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Bronchial Anatomy
Lower Respiratory
Question | Answer |
---|---|
Where is the LOWER Respiratory System? | confined to the Thoracic Cavity |
What are the types of Bronchi? | 1. Primary Bronchi; 2. Secondary/Lobar Bronchi; 3. Tertiary Bronchi |
Where are the Bronchi located? | the DISTAL end of the Trachea |
What is the composition of the Tertiary Bronchi? | Ciliated Columnar Epithelium, few Cartilage Discs, surrounded by Smooth Muscle |
How many Lobar Bronchi are there? | 5 - 2 on LEFT, 3 on RIGHT |
What is the function of the Bronchi? | to MOVE AIR in/out of the Lungs |
How many types of Bronchioles are there? | 2 - 1. Terminal Bronchioles; 2. Respiratory Bronchioles |
What is the composition of the Terminal Bronchioles? | Cartilage replaced by Smooth Muscle, Simple Cuboidal Epithelium |
What is the composition of the Respiratory Bronchioles? | Simple Cuboidal Epithelium - NO Cilia or Goblet Cells |
Where are the Respiratory Bronchioles located? | between the Terminal Bronchioles and Alveoli |
Why do Alveoli and Respiratory Bronchioles have thin walls? | to allow for Gas Exchange (O2 and CO2) |
What is the composition of the Alveoli? | Simple Squamous Epithelium ONLY, surrounded by Capillary Network |
What Cells live within the Alveoli? | Macrophages |
What function do Macrophages serve in the Alveoli? | clean Microbes, filter Smoke |