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B
Squamous epithelium and striated muscles
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C
Collagen fibres and smooth muscles
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D
Yellow fibres and striated muscles
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Solution
The correct option is A Yellow fibres and smooth muscles Blood vessels
Blood-filled vessels which help in transport of gases, essential nutrients to different parts of the body as well as help in collection of metabolic wastes are called blood vessels.
Structure of blood vessels
Wall of blood vessel is divided into three layers:
Tunica externa: Outermost layer of blood vessels made up of fibrous connective tissue with collagen fibres.
Tunica media: Middle layer of blood vessels made up of smooth muscles and yellow or elastic fibres.
Tunica intima: Innermost layer of blood vessels made up of squamous epithelium.
Final answer: (B) Yellow fibres and smooth muscles