Respiratory System (Wk 13 - Exam 4)) Flashcards
What’s the structure labeled ‘A’ that’s between the Lungs and Larynx?
Trachea
https://drive.google.com/file/d/1IzlY0FU6R1pyLei5mXj_XMmLr0I94al4/view?usp=drivesdk
Would the Trachea be in the respiratory or conducting zone?
Conducting zone
Would the trachea be in the upper or lower respiratory tract?
Lower respiratory tract
What tissue type would support the Trachea to do its tasks?
Ciliated Pseudostratified Columnar Epithelium
Function of Conducting Zone
Warms, cleans, and humidifies air.
Conducting zone has organs that move ___, but don’t participate in ____________.
air and gas exchange
Where does the conducting zone start and end?
Nose to terminal bronchioles
The Respiratory zone has organs that participate in ________________.
gas exchange
Where does the Respiratory zone start and end?
Respiratory bronchioles to Alveoli
Not all ___ reaches the respiratory zone and is involved in gas exchange.
air
What does the Upper respiratory tract include?
Nose, paranasal sinuses, pharynx, and larynx
What does the Lower respiratory tract include?
Trachea, bronchi, and lungs
How does the conduction zone’s task differ from respiratory zone’s task of the respiratory system?
Conducting zone = Warm, humidifies, and cleans air
Respiratory zone = Gas exchange
Order of Respiratory system
Nose
Nasal cavity
Pharynx
Larynx
Trachea
Main (primary) bronchi
Lobar (secondary) bronchi
Segmental (tertiary) bronchi
Terminal bronchiole
Respiratory bronchiole
Alveolar duct
Alveolar sac
Alveoli
O2 goes to bloodstream & CO2 exits the bloodstream
Blood
Imagine that disease X kills type II alveolar cells, which produce pulmonary surfactant. Discuss how that might affect lung function.
Water accumulates and fills up the lungs with water.
Also, the surface tension would increase if this cell gets killed.
What are Type I alveolar cells?
- Squamous epithelial cell of the alveolus
- 97% of alveolar surface
Function of Type II alveolar cells
Releases (secretes) pulmonary surfactant to (reduces) decrease surface tension
Function of Alveolar macrophages
Gets rid of debris and pathogens in alveolus
Shape and function of Lungs
Cone-shaped organs that exchange gases.
What are Lobes?
Single sections of a Lung
How many lobes are on each lung?
- Right lung has 3 lobes
- Left lung has 2 lobes
What is Cardiac notch and its task?
Left lung’s indention, which helps (accommodates) the heart
What is Hilum?
Location on medial surface where nerves, vessels, and a bronchus go to
What is the Pleura?
Serous membrane that surrounds the Lungs and has double layers
What is the Parietal pleura?
Outermost layer that links to thoracic wall
What is Visceral pleura ?
Innermost layer that covers the Lungs’ surface
What is the Pleural cavity?
Space between visceral and parietal pleurae
- contains lubricating serous fluid
Discuss some of the structural differences that
would allow the conductive zone and respiratory
zone to have different functions.
“Conducting zone cleans, humidifies, and warms air and is more thick, while the Respiratory zone is thinner, which allows gases to flow through” (Rysdon).
