Questions and Answers
Place the steps in order below to explain how the body responds to a calcium deficiency.
the thyroid...
In response...
This hormone...
When bone is...
Dissolving...
When the level...
Which of the following is an example of negative feedback loop?
Select all that may apply. A house's...
Because you've given...
Once your temperature...
Complete this diagram reduced vitamin D production
Reduced calcium absorption
Increased production of PTH
, Loss of bones
Fill in the blanks below:
Certain vitamins, such as vitamin D, help the body _____ calcium from your diet. Vitamin D is a
chemical that can be produced by your body using _____. Astronauts in long-term spaceflight,
who do not have direct contact with the sun have to make sure they get enough vitamin D in
their_____. Absorb; Sunlight; Diet
Which of the three following things do you think would be most helpful for astronauts to
maintain a high level of vitamin D? Fish
Cheese
vitamin D
Assuming your crew is between the ages of 19-70 years old, what is the total daily intake of
vitamin D each should receive? 600 IU
Astronauts recieving 100% of their daily recommended value of Vitamin D are getting enough of
the vitamin. If your crew was to eat the meal plan below, would they receive sufficient vitamin
D? No
As commander, what change would you institute to provide your crew with enough vitamin D to
maintain their bones? Add fortified oatmeal (320 IU of vitamin D) to the current
breakfast.