Question:
Ciliated simple columnar epithelium located at: -
A. Lining of some bronchioles of the respiratory tract
B. Cover surface of ovary
C. Larger ducts of many glands
D. Ventricles of brain
Choose the most appropriate answer from the options given below:
Ciliated simple columnar epithelium located at: -
A. Lining of some bronchioles of the respiratory tract
B. Cover surface of ovary
C. Larger ducts of many glands
D. Ventricles of brain
Choose the most appropriate answer from the options given below:
A. Lining of some bronchioles of the respiratory tract
B. Cover surface of ovary
C. Larger ducts of many glands
D. Ventricles of brain
Choose the most appropriate answer from the options given below:
Show Hint
Associate cilia with the movement of fluid or mucus. Key locations to remember are the respiratory tract (moving mucus), the fallopian tubes (moving the ovum), and the brain ventricles/spinal cord canal (moving cerebrospinal fluid).
Updated On: Sep 20, 2025
- A and D only
- B and C only
- A, B, C and D
- B, C and D only
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Ciliated simple columnar epithelium consists of a single layer of tall, column-shaped cells that have cilia on their apical surface. Cilia are motile structures that beat in a coordinated manner to move substances over the epithelial surface. We need to identify the locations where this specific tissue type is found.
Step 2: Detailed Explanation:
- A. Lining of some bronchioles of the respiratory tract: This is a correct location. The cilia here are part of the mucociliary escalator, which moves mucus and trapped debris up and out of the respiratory tract.
- B. Cover surface of ovary: This is incorrect. The surface of the ovary is covered by simple cuboidal epithelium, often referred to as germinal epithelium.
- C. Larger ducts of many glands: This is incorrect. While some large ducts may have columnar epithelium, it is typically non-ciliated or stratified, not ciliated simple columnar.
- D. Ventricles of brain: This is a correct location. The ventricles of the brain and the central canal of the spinal cord are lined by ependymal cells, which are a type of glial cell that forms a ciliated simple cuboidal to columnar epithelium. The cilia help to circulate the cerebrospinal fluid (CSF).
Step 3: Final Answer:
Based on the analysis, ciliated simple columnar epithelium is found in some bronchioles (A) and the ventricles of the brain (D). Therefore, the correct option is (A).
Ciliated simple columnar epithelium consists of a single layer of tall, column-shaped cells that have cilia on their apical surface. Cilia are motile structures that beat in a coordinated manner to move substances over the epithelial surface. We need to identify the locations where this specific tissue type is found.
Step 2: Detailed Explanation:
- A. Lining of some bronchioles of the respiratory tract: This is a correct location. The cilia here are part of the mucociliary escalator, which moves mucus and trapped debris up and out of the respiratory tract.
- B. Cover surface of ovary: This is incorrect. The surface of the ovary is covered by simple cuboidal epithelium, often referred to as germinal epithelium.
- C. Larger ducts of many glands: This is incorrect. While some large ducts may have columnar epithelium, it is typically non-ciliated or stratified, not ciliated simple columnar.
- D. Ventricles of brain: This is a correct location. The ventricles of the brain and the central canal of the spinal cord are lined by ependymal cells, which are a type of glial cell that forms a ciliated simple cuboidal to columnar epithelium. The cilia help to circulate the cerebrospinal fluid (CSF).
Step 3: Final Answer:
Based on the analysis, ciliated simple columnar epithelium is found in some bronchioles (A) and the ventricles of the brain (D). Therefore, the correct option is (A).
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