Blood Health Pt1 Flashcards
1
Q
Function of blood
A
- nutrient transport
- removes waste
- primary immune defense (WBC)
- heat transfer
2
Q
components of blood
A
- RBC
- WBC
- platelets
- plasma
3
Q
2 types of iron in blood
A
- hemoglobin (carries O2 in blood)
2. myoglobin (carries O2 in muscles)
4
Q
What is the role of iron in the blood?
A
- iron works as the transportation of for oxygen because it can be easily released and bound to
5
Q
How is iron absorbed?
A
- iron status greatly impacts one’s ability to absorb iron
- women tend to need to absorb more and have a poorer iron status
6
Q
what is the biggest factor of iron absoprtion?
A
what type of iron one consumes
- heme iron is found only in animal-based foods
- nonheme is found in plants and animal based food
- heme is much more absorbable than nonheme
7
Q
What can hinder iron absorption?
A
- zinc
- manganese
- calcium
8
Q
What is the RDA for iron?
A
- 8 mg/day for men
- 14 mg/day for women
- 27 mg/day for pregnant women
9
Q
what does an iron deficiency cause?
A
- reduced fiber absorption
- women and growing children are most at risk
10
Q
Explain how iron is stored.
A
Once absorbed all the iron enters the same pool and is stored within enterocytes in the form of either ferritin or hemosiderin. When iron is ready to be transported, it will be converted into different things depending on the location.
11
Q
Iron excretion
A
- excreted via feces eery 3-6 days
- blood
- sweat
- urine
