Ch 12 Blood health

Question 1

Fe 2+

Answer 1

ferrous (ferris b)

Question 2

Fe 3+

Answer 2

ferric

Question 3

Iron function

Answer 3

• cofactor enzyme: facilitates redox rxns
• oxygen transport in blood: also makes hemoglobin
• metabolism: cytochrome
• synth collagen and NT (epi, dopa, sero)

Question 4

Iron sources

Answer 4

animal meat (heme)
plant sources (non heme)

Question 5

Iron RDA

Answer 5

8 mg men/post menopause, 18 childbearing women, 27 pregnant

Question 6

Iron deficiency

Answer 6

Usually from blood loss
-microcytic, hypochromic anemia
-fatigue, pica
AT RISK: low income, kids, and preggos

Question 7

Iron excess

Answer 7

hemochromatosis

Question 8

microcytic, hypochromic anemia

Answer 8

small blood cells–carry less O and Fe

Question 9

hemochromatosis

Answer 9

iron excreted less and absorbed more

Question 10

Iron absorption decreases in the presence of ______ and ______.

(Does/does not) affect heme.
(Does/does not) affect non heme

Answer 10

phytates, tannins

does not
does

Question 11

Heme is (better/worse) absorbed than non heme

Answer 11

Better (non heme reduced by phytates and tannins)

Question 12

Vit B12 function

Answer 12

DNA synthesis and protect myelin sheath; activate folic acid

Question 13

Vit B12 sources

Answer 13

meats

Question 14

Vit B12 deficiency

Answer 14

macrocytic, hyperchromic anemia; nerve damage

Question 15

Vit K function

Answer 15

BLOOD CLOTTING; bone mineralization

Question 16

Vit K sources

Answer 16

liver, green leafy vegetable

Question 17

Vit K deficiency

Answer 17

hemorrhage in newborns

Question 18

Babies need Vit K at birth because _________.

Answer 18

babies are still sterile at birth and need help forming microbiota

Question 19

Macrocytic hyperchromic anemia

Answer 19

large immature blood cells