L13-3

Question 1

what is the term for RBC production

Answer 1

ERY-THRO-POIE-SIS

Question 2

why do runners get anemia? (3 reasons)

Answer 2

1) dietary iron deficiency
2) blood in urine
3) GI bleeding

Question 3

describe pseudo-anemia

Answer 3

Sometimes, athletes have greater plasma volume but same amount of RBC compared to age matched peers, so it seems like athletes have lower RBC

Question 4

why do some women get anemia

Answer 4

menstrual cycle blood loss is greater than normal -> iron deficiency -> anemia

Question 5

why do athletes lose GI blood

Answer 5

bc of lesions

Question 6

describe timing of lesions

Answer 6

Immediately after race, lesions are present

After about 1 week, lesions disappear

Question 7

runner finishes marathon and then has a seizure - why?

Answer 7

1) when you run, there is delayed gastric emptying
2) you stop race and you are vaso-constricted
3) 5 min later, you get all this hypotonic solution rushing into the small intestine bc the stomach hasn’t emptied
4) the serum sodium drops -> seizure

Question 8

define hypo-nat-remia

Answer 8

when the sodium blood level is too low

Question 9

3) 5 min later, you get all this hypotonic solution rushing into the small intestine bc “”

Answer 9

the stomach hasn’t emptied