia

Correct Answer

Low bone mineral density that severely increases risk for bone fractures
Soft bones due to vitamin D deficiency during childhood
Low bone mineral density that moderately increases risk for bone fractures
Soft bones due to vitamin D deficiency during adulthood
Inability to relax muscles due to low blood calcium

Which of the following food combinations would provide the most phosphorus?


A) Strawberries,orange juice,potatoes
B) Cream of wheat,enriched bread,muffin
C) Cheeseburger on whole-wheat bun,cola
D) Broccoli and cauliflower salad

E) B) and D)
F) A) and B)

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Older women may be at risk for phosphorous deficiency if


A) they include too much dairy in their diets.
B) they live alone,eat poorly,and take calcium supplements.
C) they live alone,eat poorly,and take hormone replacement therapy.
D) they stay inside most of the day.

E) None of the above
F) B) and C)

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The difference between osteopenia and osteoporosis is


A) the bone loss of patients with osteopenia is not as severe as that of patients with osteoporosis.
B) the bone loss of patients with osteopenia is worse than that of patients with osteoporosis.
C) osteopenia is caused by heredity whereas osteoporosis is caused by lifestyle.
D) osteopenia can be cured whereas osteoporosis is irreversible.

E) B) and C)
F) A) and D)

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For prevention of osteoporosis,strength training is


A) recommended because the stress on bones stimulates bone maintenance.
B) recommended because it decreases estrogen levels.
C) not recommended because it increases fracture risk.
D) not recommended because it increases testosterone levels.

E) B) and C)
F) A) and C)

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Consumption of this mineral in water has lowered the rate of dental caries because _______ strengthens the crystal structure of teeth.


A) sodium
B) fluoride
C) magnesium
D) iron

E) C) and D)
F) None of the above

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B

Calcium absorption is decreased by


A) phytic acid,oxalic acid,and tannins.
B) periods of growth,such as adolescence and pregnancy.
C) the presence of lactose in the diet.
D) acidic environment of the stomach.

E) A) and D)
F) A) and C)

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Soft bones resulting from a deficiency of vitamin D in adulthood is known as


A) osteopenia.
B) osteomalacia.
C) osteoporosis.
D) osteopathy.

E) A) and B)
F) All of the above

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Type 1 osteoporosis


A) is mainly due to increased estrogen levels.
B) most dramatically affects trabecular bone.
C) is characterized by equal losses of trabecular and cortical bone.
D) affects both men and women over the age of 60.

E) B) and D)
F) A) and D)

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This mineral can be protective for the teeth when introduced into the water supply;however it can cause tooth mottling when consumed in high quantities.


A) Fluoride
B) Copper
C) Iron
D) Selenium

E) All of the above
F) B) and D)

Correct Answer

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Vitamin D is unique among the vitamins because


A) it is absorbed and transported via the lymphatic system.
B) absorption requires bile and fat.
C) it can be formed in the body by skin exposure to the sun.
D) it can be stored.

E) C) and D)
F) B) and D)

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C

Reduced blood calcium levels would result from the actions of


A) calcitriol.
B) calcitonin.
C) parathyroid hormone.
D) All of these choices are correct.

E) A) and D)
F) None of the above

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______ should be taken with meals to enhance absorption.


A) Calcium carbonate
B) Calcium citrate

C) A) and B)
D) undefined

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Which of the following are functions of phosphorus?


A) Activation of enzymes,component of cell membranes,and maintenance of fluid balance
B) Regulation of blood glucose,control of calcium absorption,and synthesis of vitamin D in the liver
C) Energy metabolism,destruction of pathogens,and transport of oxygen in the blood
D) Support of immune function,regulation of cell growth,and production of hormones

E) A) and D)
F) B) and C)

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A reliable source of vitamin D in the diet is


A) poultry.
B) whole-grain bread.
C) yellow squash.
D) fortified milk.

E) B) and C)
F) B) and D)

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In the body,99 percent of calcium is found in


A) the liver.
B) intracellular fluid.
C) bones and teeth.
D) nerve cells.

E) A) and B)
F) C) and D)

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Choose the following that is true about teeth.


A) They have their own blood and nerve supply within the tooth.
B) They are strengthened by fluoride,covered in enamel,and made of hydroxyapatite.
C) They are weakened when vitamin E,vitamin C,and fluoride intake is low.
D) They are not considered bone.

E) B) and C)
F) None of the above

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B

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