Unit 5 - Respiratory System Flashcards
(17 cards)
what is it called when air moves into the lungs
inspiration / inhalation
what is it called when air moves out of the lungs
expiration / exhalation
what is ventilation
gas exchange between atmosphere and lungs
what % of the total blood volume is in the pulmonary circulation at any one time
10%
why is the rate of blood flow high for pulmonary circulation
all the output of the right ventricle goes to the lungs
what is blood pressure low relative to the systemic circuit
right ventricle does not pump as forcefully as the left ventricle
how do you calculate the total pressure of a mixture of gases
sum of the partial pressure of individual gases
how do gasses move in terms of pressure
from high pressure to low pressure
how do you calculate the partial pressure of an atmospheric gas
P_atm x % of gas in atmosphere
what is Boyle’s law
P_1V_1 = P_2V_2
where are the muscles that change the volume of the lungs
chest wall
what is pressure inside the lungs referred to as
alveolar pressure
what is pressure outside the lungs referred to as
intrapleural fluid
what is the relationship between volume and pressure of a gas
inverse
how does cigarette smoking complicate ventilation
it paralyzes the cilia
how does cystic fibrosis complicate ventilation
the Cl- channel is defective, preventing the appropriate secretion of water into the mucus
