W3-L1: Respiratory System Flashcards
What is Pulmonary ventilation?
10
the process of moving and exchanging ambient air with air in the lung
What increases the SA of the lungs?
Alveoli
* More than 500 000 000 alveoli
How do we maintain the structure of the alveoli?
Type 2 alveloi secrete Surfactant which plays a crucial role in maintaining the structure and function of the alveoli in the lungs
check that
What are the Zones of Ventilation?
- Conducting Zone (zones 0-16)
- Respiratory Zone (zones 17-23)
What is the conducting zone?
The conducting zone of the respiratory system includes the airways (nose, pharynx, larynx, trachea, bronchi, and bronchioles) that transport air to the lungs but do not participate in gas exchange.
What is the Respiratory Zone?
The respiratory zone is the part of the respiratory system where gas exchange occurs, including the respiratory bronchioles, alveolar ducts, and alveoli.
How do male and female airways differ?
- Zones of conductance (luminal area) was smaller in women than men.
- The smaller area resulted in a greater resistive work of breathing for females compared to males during exercise
What are the functions of the Conducting Zone?
6
- Air transport
- Humidification
- Warming
- Particle filtration
- Vocalization
- Immunoglobin secretion
What is the Breathing process?
What does it depend on?
Inspiration and expiration are dependent on the pressure differential between the atmosphere and the lungs
What is happening during Inhalation?
What is happening during exhalation?
What is Fick’s law of diffusion?
Increased Area = Increased Diffusion
Increased Thickness = Decreased Diffusion
D = Diffusion Constant (solubility/Molecular weight
Lung volumes
TLC = Total Lung Capacity
Tidal Volume = breathing
Vital Capacity = amount of air you can access
Residual Volume = Volume always in the lungs
IRV= whats left inn lungs after
know TV, TLC
memorize formula
What is Minute Ventilation?
breathing frequency x tidal volume
Ventilation increases during exercise
