Question:
Identify the INCORRECT statement:
Identify the INCORRECT statement:
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The trachea is kept open by incomplete rings of cartilage.
Updated On: Nov 12, 2026
- Oropharynx is the common passage for food and air
- Tonsils are lymphoid organs
- Epiglottis is a flap that prevents the entry of food into trachea
- Trachea is lined by complete cartilage rings
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Check each statement about the pharynx, tonsils, epiglottis and trachea against the structure of the respiratory tract.
Step 2: Check the true statements
The oropharynx is the passage common to food and air. Tonsils are lymphoid tissue. The epiglottis is a flap that stops food entering the trachea.
Step 3: Check the trachea
The trachea is supported by C-shaped, incomplete rings of cartilage. The open side faces the oesophagus so that food can pass easily.
Step 4: Conclusion
The statement about complete cartilage rings is incorrect.
Final Answer:
The incorrect statement is that the trachea has complete cartilage rings. \[ \boxed{\text{(D) }\text{Trachea is lined by complete cartilage rings}} \]
Check each statement about the pharynx, tonsils, epiglottis and trachea against the structure of the respiratory tract.
Step 2: Check the true statements
The oropharynx is the passage common to food and air. Tonsils are lymphoid tissue. The epiglottis is a flap that stops food entering the trachea.
Step 3: Check the trachea
The trachea is supported by C-shaped, incomplete rings of cartilage. The open side faces the oesophagus so that food can pass easily.
Step 4: Conclusion
The statement about complete cartilage rings is incorrect.
Final Answer:
The incorrect statement is that the trachea has complete cartilage rings. \[ \boxed{\text{(D) }\text{Trachea is lined by complete cartilage rings}} \]
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