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Introduction to the Respiratory System


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[Front]


What is the Kinetic theory of gases
[Back]


Gases are a collection of molecules moving around a space Pressure generated by collisions of molecules with the walls

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9 questions
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What is the Kinetic theory of gases
Gases are a collection of molecules moving around a space Pressure generated by collisions of molecules with the walls
What is the definition of Pressure
The force exerted on a unit area by a gas next to it Pressure ( Pa ) = Force ( N ) / square meter ( m^2 )
What is the blood supply of the intercostal muscles
Intercostal arteries --> Each intercostal space except the last 2 contain an anterior intercostal artery and a antamoses of the posterior intercostal artery Intercostal veins --> 2 anterior and 1 posterior, anterior intercostal veins drain into the subclavian vein while the posterior vein drains into the superior vena cava
What is the difference between the bronchi and bronchioles
Bronchi contain cartilage unlike bronchioles Bronchioles contain more smooth muscles and are generally smaller
What is the typical epithelium found in respiratory organs
Pseudostratified ciliated columnar epithelium
What are the borders of the respiratory system
Above is the neck and the thoracic inlet Intercostal spaces and ribs laterally Posterior is the thoracic vertebrae Diaphragm is below
What are the 3 parts of the sternum
Manubrium → which articulates with the 1st and part of the 2nd costal cartilage Body → Articulates with part of the 2nd and 3rd - 7th costal cartilage Xiphisternum → remains cartilaginous into adult life
What is the function of the 2 intercostal muscles
External intercostal muscles → Inspiratory muscles, elevates the ribs and responsible for chest expansion Internal intercostal muscles → Expiration muscles for expiration