When comparing veins and arteries of the same diameter, which of the following statements is not true?

A) Veins have thinner walls.
B) Veins have valves.
C) Veins have fewer smooth muscle fibers.
D) Veins have a larger lumen.
E) Veins have more elastic tissue.

Smooth Muscle Fibers

Specialized muscle tissues that contract involuntarily, found in the walls of internal organs such as the stomach, intestines, and blood vessels.

Elastic Tissue

A type of connective tissue that allows many tissues in the body to resume their shape after stretching or contracting.

Thinner Walls

Structures, particularly in the context of blood vessels or chambers of the heart, having less thickness, which can impact their function and efficiency.