Consider the following statements (i) - (iii), each with two blanks
(i) Pseudostratified epithelium lines the `ul(1)` tract while transitional epithelium lines the `ul(2)` tract
(ii) Lacunae of bones house `ul(3)` while lacunae of cartilage contain `ul(4)`
(iii) Tendon contain bundles of `ul(5)` fibres and rows of `ul(6)` cells between the them
Which one of the following options, gives the correct fill ups for the respective blank numbers from (1) to (6) in the statements ?

Options

A. (1)-respiratoty, (2)-urinary, (5)-white, (6)-fibroblast
B. (1)-urinary, (2)-respiratory, (3)-osteocytes, (4)-chondrocytes
C. (3)-chondrocytes, (4)-osteocytes, (5)-yellow, (6)-fibroblast
D. (1)-respiratory, (2)-urinary, (3)-chondrocytes, (4)-osteocytes

Answer

To solve the question, we need to fill in the blanks in the statements provided. Let's break down each statement step by step.

### Step 1: Analyze Statement (i)
**Statement (i)**: Pseudostratified epithelium lines the `ul(1)` tract while transitional epithelium lines the `ul(2)` tract.

- **Blank (1)**: Pseudostratified epithelium is primarily found in the respiratory system. Therefore, `ul(1)` should be filled with **respiratory**.
- **Blank (2)**: Transitional epithelium is found in the urinary system. Therefore, `ul(2)` should be filled with **urinary**.

### Step 2: Analyze Statement (ii)
**Statement (ii)**: Lacunae of bones house `ul(3)` while lacunae of cartilage contain `ul(4)`.

- **Blank (3)**: The lacunae in bones contain **osteocytes** (the cells that maintain bone tissue). Therefore, `ul(3)` should be filled with **osteocytes**.
- **Blank (4)**: The lacunae in cartilage contain **chondrocytes** (the cells that maintain cartilage). Therefore, `ul(4)` should be filled with **chondrocytes**.

### Step 3: Analyze Statement (iii)
**Statement (iii)**: Tendon contains bundles of `ul(5)` fibres and rows of `ul(6)` cells between them.

- **Blank (5)**: Tendons are made up of **white** collagen fibers. Therefore, `ul(5)` should be filled with **white**.
- **Blank (6)**: The cells found in tendons are **fibroblasts** (which produce collagen and other fibers). Therefore, `ul(6)` should be filled with **fibroblast**.

### Final Summary of Fill-ups
1. `ul(1)` - respiratory
2. `ul(2)` - urinary
3. `ul(3)` - osteocytes
4. `ul(4)` - chondrocytes
5. `ul(5)` - white
6. `ul(6)` - fibroblast

### Correct Option
The correct option that gives the correct fill-ups for the respective blank numbers from (1) to (6) is **option A**: respiratory, urinary, osteocytes, chondrocytes, white, fibroblast.

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