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The cells lining the blood vessels belong to the category of
A
Columnar epithelium
B
Connective tissue
C
Smooth muscle tissue
D
Squamous epithelium
Detailed Solution
The inner lining of blood vessels (the endothelium) is made of a single thin layer of flattened cells with irregular boundaries.
Such a tissue is simple squamous epithelium.
NCERT states that squamous epithelium is found in the walls of blood vessels and the air sacs of lungs, where it is involved in forming a diffusion boundary.
Columnar epithelium lines the stomach and intestine; connective tissue and smooth muscle form the outer layers of the vessel wall, not its lining.
Hence the cells lining the blood vessels belong to squamous epithelium.
Such a tissue is simple squamous epithelium.
NCERT states that squamous epithelium is found in the walls of blood vessels and the air sacs of lungs, where it is involved in forming a diffusion boundary.
Columnar epithelium lines the stomach and intestine; connective tissue and smooth muscle form the outer layers of the vessel wall, not its lining.
Hence the cells lining the blood vessels belong to squamous epithelium.