Respiratory System Anatomy: MCQ Quiz!

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  • 1/30 Questions

    The voice box is called the ____.

    • Larynx
    • Pharynx
    • Retina
    • Cochlea
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About This Quiz


Get ready to immerse yourself in the fascinating world of the respiratory system! This quiz will take you on a journey through the intricate mechanisms of the lungs, trachea, bronchi, and more. Explore the captivating process of gas exchange and discover how oxygen plays a vital role in keeping us alive.

In this quiz, you'll dive into questions that will test your understanding of the respiratory system's anatomy and function. From the alveoli's role in oxygen absorption to the importance of diaphragmatic breathing, you'll cover various aspects of respiration.

Whether you're a biology enthusiast, a medical student, or simply curious about how our bodies work, this quiz offers a chance to expand your knowledge. So take a deep breath, embrace the opportunity to learn, and let's explore the wonders of the respiratory system together. Good luck!.

Respiratory System Anatomy: MCQ Quiz! - Quiz

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  • 2. 

    The Trachea is also known as the ____.

    • Diaphragm

    • Windpipe

    • Bronchus

    • Bronchiole

    Correct Answer
    A. Windpipe
    Explanation
    The trachea, commonly known as the windpipe, is a cartilaginous tube that connects the larynx (voice box) to the bronchi, allowing air to pass into and out of the lungs. It is an essential part of the respiratory system, providing a pathway for the exchange of oxygen and carbon dioxide during breathing.

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  • 3. 

    ______ is the air moving out of the lungs.

    • Inspiration

    • Breathing

    • Ventilation

    • Expiration

    Correct Answer
    A. Expiration
    Explanation
    Expiration refers to the process of air moving out of the lungs during exhalation. It is the opposite of inspiration, which is the process of air moving into the lungs during inhalation. During expiration, the diaphragm and intercostal muscles relax, causing the volume of the thoracic cavity to decrease. This decrease in volume increases the pressure in the lungs, forcing air out through the nose or mouth. Expiration is a vital process that helps to remove waste gases, such as carbon dioxide, from the body.

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  • 4. 

    The larynx is a short passage that joins the pharynx with the trachea.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The larynx is indeed a short passage that connects the pharynx (throat) with the trachea (windpipe). It is located in the neck and plays a crucial role in the production of sound and the protection of the airway during swallowing.

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  • 5. 

    The three sections of the pharynx in order are?

    • Nasopharynx / laryngopharynx / oropharynx

    • Laryngopharynx/ nasopharynx/ oropharynx

    • Nasopharynx / oropharynx / laryngopharynx

    • Oropharynx/ laryngopharynx / nasopharynx

    Correct Answer
    A. Nasopharynx / oropharynx / laryngopharynx
    Explanation
    The correct order of the three sections of the pharynx is nasopharynx, oropharynx, and laryngopharynx. The nasopharynx is located behind the nasal cavity and above the soft palate. The oropharynx is located behind the oral cavity and extends from the soft palate to the epiglottis. The laryngopharynx is the lowest part of the pharynx and extends from the epiglottis to the esophagus.

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  • 6. 

    The leaf-like structure that seals off the air passage to the lungs during swallowing is called the ____.

    • Soft Palate

    • Tongue

    • Epiglottis

    • All of the above

    Correct Answer
    A. Epiglottis
    Explanation
    The epiglottis acts as a protective barrier by covering the opening of the trachea when we swallow, guiding food and fluids down the esophagus and into the stomach.

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  • 7. 

    The Nasal cavity is?

    • Divided into the right and left sides.

    • Lined with mucous membranes

    • Has tiny hair-like structures called cilia

    • Filters , moistens and heats air for the journey to the lungs

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    The nasal cavity is divided into the right and left sides, lined with mucous membranes, and has tiny hair-like structures called cilia. These cilia help in filtering, moistening, and heating the air as it travels to the lungs. Therefore, all of the above statements are correct.

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  • 8. 

    The Right Lung has ____ lobes and the Left Lung has ___ lobes.

    • 1 and 2

    • 2 and 3

    • 3 and 2

    • 4 and 2

    Correct Answer
    A. 3 and 2
    Explanation
    The right lung has three lobes and the left lung has two lobes. This is a characteristic anatomical difference between the two lungs.

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  • 9. 

    The pulmonary capillaries are where the exchange of ___ and ___ happens.

    • Carbon dioxide and oxygen

    • Oxygen and nitrogen

    • Oxygen and blood vessel

    • Blood vessel and oxygen

    Correct Answer
    A. Carbon dioxide and oxygen
    Explanation
    The pulmonary capillaries are responsible for the exchange of oxygen and carbon dioxide. Oxygen from the inhaled air diffuses into the capillaries, where it binds to hemoglobin in red blood cells to be transported to the body's tissues. At the same time, carbon dioxide, a waste product of cellular respiration, is released from the tissues into the capillaries. It then diffuses out of the capillaries and into the alveoli of the lungs to be exhaled. Therefore, the correct answer is "oxygen, carbon dioxide."

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  • 10. 

    _______ is the air entering the lungs.

    • Expiration

    • Ventilation

    • Inspiration

    • Breathing

    Correct Answer
    A. Inspiration
    Explanation
    Inspiration is the correct answer because it refers to the process of inhaling or taking in air into the lungs. During inspiration, the diaphragm and intercostal muscles contract, causing the chest cavity to expand and creating a pressure gradient that allows air to flow into the lungs. This is an essential part of the respiratory cycle and is necessary for oxygen to enter the bloodstream and carbon dioxide to be expelled from the body.

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  • 11. 

    The serous membrane, known as the pleura, is divided into two linings. The innermost membrane is known as the _____ pleura.

    • Visceral

    • Parietal

    • Cervical

    • Peritoneal

    Correct Answer
    A. Visceral
    Explanation
    The serous membrane known as the pleura is divided into two linings. The innermost membrane is known as the visceral pleura.

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  • 12. 

    The visceral membrane lines the ____

    • Heart cavity

    • The pharynx

    • The chest

    • The lungs

    Correct Answer
    A. The lungs
    Explanation
    The visceral membrane lines the lungs. It is a thin layer of tissue that covers the outer surface of the lungs, providing protection and allowing for smooth movement during breathing. This membrane is part of the pleura, a double-layered membrane that surrounds the lungs and helps to maintain their shape and position within the chest cavity.

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  • 13. 

    The space between the left and right lung is called the ___ 

    • Thoracic

    • Pulmonary

    • Pleural

    • Mediastinum

    Correct Answer
    A. Mediastinum
    Explanation
    The space between the left and right lung is called the mediastinum. This is the central compartment of the thoracic cavity, located between the two pleural cavities. It contains the heart, great vessels, esophagus, trachea, thymus, and other structures. The mediastinum provides support and protection to these vital organs and allows for their proper functioning.

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  • 14. 

    How many sections does the pharynx have?

    • 1

    • 2

    • 3

    • 4

    Correct Answer
    A. 3
    Explanation
    The pharynx regionally divides into three segments, arranged from top to bottom: the nasal pharynx, situated behind the posterior nasal apertures (choanae); the oral pharynx, positioned behind the opening of the oral cavity; and the laryngeal pharynx, found behind the inlet (opening) of the larynx.

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  • 15. 

    Transportation of respiratory gases through the body by blood is done by the ______ system.

    • Circulatory

    • Lymphatic

    • Muscular

    • Digestive

    Correct Answer
    A. Circulatory
    Explanation
    The transportation of respiratory gases (such as oxygen and carbon dioxide) through the body by blood is done by the circulatory system. The circulatory system, which includes the heart and blood vessels, plays a vital role in carrying oxygen-rich blood from the lungs to the body's tissues and returning carbon dioxide-rich blood to the lungs for oxygenation.

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  • 16. 

    The _____ muscles assist the diaphragm in changing the volume of the thoracic cavity by elevating and lowering the rib cage.

    • Diaphragm

    • Accessory

    • Pleural fluid

    • Intercostal

    Correct Answer
    A. Intercostal
    Explanation
    The intercostal muscles are located between the ribs and assist the diaphragm in changing the volume of the thoracic cavity. These muscles help elevate and lower the rib cage, allowing for inhalation and exhalation. 

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  • 17. 

    The pharynx is also known as the:

    • Windpipe

    • Trachea

    • Voice box

    • Throat

    Correct Answer
    A. Throat
    Explanation
    The pharynx is commonly referred to as the throat. It is a muscular tube that connects the nasal cavity and mouth to the esophagus and larynx. The throat plays a vital role in the respiratory and digestive systems, as it serves as a passage for air, food, and liquids. Additionally, it is involved in producing sound and is responsible for housing the vocal cords. While the windpipe (trachea) and voice box (larynx) are also located in the throat, they are specific structures within the larger anatomical region known as the throat.

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  • 18. 

    The nasopharynx is a collection of_____

    • Lymphatic tissue

    • Adenoids

    • Pharyngeal tonsils

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    The nasopharynx is a part of the throat located behind the nose. It contains lymphatic tissue, which plays a crucial role in the immune system by producing antibodies and filtering out harmful substances. Adenoids, also known as pharyngeal tonsils, are a type of lymphatic tissue found in the nasopharynx. Therefore, the correct answer is "all of the above" because all the options mentioned (lymphatic tissue, adenoids, and pharyngeal tonsils) are present in the nasopharynx.

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  • 19. 

    The overall process by which oxygen is taken from the air and transported to the body cells for the metabolic process, while carbon dioxide and water (the waste products generated by cells ) are returned to the environment.

    • Ventilation

    • Inspiration

    • Expiration

    • Respiration

    Correct Answer
    A. Respiration
    Explanation
    Respiration refers to the overall process of oxygen intake from the air and its transportation to body cells for metabolic processes, while carbon dioxide and water, the waste products generated by cells, are released back into the environment. Ventilation refers to the mechanical process of inhaling and exhaling air, inspiration refers specifically to the act of inhaling, and expiration refers to the act of exhaling. Therefore, respiration encompasses all of these processes and is the correct answer.

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  • 20. 

    The Palatine tonsils (commonly known as the tonsils) are located in the _____

    • Nasopharynx

    • Lateral Oropharynx

    • Laryngopharynx

    Correct Answer
    A. Lateral Oropharynx
    Explanation
    The correct answer is Lateral Oropharynx. The tonsils, also known as the Palatine tonsils, are located in the oropharynx. The oropharynx is the middle part of the pharynx, which is the throat area behind the mouth. It is responsible for conducting both air and food, and it plays a role in the digestive and respiratory systems. The tonsils are part of the immune system and help to fight off infections that enter the body through the mouth and nose.

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  • 21. 

    The ____ is a large muscular partition. It lies between the chest and abdominal cavities.

    Correct Answer
    diaphragm
    Explanation
    The diaphragm is a large muscular partition that separates the chest and abdominal cavities. It plays a crucial role in the process of breathing by contracting and relaxing to create changes in the volume of the thoracic cavity. This movement allows for the expansion and contraction of the lungs, enabling inhalation and exhalation. Additionally, the diaphragm also contributes to other bodily functions such as aiding in digestion and supporting the organs in the abdominal cavity.

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  • 22. 

    The serous membrane, known as the pleura, is divided into two linings. The outermost membrane is known as the_____ pleura.

    • Visceral

    • Peritoneal

    • Parietal

    • Cervical

    Correct Answer
    A. Parietal
    Explanation
    The serous membrane known as the pleura is divided into two linings. The outermost membrane is known as the parietal pleura.

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  • 23. 

    ______ respiration is the exchange of oxygen and carbon dioxide between tissue cells and blood in systemic capillaries.

    • External

    • Internal

    • None of the above

    • All of the above

    Correct Answer
    A. Internal
    Explanation
    Internal respiration refers to the exchange of oxygen and carbon dioxide between tissue cells and blood in systemic capillaries. This process occurs within the body, specifically in the tissues and cells, where oxygen is delivered to the cells and carbon dioxide is removed from them. It is an essential process for maintaining cellular metabolism and ensuring the proper functioning of organs and systems.

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  • 24. 

    What is the correct path air takes when it enters the trachea on its way to the lungs?

    • Bronchi /bronchioles /pulmonary capillaries/ alveoli

    • Bronchioles/ bronchi/ alveoli/ pulmonary capillaries

    • Bronchi / pulmonary capillaries/alveoli/ bronchioles

    • Bronchi /bronchioles/alveoli / pulmonary capillaries

    Correct Answer
    A. Bronchi /bronchioles/alveoli / pulmonary capillaries
    Explanation
    Air enters the trachea and then moves into the bronchi, which are the main airways that lead into the lungs. From the bronchi, the air moves into smaller airways called bronchioles. After the bronchioles, the air reaches the alveoli, which are tiny air sacs where gas exchange occurs. Finally, the air moves into the pulmonary capillaries, which are small blood vessels surrounding the alveoli, where oxygen is taken up by the blood and carbon dioxide is released.

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  • 25. 

    The parietal pleura is the outermost pleura and it lines the ____

    • Thoracic cavity

    • Respiratory cavity

    • Mediastinum cavity

    • The pulmonary cavity

    Correct Answer
    A. Thoracic cavity
    Explanation
    The parietal pleura is the outermost layer of the pleura, a thin membrane that lines the thoracic cavity. It covers the walls of the thoracic cavity and is responsible for protecting the organs within it. The thoracic cavity houses important structures such as the heart, lungs, and major blood vessels. The parietal pleura provides lubrication and allows for smooth movement of the lungs during breathing. Therefore, the correct answer is the thoracic cavity.

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  • 26. 

    When the diaphragm relaxes it______

    • Slowly re-enters the thoracic cavity, thus increasing the pressure within the chest thus expelling air

    • Quickly re-enters the thoracic cavity thus decreasing the pressure within the chest thus drawing in air

    • Fully descends into the abdominal cavity increasing the pressure in the chest thus expelling air

    • Partially descends into the abdominal cavity decreasing the pressure in the chest thus drawing in air

    Correct Answer
    A. Slowly re-enters the thoracic cavity, thus increasing the pressure within the chest thus expelling air
    Explanation
    When the diaphragm relaxes, it slowly re-enters the thoracic cavity. This movement increases the pressure within the chest, which in turn expels air.

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  • 27. 

    Large involuntary movement of air into and out of the lungs is called ___

    • Convection

    • Mass flow

    • Breathing/Ventilation

    • Inhalation

    Correct Answer
    A. Breathing/Ventilation
    Explanation
    The correct term is Breathing/Ventilation. This refers to the large involuntary movement of air into and out of the lungs, involving inhalation (breathing in) and exhalation (breathing out).

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  • 28. 

    When the diaphragm contracts, it_____

    • Quickly re-enters the thoracic cavity thus decreasing the pressure within the chest thus drawing in air

    • Slowly re-enters the thoracic cavity, thus increasing the pressure within the chest thus expelling air

    • Fully descends into the abdominal cavity increasing the pressure in the chest thus expelling air

    • Partially descends into the abdominal cavity decreasing the pressure in the chest thus drawing in air

    Correct Answer
    A. Partially descends into the abdominal cavity decreasing the pressure in the chest thus drawing in air
    Explanation
    When the diaphragm contracts, it partially descends into the abdominal cavity. This movement creates more space in the thoracic cavity, causing a decrease in pressure. As a result, air is drawn into the lungs to equalize the pressure.

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  • 29. 

    The mediastinum contains the _____  (select all that apply)

    • Heart

    • Aorta

    • Esophagus

    • Bronchi

    Correct Answer(s)
    A. Heart
    A. Aorta
    A. Esophagus
    A. Bronchi
    Explanation
    The mediastinum is a central compartment in the chest that contains various structures. These structures include the heart, aorta, esophagus, and bronchi. The heart is located in the mediastinum and is responsible for pumping blood throughout the body. The aorta, the largest artery in the body, also passes through the mediastinum. The esophagus, which carries food from the mouth to the stomach, and the bronchi, which are the main airways of the lungs, are also found in the mediastinum. Therefore, all of the given options are correct as they accurately describe structures that are present in the mediastinum.

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  • 30. 

    External respiration is the exchange of oxygen and carbon dioxide between the ____ and the blood in the ______ capillaries.

    Correct Answer(s)
    alveoli, pulmonary, Alveoli, Pulmonary
Airolle Queen De La Cruz |BPharm |
Medical Writer
Airolle is an accomplished and passionate professional with a strong background in medical content writing, proofreading, and fact-checking. She holds a Bachelor of Pharmacy with an emphasis on Medicinal and Pharmaceutical Chemistry from Sacred Heart College, Lucena City, Quezon. She is skilled in Pharmaceutical Research, Regulatory Requirements, Regulatory Documentation, U.S. Food and Drug Administration (FDA), and Pharmaceutical Sciences.

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