Recent

  • Show all results for ""

🎧 New: AI-Generated Podcasts Turn your study notes into engaging audio conversations. Learn more

Gas Exchange and Exercise
36 Questions
0 Views

Gas Exchange and Exercise

Created by
@LawfulNovaculite

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

During exercise, what has a major influence on the cardiovascular and ventilatory responses to exercise?

  • The magnitude of cellular respiration (correct)
  • The distribution of cardiac output to exercising muscle
  • The size of the physiological VD
  • The end-capillary PO2 in the exercising muscles

    • What happens to AT when the cardiovascular transport of O2 is impaired during exercise?

  • It remains constant
  • It is reduced (correct)
  • It is eliminated
  • It is increased

    • What are the two powerful ventilatory stimuli produced during exercise above the AT?

  • H+ and O2
  • O2 and CO2
  • CO2 and H+ (correct)
  • CO and H2O

    • What is the average percentage of O2 that can be extracted from muscle blood flow during maximal exercise?

    <p>85%</p> Signup and view all the answers

    What determines exercise ventilation besides the changing rate of CO2 delivery to the lungs?

    <p>The size of the physiological VD and the level at which arterial PCO2 is regulated</p> Signup and view all the answers

    What is the relationship between work rate and the distribution of cardiac output to exercising muscle?

    <p>The distribution of cardiac output to exercising muscle depends on the work rate</p> Signup and view all the answers

    What is the end-capillary PO2 in the exercising muscles during maximal exercise?

    <p>Relatively uniform</p> Signup and view all the answers

    What happens to exercise endurance when exercise is performed above the AT?

    <p>It is reduced</p> Signup and view all the answers

    What is the primary factor that determines the degree of cardiovascular and ventilatory responses to exercise?

    <p>The work rate</p> Signup and view all the answers

    What is the primary role of the carotid bodies during exercise?

    <p>To monitor arterial [H+], providing sufficient ventilatory drive to minimize the decrease in arterial pH that occurs above the AT</p> Signup and view all the answers

    What happens to PaO2 during exercise?

    <p>It normally remains relatively constant</p> Signup and view all the answers

    What is the relationship between exercise above the AT and CO2 production?

    <p>Exercise above the AT increases CO2 production</p> Signup and view all the answers

    During exercise, what has a major influence on the cardiovascular and ventilatory responses to exercise?

    <p>The magnitude of cellular respiration</p> Signup and view all the answers

    What happens to AT when the cardiovascular transport of O2 is impaired during exercise?

    <p>It is reduced</p> Signup and view all the answers

    What are the two powerful ventilatory stimuli produced during exercise above the AT?

    <p>CO2 and H+</p> Signup and view all the answers

    What is the average percentage of O2 that can be extracted from muscle blood flow during maximal exercise?

    <p>85%</p> Signup and view all the answers

    What determines exercise ventilation besides the changing rate of CO2 delivery to the lungs?

    <p>The size of the physiological VD and the level at which arterial PCO2 is regulated</p> Signup and view all the answers

    What is the relationship between work rate and the distribution of cardiac output to exercising muscle?

    <p>The distribution of cardiac output to exercising muscle depends on the work rate</p> Signup and view all the answers

    What is the end-capillary PO2 in the exercising muscles during maximal exercise?

    <p>Relatively uniform</p> Signup and view all the answers

    What happens to exercise endurance when exercise is performed above the AT?

    <p>It is reduced</p> Signup and view all the answers

    What is the primary factor that determines the degree of cardiovascular and ventilatory responses to exercise?

    <p>The work rate</p> Signup and view all the answers

    What is the primary role of the carotid bodies during exercise?

    <p>To monitor arterial [H+], providing sufficient ventilatory drive to minimize the decrease in arterial pH that occurs above the AT</p> Signup and view all the answers

    What happens to PaO2 during exercise?

    <p>It normally remains relatively constant</p> Signup and view all the answers

    What is the relationship between exercise above the AT and CO2 production?

    <p>Exercise above the AT increases CO2 production</p> Signup and view all the answers

    During exercise, what affects external respiration?

    <p>The magnitude of cellular respiration</p> Signup and view all the answers

    What happens to AT when cardiovascular transport of O2 is impaired?

    <p>AT is reduced</p> Signup and view all the answers

    What are the powerful ventilatory stimuli during exercise above the AT?

    <p>CO2 and H+ production</p> Signup and view all the answers

    What alters the gas exchange kinetics during exercise above the AT?

    <p>Increased CO2 and H+ production</p> Signup and view all the answers

    What enables the muscle end-capillary PO2 to be sufficiently high in all muscle capillary beds during maximal exercise?

    <p>The relative uniformity of the regional Q ̇ O2-Q ̇ m relationship</p> Signup and view all the answers

    What determines exercise ventilation?

    <p>The changing rate of CO2 delivery to the lungs</p> Signup and view all the answers

    What provides sufficient ventilatory drive to minimize the decrease in arterial pH that occurs above the AT?

    <p>The carotid bodies monitoring arterial [H+]</p> Signup and view all the answers

    What happens to PaO2 during exercise?

    <p>PaO2 normally remains relatively constant</p> Signup and view all the answers

    What depends on the work rate during exercise?

    <p>Distribution of the cardiac output to exercising muscle</p> Signup and view all the answers

    What reduces exercise endurance?

    <p>Altered gas exchange kinetics</p> Signup and view all the answers

    What is the main influence on the cardiovascular and ventilatory responses to exercise?

    <p>The degree to which the work rate is above an individual's AT</p> Signup and view all the answers

    What is impaired when the cardiovascular transport of O2 is impaired?

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

    More Quizzes Like This

    Gas exchange in lungs lecture 3
    45 questions

    Gas exchange in lungs lecture 3

    WondrousGrowth avatar
    WondrousGrowth
    Gas Exchange in Alveoli
    18 questions

    Gas Exchange in Alveoli

    FearlessPrime avatar
    FearlessPrime
    Gas Exchange and Cellular Respiration Overview
    7 questions

    Gas Exchange and Cellular Respiration Overview

    InvulnerableGold2463 avatar
    InvulnerableGold2463
    Respiratory System Exercises
    10 questions

    Respiratory System Exercises

    CharitableSanctuary4297 avatar
    CharitableSanctuary4297
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser