Respiratory System Flashcards
The right lung has _ lobes and the left lung has _ lobes
3
2
Why does the left lung only have 2 lobes?
Because of the cardiac notch
Describe the path air takes as it is passed through the lungs
Trachea –> Bronchii (right and left) –> Bronchioles –> Alveoli
What are alveoli?
They are saclike structures surrounded by capillaries in lungs in which oxygen and carbon dioxide are exchanged
What are the 2 respiratory membranes that aid in diffusion at the alveoli level?
Membrane of the alveolar cells
Membrane of the cells of the capillary wall
How many layers of pleura are there surrounding the lungs?
2
When lung volume increases intrapulmonic pressue _____.
decreases
What muscle is the most important during inspiration?
the diaphragm
The _____ intercostal muscles are active during inspiration and the _____ internal muscles are active during expiration
external
internal
