Fill in the blanks
(a) Lining of blood vessels is made up of…… .
(b) Lining of small intestine is made up of……. .
(c) Lining of kidney tubules is made up of…… .
(d) Epithelial cells with cilia are found in ..... of our body

Explanation

### Step-by-Step Solution:

1. **Lining of Blood Vessels:**
- The inner lining of blood vessels is referred to as the endothelium. This layer consists of a single layer of flattened epithelial cells, which is classified as **squamous epithelium**.
- **Answer:** Squamous epithelium

2. **Lining of Small Intestine:**
- In the small intestine, the epithelial cells are tall and slender, often with microvilli to increase surface area for absorption. This type of epithelium is known as **columnar epithelium**.
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