2026 · Q96
Which one of the following statements about arteries is not correct?
general-sciencebiology-human-body
- AThe inner lining is made of squamous endothelium.
- BThe middle layer is made of smooth muscle and elastic fibres.
- CThe outer layer is made of fibrous connective tissue with collagen fibres.
- DArteries have the thinnest walls amongst any other blood vessels.
Explanation
Arteries have a squamous endothelial inner lining, a middle layer of smooth muscle and elastic fibres, and an outer fibrous connective-tissue layer with collagen — options A, B and C are correct. But arteries, which withstand high pressure, have the thickest walls of any blood vessels; the thinnest-walled vessels are the capillaries. Option D is therefore not correct.