What is another name for Inhalation?
Do the lungs actively bring air into them?
No, The lungs PASSIVELY bring air into them. This happens when the diaphram contracts pulling/expanding the lungs and because "Boyle's law" air enters the lungs.
What does the upper respiratory tract consist of?
- Nasal cavity - Pharynx
What does the Lower respiratory tract consist of?
Larynx, Trachea, Bronchi ----> Alveoli
What are the 4 functions of the UPPER respiratory tract?
1. Warm & Humidify air 2. Remove pathogens 3. Olfaction 4. Serves as a trap to drain out paranasal sinuses & Lacrimal ducts
What do the Turbinates do and how many are there?
Turbinates force air into a regular steady flow over mucosal surfaces. - 3 - (Superior, Middle & Inferior)
Another name for Respiratory of Epithelium
Pseudostratified Ciliated Epithelium
What structures/cells are found in Olfactory epithelium?
Specialized epithelium STILL pseudostratifed. found in superior turbinate and roof of nasal cavity
What are some functions of the Larynx
AKA voice box! Protection also serves as gate for GI an d respiratory passages.
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Fill out the chart
What are the 3 layers of Bronchi
1. Mucosa - (Psuedostratifed ciliated Columnar)
2. Lamina Propia (smooth moscle, elastic tissue)
3. Adventita (connective tissue)
What are the 3 types of Alveolar Cells?
1. Type I pneumocyte - Very thin allow membrane for gas exchange, 95% of alveolar surface.
2. Type II pneumocyte - larger cuboidal cell that make surfactant.
3. Duct cell - essentially a macrophage in alveoli
Label the chart
What are the 3 layers of the Trachea?
1. Mucosa (resipiratory epithilium)
2. Lamina propia (seromucosal glands)
3. Tunica Adventia
What are the 3 cell types found in the mucosa layer of the Trachea?
1. Ciliated columnar
2. Mucous goblet cell
3 Basal short cell/progenitor cells
What is the name of the smooth muscle found in the Trachea (behind C shaped cartilage)
Trachealis smooth muscle
What are the 3 layers in the Bronchi?
1. Mucosa (Respiratory epithelium)
2. Lamina Propia ( smooth muscle/elastic tissue)
3. Adventia (Connective tissue)
What are some defining Characteristics of Club Cells
Found in Terminal Bronchioles
- SECRETE SURFACTANT