Breathing dynamics: Tv, VE, f

Question 1

What is the king volumes key equation

Answer 1

Minute ventilation (VE) = tidal volume (TV) x frequency (f)

Question 2

What is minute ventilation

Answer 2

The volume of air inspired or expired in one minute

Question 3

What are values for minute ventilation at rest and during maximal exercise

Answer 3

Rest = 7.5l/min

Maximal exercise = 200l/min

Question 4

What is minute ventilations responses to exercise before

Answer 4

increases due to anticipatory

Question 5

What is minute ventilations responses to exercise at the start

Answer 5

Rapid increase in VE due to increased BR and TV

Question 6

What is minute ventilations responses to exercise during it

Answer 6

VE rises during steady exercise then plateaus

Question 7

What is minute ventilations responses to exercise After

Answer 7

Initially rapid but then gradual decrease in VE to resting levels as demand for 02 is reduced

Question 8

What is tidal volume

Answer 8

The volume of air inspired or expired per breath

Question 9

What is frequency

Answer 9

The number of inspirations or expirations per minute