Module 11 ML-4

Question 1

How much of o2 is dissolved in the blood`

Answer 1

1.5%

Question 2

How much blood is bound to hemoglobain

Answer 2

98.5% due to its low solubility

Question 3

How many oxygen molecules can bind to one hemoglobin subunit?

Answer 3

4

Question 4

TRUE OR FALSE; once o2 is bound to hemoglobin is does not contribute ti partial pressure

Answer 4

true

Question 5

Diffusion of o2 is due to what

Answer 5

the partial pressure gradient

Question 6

what happens when there is small changes of pp of oxygen from 120-60

Answer 6

there isn’t that much change in hemoglobin

Question 7

What happens when hemoglobin comes across low pp of o2

Answer 7

it unbunds the o2 so the oxygen can go where it is needed

Question 8

what is the perctange of bound hemoglobin in the systemic arteries

Answer 8

98%

Question 9

what is the percentage of bound hemoglobin in systemic venous

Answer 9

75%

Question 10

How does o2 move into the capillary

Answer 10

1. dissolved o2 flows in which increased pp so o2 flows into rbc which increased pp and then hemoglobin and o2 can bind

Question 11

How does o2 move out of the capillary

Answer 11

oxygen moves into intersitial fluid and then into cytosol and then into mitochondria which lowes pp and then causes the hemoglobin to unbind

Question 12

as temp increases what happens to the hemoglobin

Answer 12

it loses the affinity for o2 and starts to unbind

Question 13

as temp decreases what happens to the hemoglobin

Answer 13

it stops hemoglobin from unbinding from o2

Question 14

What happens to hemoglobin when you have high acidity, low ph, imcreased co2

Answer 14

decrease affintiy

Question 15

what happens to hemoglobin when you have low acidity, high ph, low co2`

Answer 15

increase affinity

Question 16

left shifted means

Answer 16

o2 binding promoyted

Question 17

right shifted means

Answer 17

02 release promoted

Question 18

what happens when co is bound to hemoglobin

Answer 18

the o2 carrying capacity is low and o2 struggle to unbind to hemoglobin

Question 19

What are the two dangerous effects of hemoglobin

Answer 19

it reduces content of o2 in the blood and it shifts the o2 hb curve to the left (harder to unload o2)

Question 20

Why with co posioning do you suffocate without knowing

Answer 20

because po2 looking normal to chemoreceotors

Question 21

What is anemia

Answer 21

a decrease in hemoglobin concentration of the blood which reduces o2 carrying capcity of the blood