Airway resistance Flashcards
Bronchial tree
The trachea and bronchi have supporting c………. to keep airways op……….
Bronchiole walls contain more s………… muscle, a feature used in airflow re………….
The airways from the n……… cavity through the ter……….. bro…………… are called the cond………… zone
The air is moist………., wa……., and filt………. as it flows through these passageways
Bronchial tree
The trachea and bronchi have supporting cartilage to keep airways open
Bronchiole walls contain more smooth muscle, a feature used in airflow regulation
The airways from the nasal cavity through the terminal bronchioles are called the conducting zone
The air is moistened, warmed, and filtered as it flows through these passageways
Alveoli & Capillaries
Alveoli and Pulmonary Capillaries
The pulmonary arteries carry blood which is low in oxygen from the heart to the lungs
These blood vessels branch repeatedly, eventually forming dense networks of cap……… that completely surround each a…………
Oxygen an carbon dioxide are exchanged between the air in the alveoli and the blood in the pulmonary capillaries
Blood leaves the capillaries via the pulmonary veins, which transport oxygenated blood back to the heart
Alveoli & Capillaries
Alveoli and Pulmonary Capillaries
The pulmonary arteries carry blood which is low in oxygen from the heart to the lungs
These blood vessels branch repeatedly, eventually forming dense networks of capillaries that completely surround each alveolus
Oxygen an carbon dioxide are exchanged between the air in the alveoli and the blood in the pulmonary capillaries
Blood leaves the capillaries via the pulmonary veins, which transport oxygenated blood back to the heart
Resistance & Air Flow 1
Resistance within the Airways
As air flows into the lungs, the gas molecules encounter resi…….. when they strike the walls of the ai……., Therefore the dia……..of the airways affects resistance
What do you think will happen when the bronchiole constricts
Resistance & Air Flow 1
Resistance within the Airways
As air flows into the lungs, the gas molecules encounter resistance when they strike the walls of the airway, Therefore the diameter of the airways affects resistance
What do you think will happen when the bronchiole constricts
Resistance & Air flow 2
Resistance within the airways
Airflow is inversely related to resistance. This relationship is shown by the equation.
Airflow= Pre……./Re……….
In healthy lungs, the airways typically offer li……… resistance, so air flows easily into and out of the lungs
Resistance & Air flow 2
Resistance within the airways
Airflow is inversely related to resistance. This relationship is shown by the equation.
Airflow= Pressure/Resistance
In healthy lungs, the airways typically offer little resistance, so air flows easily into and out of the lungs
Factors affecting Air resistance
Factors affecting airways resistance
Several factors change airway resistance by affecting the dia……… of airways. They do this by contracting or relaxing the smooth muscle in the airway walls, especially the br…………..
Factors affecting Air resistance
Factors affecting airways resistance
Several factors change airway resistance by affecting the diameter of airways. They do this by contracting or relaxing the smooth muscle in the airway walls, especially the bronchioles
