Respiratory System: Lung Capacity and Volume
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Questions and Answers

What is the term for the total amount of air that your lungs are able to hold?

  • Tidal Volume
  • Total Lung Capacity (correct)
  • Residual Volume
  • Ventilation
  • What is the function of the respiratory system in terms of gas exchange?

  • To transport oxygen to the body
  • To facilitate ventilation
  • To allow for diffusion to occur (correct)
  • To protect against inhaled particles
  • What happens to the diaphragm during inspiration?

  • It relaxes
  • It expands
  • It contracts (correct)
  • It stays the same
  • What is the term for the amount of air left in the lungs after a maximal exhalation?

    <p>Residual Volume</p> Signup and view all the answers

    What is the term for the breathing rate, measured in breaths per minute?

    <p>Respiration Rate</p> Signup and view all the answers

    What is the term for the flow of a gas from a place of high concentration to a place of low concentration?

    <p>Diffusion</p> Signup and view all the answers

    What happens to the intercostal muscles during inspiration?

    <p>They contract</p> Signup and view all the answers

    What is the formula to calculate ventilation?

    <p>TV x RR</p> Signup and view all the answers

    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.

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    Description

    Understand the concepts of Total Lung Capacity and Tidal Volume, and their roles in breathing and gas exchange.

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