Today we will be learning about a critical part of the respiratory system. Part of this system includes where oxygen enters the bloodstream deep in the bronchial tree.
The Bronchial Tree: Anatomy
The bronchial tree is comprised of three main parts: The Upper Respiratory Tract, the Lower Respiratory Tract, and the Respiratory Zone.
The Upper Respiratory Tract is comprised of our mouth and nose, where air enters the respiratory system and begins its journey into the bloodstream. The air then passes through the larynx, a.k.a. the voice box.
The Lower Respiratory Tract is comprised of the trachea, the left/right main (primary) bronchi, the lobar (secondary) bronchi, the segmental (tertiary) bronchi, and the terminal bronchiole. The air flows down the trachea into the lungs where it either goes into the left lung or the right lung. From there, the main branch of the bronchial tree separates into two bronchi (lobar) and from there into the third set of branches (the segmental bronchi).
The Lower Respiratory System: A Transportation System
In this title, I would introduce the topic and what the lesson I am presenting is related to. This would take about 15 seconds.
It enters into the Respiratory Bronchioles. At this point, the bronchial tree has branched off over hundreds of times. The passageway is now extremely small. The respiratory bronchioles lead into the alveolar ducts. The alveolar ducts are directly connected to the alveolus. At this point, the air enters the alveolus through the alveolar sac where it the carbon dioxide & oxygen trade-off occurs.
The Respiratory Zone is where the transfer of air into the bloodstream happens. As the air leaves the Conducting Zone...
On this slide, I would plan on presenting an overview of the entire Bronchial Tree with the three major parts of the tree identified.
Who's ready to answer some questions about the bronchial tree?
In this slide, I would accompany my explanation with photos of the Lower Respiratory Tract and include a video of air flows inside the tract.
The part of the Upper Respiratory Tract consists of the mouth, nose, and larynx.
What are the parts of the Upper Respiratory Tract?
In this slide, I would show an image of the Respiratory Bronchioles and the Alveolar Ducts so that the student can better conceptualize these minuscule parts of the body.
At the end of my presentation, I would ask if anyone has questions regarding the anatomy of the bronchial tree. If not, I would move onto the next section. If a student does have questions, I would answer them for him/her.
I plan to end the class with a series of questions regarding the information that they had just learned in order to see how much information they had retained.