8 Questions
What is the term for the total amount of air that your lungs are able to hold?
Total Lung Capacity
What is the function of the respiratory system in terms of gas exchange?
To allow for diffusion to occur
What happens to the diaphragm during inspiration?
It contracts
What is the term for the amount of air left in the lungs after a maximal exhalation?
Residual Volume
What is the term for the breathing rate, measured in breaths per minute?
Respiration Rate
What is the term for the flow of a gas from a place of high concentration to a place of low concentration?
Diffusion
What happens to the intercostal muscles during inspiration?
They contract
What is the formula to calculate ventilation?
TV x RR
Study Notes
Respiratory System
- Total Lung Capacity (TLC): The total amount of air the lungs can hold, measured in liters.
Breathing Process
- Tidal Volume (TV): The amount of air inspired or expired per breath.
- Respiration Rate (RR): The number of breaths in and out per minute.
- Ventilation: Calculated by multiplying Tidal Volume (TV) and Respiration Rate (RR).
Lung Function
- Residual Volume: The amount of air left in the lungs after a maximal exhalation.
- Functions: Protects against inhaled particles, allows for diffusion to occur.
Inspiration and Expiration
Inspiration
- Diaphragm contracts.
- Intercostal Muscles contract.
- Lungs expand.
Expiration
- Diaphragm relaxes.
- Intercostal Muscles relax.
- Lungs contract.
Diffusion
- The flow of a gas from a place of high concentration to a place of low concentration.
Understand the concepts of Total Lung Capacity and Tidal Volume, and their roles in breathing and gas exchange.
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