36 Questions
What is the primary reason for oxygen diffusion from the alveoli to the blood?
Lower pO2 in the capillaries compared to the alveoli
What is the primary function of the alveoli?
To facilitate the exchange of gases between the lungs and the bloodstream
Which of the following statements about oxygenated blood is true?
It has a higher pO2 compared to the deoxygenated blood
What is the direction of carbon dioxide diffusion in the alveoli?
From the blood to the alveoli
Which of the following is NOT a function of the spirometer?
Measuring the volume of air in the nasal cavity
What is the term for the surface of gas exchange between the lungs and the bloodstream?
Respiratory membrane
What is the primary site of gas exchange between the blood and the air?
Alveoli
What is the pO2 of the oxygenated blood when it leaves the lungs?
95 mm Hg
What is the primary location of the alveoli in the respiratory system?
At the distal end of the bronchial tree
What is the direction of oxygen diffusion in the tissues?
From the blood to the tissues
What is the process by which gases cross the alveolar membrane?
Diffusion
What is the characteristic of the alveolar membrane that facilitates gas exchange?
Thin and moist
What is the main function of the trachea in the respiratory system?
To warm and humidify the air we breathe
Which of the following structures is responsible for exchanging oxygen and carbon dioxide?
Alveoli
What is the primary purpose of the heart in the respiratory process?
To pump carbon dioxide-rich blood to the lungs
Which of the following blood vessels carries oxygen-rich blood from the lungs to the heart?
Pulmonary veins
What is the byproduct of cellular respiration that is released into the bloodstream?
Carbon dioxide
What is the purpose of the capillary network surrounding the alveoli?
To facilitate the exchange of oxygen and carbon dioxide
What is the primary function of the bronchioles in the respiratory system?
To carry air from the trachea to the alveoli
What is the characteristic of the trachea that prevents it from collapsing?
Its incomplete cartilaginous rings
What is the site where air is prepared for gas exchange with the blood?
Conducting part
What is the role of the respiratory part of the respiratory system?
To exchange oxygen and carbon dioxide
What is the structure that leads to the nasopharynx?
Nasal cavity
What is the direction of air flow through the bronchi?
From the trachea to the alveoli
What is the main function of the nasal passage in the human respiratory system?
To filter out dust particles from the air
Which of the following organisms breathes through its moist cuticle?
Earthworm
What is the role of the diaphragm in the human respiratory system?
To expand the chest cavity during inhalation
How do insects transport air throughout their body?
Through a network of tracheal tubes
What is the pathway of carbon dioxide in the human respiratory system?
Terminal bronchioles -> Bronchus -> Trachea -> Larynx -> Nasal cavity -> Nose
Which of the following organisms can respire through their moist skin?
Amphibian
What is the primary function of the alveoli in the respiratory system?
To facilitate the exchange of oxygen and carbon dioxide
Which of the following occurs during external respiration?
Exchange of oxygen and carbon dioxide between the blood capillaries and the alveoli
What is the purpose of the capillary network surrounding the alveoli?
To facilitate the exchange of oxygen and carbon dioxide
Which of the following is a characteristic of the lung tissue in a patient with a respiratory disease?
It becomes scarred, thickened, and stiff
What happens to the diaphragm during inspiration?
It contracts and descends
Which of the following is a function of the nasal cavity in the respiratory system?
To warm and humidify the air we breathe
Test your understanding of the respiratory system, including the process of oxygen diffusion from the alveoli to the blood, and how it affects the oxygenation of blood. Learn about the role of capillaries in bringing deoxygenated blood to the lungs and the importance of partial pressure in oxygen transport.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
