Question

10. If a mammal has a minute volume of 5200 mL/min, a breathing frequency of 13 breaths/min, a vitai capacity of 4000 mi., and an expiratory reserve voiume of i200 mi, then wihat are the tidai volume and inspiratory reserve volume?

Answer 1

Answer:

Given that;

Minute Volume (V_E) = 5200 mL/min

Breathing frequency (Respiratory rate) = 13 bpm

Vital capacity (VC) = 4600 mL, and

Expiratoy reserve volume (IRV) = 1200 mL

We know that,

$\Rightarrow$ Minute Volume (V_E) = Tidal volume (TV) x Respiratory rate ...(1), and

$\Rightarrow$ Vital capacity (VC) = Inspiratoy reserve volume ( IRV) + Tidal volume (TV) +Expiratoy reserve volume (ERV) ...(2)

Using eqtn (1), Tidal volume (TV) = Minute Volume (V_E) / Respiratory rate

= 5200 mL/min / 13 bpm = 400 ml

$\therefore$   Tidal volume (TV) = 400 mL

Using eqtn (2), Inspiratoy reserve volume ( IRV) =  Vital capacity (VC) - Tidal volume (TV) - Expiratoy reserve volume (ERV)

= 4600 mL - 400 mL - 1200 mL = 3000 mL

$\therefore$ Inspiratoy reserve volume ( IRV) = 3000 mL