gaseous exchange (10)

Question 1

Characteristics of an effective surface for gaseous exchange:

Answer 1

1. Large surface area
2. Thin
3. Moist
4. Transport system
5. Ventilation mechanism
6. Protection

Question 2

breathing

Answer 2

the mechanical process that brings source of oxygen into contact with surfaces for gaseous exchange

Question 3

gaseous exchange

Answer 3

exchange of oxygen and carbon dioxide between lungs and blood and blood and tissue

Question 4

respiration

Answer 4

release of energy from energy rich fuel in the presence of oxygen and with water and carbon dioxide as waste products

Question 5

external gaseous exchange occurs between

Answer 5

the alveoli the blood and the lungs

Question 6

blood entering the alveoli in external gaseous exchange

Answer 6

has a low oxygen content and a high carbon content

Question 7

air in the alveoli (external gaseous exchange)

Answer 7

has a high oxygen content and a low carbon content

Question 8

external gaseous exchange concentration gradient

Answer 8

gases move from high concentration to low concentration

Question 9

internal gaseous exchange occurs between

Answer 9

the blood and tissues

Question 10

how does blood reach the tissue in internal gaseous exchange

Answer 10

via capillary blood vessels

Question 11

what’s the content in tissues cells vs blood (internal gaseous exchange)

Answer 11

Tissue cells have lower content of O2 & higher CO2 than blood

Question 12

what is the concentration gradient in internal gaseous exchange

Answer 12

gases move from high to low concentration

Question 13

what % of oxygen is transported in blood plasma

Answer 13

1,5%

Question 14

what % is transported by haemoglobin

Answer 14

98,5%

Question 15

dissociation of O2 at tissue cells is determined by what

Answer 15

Co2 levels

bohrs effect

Question 16

what % is CO2 transported by blood plasma

Answer 16

5%

Question 17

what % diffuses into red blood cells

Answer 17

95%

Question 18

what makes up the 95% of red blood cells

Answer 18

30% binds to haemoglobin

▪ 65% forms bicarbonate ions that diffuse out of the RBCs and are transported in the blood plasma

Question 19

iron deficiency (anemia)

Answer 19

reduces amount of red blood cells & not enough oxygen is transported, affecting cellular respiration

Question 20

carbon and haemoglobin

Answer 20

carbiminohaebloglobing

Question 21

oxygen and haemoglobin

Answer 21

oxyhaemoglobinh