Podcast
Questions and Answers
Which of the following is NOT a function of the respiratory zone?
Which of the following is NOT a function of the respiratory zone?
What is the process of gas exchange between the alveoli of the lungs and blood in pulmonary capillaries called?
What is the process of gas exchange between the alveoli of the lungs and blood in pulmonary capillaries called?
Which of the following structures is NOT part of the upper respiratory system?
Which of the following structures is NOT part of the upper respiratory system?
What is the function of the terminal bronchioles?
What is the function of the terminal bronchioles?
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Which of the following is a primary goal of respiration?
Which of the following is a primary goal of respiration?
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What is the process of inhalation and exhalation of air called?
What is the process of inhalation and exhalation of air called?
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Which of the following is TRUE about the respiratory membrane?
Which of the following is TRUE about the respiratory membrane?
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Which of the following is a function of the respiratory system NOT related to gas exchange?
Which of the following is a function of the respiratory system NOT related to gas exchange?
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Study Notes
Pulmonary System Function
- Provides gas exchange: intake of oxygen (O2) for delivery to body cells and removal of carbon dioxide (CO2) produced by cells.
- Regulates blood pH.
- Contains receptors for smell, filters inhaled air, produces vocal sounds (phonation), and excretes small amounts of water and heat.
Respiratory System Composition
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Structural Components:
- Upper respiratory system: nose, nasal cavity, pharynx, associated structures
- Lower respiratory system: larynx, trachea, bronchi, lungs
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Functional Components:
- Conducting Zone: Filters, warms, and moistens air; conducts it into the lungs. Includes: nose, nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, terminal bronchioles
- Respiratory Zone: Where gas exchange occurs; main sites of gas exchange between air and blood. Includes: respiratory bronchioles, alveolar ducts, alveolar sacs, alveoli
Respiration: Gas Exchange Process
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Three Steps:
- Pulmonary Ventilation: Inhalation and exhalation of air; exchange of air between atmosphere and lung alveoli.
- External (Pulmonary) Respiration: Exchange of gases between alveoli and pulmonary capillaries across the respiratory membrane. Blood gains O2 and loses CO2.
- Internal (Tissue) Respiration: Exchange of gases between blood in systemic capillaries and tissue cells. Blood loses O2 and gains CO2.
- Cellular Respiration: Metabolic reactions within cells that consume O2 and produce CO2 during ATP production.
Goals of Respiration
- Provide oxygen to tissues and remove carbon dioxide.
- Four Major Functions:
- Pulmonary ventilation (breathing)
- Diffusion of oxygen and carbon dioxide between alveoli and blood
- Transport of oxygen and carbon dioxide in blood and body fluids
- Regulation of ventilation and other aspects of respiration
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Description
Explore the intricacies of the pulmonary system, including its essential functions like gas exchange, blood pH regulation, and structural components. Learn about the upper and lower respiratory systems, and understand the processes involved in respiration and gas exchange.
