[Maximum number: 1]

Which row correctly identifies the structure of an artery compared with a vein seen in transverse section under a light microscope?

outer wall of artery

layer of muscles and elastic fibres

diameter of the lumen (hollow space)

thicker

narrower

thicker

thinner

wider

thinner

thicker

narrower

thinner

wider

[Maximum number: 1]

The diagram shows a transverse section through an artery.

Which tissues are present in layer X?

collagen and smooth muscle only

elastic fibres and collagen only

elastic fibres and smooth muscle only

elastic fibres, collagen and smooth muscle

[Maximum number: 1]

Which plan diagram represents the tissues in a major vein?