repiratory system

Question 1

external respiration

Answer 1

the processes that occur within the lungs involving exchange of O2 and CO2

Question 2

internal respiration

Answer 2

the exchange of gases at the tissue level, where O2 is delivered and CO2 is removed

Question 3

cellular respiration

Answer 3

the process in which the cells use O2 to generate energy in the mitochondria of cells

Question 4

inspiration

Answer 4

an active process requiring the contraction of various respiratory muscles and therefore the expenditure of significant amounts of energy

Question 5

expiration

Answer 5

may be passive - as in quiet breathing (which may not require much energy), or active - as in forced breathing

Question 6

o2 deficit

Answer 6

the difference between the oxygen required to perform a task and the oxygen actually consumed prior to reaching a new steady state

Question 7

onset of blood lactate accumulatio

Answer 7

when lactate levels begin to accumulate rapidly in the blood

Question 8

vo2 max

Answer 8

maximum volume (V) of oxygen (O2) in millilitres that the human body can use in one minute