The Respiratory System Flashcards
Bronchi
Means two
Bronchus
Means one
Pleura
one layer attached to the lung
one layer attached to the chest wall
Pleural Fluid
secreted to fill the space between the two layers
Process of respiration
the exchange of O2 and CO2 in the lungs
one respiration consists of one inhalation and one exhalation
Inhalation (inspiration)
taking in air
diaphragm contracts and pulls downward
creates a vacuum that pulls in air
Exhalation (expiration)
air is forced out of the lungs
the diaphragm relaxes and moves upwards
Internal respiration
the exchange of gases within the cells
pharynx
tube shaped passage
for both food and air
Epiglottis
lifts up to allow air only into the larynx
stops objects from getting down the lungs
larynx
the voice box
trachea
divided into left and right
bronchi
leading to the left and right lungs
Bronchioles
are smaller branches of the bronchi
pass throughout the lung lobes
Alveoli
tiny one-celled air sacs at the end of the bronchioles
Alveoli
tiny one-celled air sacs at the end of the bronchioles
supplied with blood by capillaries
O2 an CO2 are exchanged between alveoli and
capillaries