Breathing patterns: how they influence gas exchange

week 2, unit 5, lesson 2

what would it mean if you were to take a shallow breath of air

air wouldn't reach the alveoli at all

alveolar ventilation define

air in and out of the alveoli

alveolar ventilation calculation (V_A)

= V_E - V_D

= (VT​×RR) - (bodyweight x RR)

pulmonary ventilation

how much air enters as a whole (V_E)

measure volume of one breath per min

V˙E​=VT​×RR

tidal volume

(Vt) volume of one breath

respiratory rate

number of times we breathe per min

what is the conducting zone also called

(V_D)anatomical dead space - not participating in gas exchange

anatomical dead space

1 lb for every 1ml in dead space x respiratory rate

normal respiratory rate and tidal volume for an adult

12-20 breaths per min and normal tidal volume is abt 500 mL per breath

pleural membrane

thin, flexible membranes that surround the lungs. the membranes and pressures found within them are to prevent our lungs from collapsing

parietal pleura

thin, flexible membrane adhered to the top of the diaphragm and to the inside of the rib cage

visceral pleura

adhered to the organ

between the visceral and parietal pleura

called intrapleural space. theres a small amount of fluid that acts as a lubricant to make breathing easy and not painful. allows pleural membranes to slip over top of one another or beside one another when we breathe