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How many structures among the following ...

How many structures among the following are lined by squamous epithelium?
a) lnner visceral layer of Bowman's capsule,
b) Outer parietal layer of Bowman's capsule
c) proximal convoluted tubule ,
d) Thin segment of descending limb of Henle's loop,
e) Thick segment of ascending lemb of Henle's loop,
f) Distal convoluted tubule, and
g) Collecting duct.

A

2

B

3

C

4

D

5

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many structures among the given options are lined by squamous epithelium, we will analyze each structure one by one. 1. **Inner visceral layer of Bowman's capsule**: - The inner visceral layer of Bowman's capsule consists of specialized cells called podocytes, which are not squamous epithelium. Therefore, this structure is **not lined by squamous epithelium**. 2. **Outer parietal layer of Bowman's capsule**: - The outer parietal layer of Bowman's capsule is indeed lined by simple squamous epithelium. Therefore, this structure is **lined by squamous epithelium**. 3. **Proximal convoluted tubule**: - The proximal convoluted tubule is lined by cuboidal epithelium, not squamous epithelium. Therefore, this structure is **not lined by squamous epithelium**. 4. **Thin segment of descending limb of Henle's loop**: - The thin segment of the descending limb of Henle's loop is lined by simple squamous epithelium. Therefore, this structure is **lined by squamous epithelium**. 5. **Thick segment of ascending limb of Henle's loop**: - The thick segment of the ascending limb of Henle's loop is lined by cuboidal epithelium. Therefore, this structure is **not lined by squamous epithelium**. 6. **Distal convoluted tubule**: - The distal convoluted tubule is also lined by cuboidal epithelium. Therefore, this structure is **not lined by squamous epithelium**. 7. **Collecting duct**: - The collecting duct is lined by cuboidal epithelium as well. Therefore, this structure is **not lined by squamous epithelium**. Now, summarizing the findings: - Structures lined by squamous epithelium: - Outer parietal layer of Bowman's capsule - Thin segment of descending limb of Henle's loop Thus, the total number of structures lined by squamous epithelium is **2**. ### Final Answer: 2
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