E4: CH 18

Question 1

gas exchange from high to low concentrations happens at the ___ interface

Answer 1

alveolair

Question 2

what does cellular respiration produce

Answer 2

CO2

Question 3

partial is equal at what points

Answer 3

points with outside contact

Question 4

high partial pressure = high ___

Answer 4

concentration

Question 5

diffusion is fast when the ____ ____ difference is higher

Answer 5

concentration gradient

Question 6

normal artery pH

Answer 6

7.4

Question 7

blood pH is heavily ___

Answer 7

buffered

Question 8

blood pH doesn’t change because of what

Answer 8

bicarb pressure in blood acts as a buffer

Question 9

what molecule acts as a buffer in the blood

Answer 9

bicarb

Question 10

hypoxic is ___ O2

Answer 10

low

Question 11

anemic is low O2 ___ to hemoglobin

Answer 11

bound

Question 12

Aschemic is ___ blood flow

Answer 12

low

Question 13

histo- means ___ O2 delivery

Answer 13

prevented

Question 14

diffusion in the blood occurs because

Answer 14

shared basement membranes with capillaries

Question 15

type 1 alveolar cells are made of __ cells

Answer 15

squamous

Question 16

___ is known as the “respiratory pigment”

Answer 16

hemoglobin

Question 17

which part of hemoglobin binds to oxygen

Answer 17

iron

Question 18

Hb releases O2 at what level

Answer 18

tissue level

Question 19

Hb has __ affinity for oxygen

Answer 19

variable

Question 20

most important factor in oxygen affinity determination

Answer 20

oxygen concentration

Question 21

change in oxygen affinity occurs because of

Answer 21

Hb shape change

Question 22

what molecule has an affect on Hb affinity and is an intermediate in glycolysis

Answer 22

2,3-Diphosphoglycerase

Question 23

___ CO2 in blood causes ___ pH because ___ is released in the formation of Lactic Acid

Answer 23

high, increase, H+

Question 24

in pH and O2 saturation, body temperature, CO2 in blood, and 2,3-DPG: an increase in any of them is represented by a curve shift to the right and all effect oxygen delivered by ___ it

Answer 24

increasing

Question 25

what part of the blood is dissolved oxygen located in

Answer 25

plasma

Question 26

why does carbon monoxide so dangerous when it binds to Hb?

Answer 26

because it has a higher affinity to Hb than oxygen and will never release

Question 27

why does the body not send distress signals when carbon monoxide poisoning is occurring?

Answer 27

because chemoreceptors only measure dissolved O2 in the plasma

Question 28

Hemoglobin saturation is affected by what 4 things

Answer 28

temperature pH PCO2 2,3-DPG

Question 29

the # of binding sites is found by multiplying what 2 things

Answer 29

(HB content/RBC) # of RBCs

Question 30

saturation depends on

Answer 30

concentration