Question
Biology Question on Animal Tissues
The cells lining the blood vessels belong to the category of
A
smooth muscle tissue
B
squamous epithelium
C
columnar epithelium
D
connective tissue
Answer
squamous epithelium
Explanation
Solution
Simple squamous epithelium is composed of large flat cells whose edges fit closely together like the tiles in a floor, hence it is also called pavement epithelium. The nuclei of the cells are flattened and often lie at the centre of the cells and cause bulgings of cells surface. The epithelium lines the blood vessels, lymph vessels, heart, terminal bronchioles, alveoli of the lungs, walls of the Bowman's capsules, descending limbs of loop of Henle. In the blood vessels and heart it is called endothelium.