Body Fluids and Circulation Question 84
84. A vein possesses a large lumen because
[1990]
(a) tunica media and tunica externa form a single coat.
(b) tunica interna and tunica media form a single coat.
(c) tunica interna, tunica media and tunica externa are thin.
(d) tunica media is a thin coat.
Show Answer
Answer : d
Hints & Solutions
(d) Veins have larger lumen because the wall of blood vessels is made up of tunica externa, tunica media & tunica interna is thin in veins.
