Ventilation and Gas Exchange

Question 1

Minute ventilation

Answer 1

volume of air expelled in one minute (V_E)

Question 2

Respiratory rate (R_F)

Answer 2

Frequency of breathing per minute

Question 3

Alveolar ventilation (V_alv)

Answer 3

Volume of air reaching respiratory zone per minute

Question 4

Respiration

Answer 4

process of generating ATP

Question 5

anatomical dead space

Answer 5

capacity of the airways incapable of undertaking gas exchange

Question 6

alveolar dead space

Answer 6

capacity of airways that should be able to undergo gas exchange but cannot.

Question 7

physiological dead space

Answer 7

sum of alveolar and anatomical dead space

Question 8

hypoventilation

Answer 8

deficient ventilation of the lungs - cannot meet metabolic demand

Question 9

Hypoventilation causes what in the blood?

Answer 9

Increased pCO₂ - acidosis

Question 10

Hyperventilation

Answer 10

excessive ventilation of lungs on top of metabolic demand

Question 11

Hyperventilation causes what in the blood?

Answer 11

Reduced pCO₂ - alkalosis

Question 12

Hypernoea

Answer 12

Increased depth of breathing (to meet metabolic demand)

Question 13

Hyponoea

Answer 13

Decreased depth of breathing (inadequate to meet metabolic demand)

Question 14

Apnoea

Answer 14

cessation of breathing

Question 15

Dysponoea

Answer 15

Difficulty in breathing

Question 16

Bradypnoea

Answer 16

abnormally SLOW breathing rate

Question 17

Tachypnoea

Answer 17

abnormally FAST breathing rate

Question 18

Orthopnoea

Answer 18

positional difficulty breathing (when lying down)