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Which of the following is not supported by cartilaginous rings
- a)Primary bronchioles
- b)tertiary bronchioles
- c)tracheae
- d)Alveoli
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following is not supported by cartilaginous ringsa)Primar...
Alveoli are tiny air sacs in the lungs where the exchange of gases takes place. They are surrounded by a network of capillaries and do not have cartilaginous rings for support. The bronchial tree, on the other hand, is supported by cartilaginous rings which help to maintain their patency and prevent their collapse. The primary bronchioles, secondary bronchioles, and tertiary bronchioles are part of the bronchial tree and are supported by cartilaginous rings. The trachea, also known as the windpipe, is also part of the bronchial tree and is supported by C-shaped cartilaginous rings.
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Which of the following is not supported by cartilaginous ringsa)Primar...
Understanding Cartilaginous Structures in the Respiratory System
The respiratory system comprises various structures, each playing a crucial role in facilitating breathing. One important feature is the presence of cartilaginous rings, which provide structural support to specific airways.
Role of Cartilaginous Rings
- Cartilaginous rings are C-shaped structures made of hyaline cartilage.
- They prevent the collapse of airways during respiration.
- These rings are essential in maintaining open passages for airflow in the trachea and bronchi.
Supported Structures
- Trachea: The trachea is supported by cartilaginous rings that keep it open, allowing air to travel to the bronchi.
- Primary Bronchi: The primary bronchi, which branch from the trachea, also have cartilaginous rings that ensure they remain patent for air passage.
- Tertiary Bronchi: The tertiary bronchi (or segmental bronchi) continue to have cartilaginous support, providing stability as they branch further into the lungs.
Unsupported Structures
- Alveoli: Unlike the structures mentioned above, alveoli do not have cartilaginous rings. They are tiny air sacs where gas exchange occurs, composed primarily of elastic fibers and epithelial cells. The absence of cartilage allows for the flexibility needed during the breathing cycle.
Conclusion
In summary, the correct answer to the question is option 'D' (Alveoli), as they do not have cartilaginous rings supporting their structure, unlike the trachea, primary bronchi, and tertiary bronchi, which all rely on these rings for structural integrity.
The respiratory system comprises various structures, each playing a crucial role in facilitating breathing. One important feature is the presence of cartilaginous rings, which provide structural support to specific airways.
Role of Cartilaginous Rings
- Cartilaginous rings are C-shaped structures made of hyaline cartilage.
- They prevent the collapse of airways during respiration.
- These rings are essential in maintaining open passages for airflow in the trachea and bronchi.
Supported Structures
- Trachea: The trachea is supported by cartilaginous rings that keep it open, allowing air to travel to the bronchi.
- Primary Bronchi: The primary bronchi, which branch from the trachea, also have cartilaginous rings that ensure they remain patent for air passage.
- Tertiary Bronchi: The tertiary bronchi (or segmental bronchi) continue to have cartilaginous support, providing stability as they branch further into the lungs.
Unsupported Structures
- Alveoli: Unlike the structures mentioned above, alveoli do not have cartilaginous rings. They are tiny air sacs where gas exchange occurs, composed primarily of elastic fibers and epithelial cells. The absence of cartilage allows for the flexibility needed during the breathing cycle.
Conclusion
In summary, the correct answer to the question is option 'D' (Alveoli), as they do not have cartilaginous rings supporting their structure, unlike the trachea, primary bronchi, and tertiary bronchi, which all rely on these rings for structural integrity.
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Which of the following is not supported by cartilaginous ringsa)Primary bronchiolesb)tertiary bronchiolesc)tracheaed)AlveoliCorrect answer is option 'D'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following is not supported by cartilaginous ringsa)Primary bronchiolesb)tertiary bronchiolesc)tracheaed)AlveoliCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is not supported by cartilaginous ringsa)Primary bronchiolesb)tertiary bronchiolesc)tracheaed)AlveoliCorrect answer is option 'D'. Can you explain this answer?.
Which of the following is not supported by cartilaginous ringsa)Primary bronchiolesb)tertiary bronchiolesc)tracheaed)AlveoliCorrect answer is option 'D'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following is not supported by cartilaginous ringsa)Primary bronchiolesb)tertiary bronchiolesc)tracheaed)AlveoliCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is not supported by cartilaginous ringsa)Primary bronchiolesb)tertiary bronchiolesc)tracheaed)AlveoliCorrect answer is option 'D'. Can you explain this answer?.
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