Dietary Calcium Flashcards Preview

Digestive, Endocrine, and Metabolic Systems > Dietary Calcium > Flashcards

Flashcards in Dietary Calcium Deck (26):
1

You require at least __________ per day.

100 mg

2

What mineral is in bone?

Calcium hydroxyapatite

3

Calcium is absorbed by two ways: ___________________.

- passive absorption (simple diffusion through or around cell)
- active absorption (pumps dependent on ATP)

4

Vitamin D binds to _________________.

nuclear transcription factors to upregulate the expression of the active absorption proteins

5

What nutritional things enhance the absorption of calcium?

Lactose, acidity, and protein

6

What things impair calcium absorption?

Vitamin D deficiency and steatorrhea

7

What nutritional things impair the absorption of calcium?

Alkalinity, oxalic acid, phytic acid, and caffeine

8

Most of the fetal calcium is taken up in the ______________.

third trimester (80%), meaning kids born prematurely will likely be calcium-deficient

9

The Framingham study followed ________________.

kids from age 3 to 13

10

What did the Framingham study show?

Kids with high dairy and meat intake had the highest bone mineral content.

11

Research has shown that girls can have as much as ___________ mg of calcium deposition per day.

2,000 mg

12

What happens to calcium absorption during pregnancy?

It doubles.

13

Other than milk, what foods are helpful in attaining calcium?

Fortified juice
Tofu
Kale
Broccoli

14

Calcium __________ is best absorbed with meals, whlie calcium ____________ is best absorbed between meals.

carbonate; citrate

15

What four groups are most at risk of being calcium/vitamin D deficient?

Adolescent females
Premature infants
Perimenopausal women
Post-bariatric surgical patients

16

Active calcium absorption occurs in the _______________, while passive absorption occurs in ____________.

duodenum; the entire small intestine

17

BMC is primarily controlled by ___________.

genetics (70%)

18

The DASH diet was found to decrease ________________.

bone resorption

19

In addition to increasing GI absorption of calcium, vitamin D also ______________.

decreases urinary excretion

20

Under decreased intake or increased need, calcium absorption can increase up to ______.

37%

21

What happens to the bones during lactation?

Some bone mass is lost, but the lost amount is typically regained after weaning.

22

What is the RDA range for calcium?

700 mg (toddlers) to 1,300 mg (adolescents) per day

23

True or false: the daily recommended intake increases during pregnancy.

False. The body can compensate.

24

Which race/ethnicity has the highest rate of osteoporosis?

Hispanic

25

The best predictor of BMD is ______.

age

26

What is the general consensus for calcium supplementation?

It can have a small effect for those at risk, but also has risk of toxicity.

Decks in Digestive, Endocrine, and Metabolic Systems Class (133):