A&P Flashcards
Major role of respiratory system
Provide O2 and remove CO2
Acid/base balance, speech, smell, fluid balance and temperature control
Cilia
Microscopic structures that trap and move particles towards the mouth for expulsion.
Follow airflow from nose to alveoli
nose, turbinates, nasopharynx, oropharynx, pharynx, trachea, bronchi, segmental, subsegmental, bronchioles, alveoli
Surfactant
lipoprotein, lowers the surface tension in alveoli. Reduces the amount of pressure needed to inflate the alveoli.
Intrapleural space
Space between the plural layers
Amount and purpose of intrapleural fluid.
5-25ml, provides lubrication, increases cohesion
How does fluid drain from the pleural space?
lymphatic circulation
Diaphragm
Major muscle of respiration. During inspiration the diaphragm contracts, increasing intrathoracic pressure. Made up of 2 hemidiaphragms
Ventilation
inspiration and expiration
Elastic recoil
tendency for the lungs to relax after being stretched or expanded
Compliance
measure of the ease of expansion of the lungs
Alveolar Macrophages
rapidly phagocytize inhaled foreign particles
