Which tunic of an artery contains endothelium?

Open in App

Solution

Tunica externa, tunica media, and tunica interna are three tissue layers in the wall of blood vessels. In arterial wall, tunica media is thicker (compared to the wall of vein), endowed with smooth muscles.
Endothelium is the inner most lining of a blood vessel, a part of tunica interna. Endothelium is a specialized squamous epithelium.
Only tissue that surrounds the capillary blood vessel is endothelium. Around capillaries, endothelium show fenestration(pore) for allowing passage(diapedesis) of WBCs from blood to tissue space.

Suggest Corrections

Similar questions

The innermost layer of the wall of an artery is called the endothelium.

Q. State whether the following statements are true or false.
Unlike capillaries, arteries and veins lack an endothelium.

The umbilical artery carries blood from the fetus to the placenta and the umbilical vein carries blood from the placenta to the fetus. Which is the correct statement regarding
differences in blood composition between the umbilical artery and vein?
(A) Blood in the umbilical artery contains less glucose than blood in the umbilical
vein.
(B) Blood in the umbilical artery contains less carbon dioxide than blood in the
umbilical vein.
(C) Blood in the umbilical artery contains more deoxygenated blood in the
umbilical vein.
(D) Blood in the umbilical artery contains less urea than blood in the umbilical
vein.

The only artery containing deoxygenated blood.

Choose between the two options to answer the question specified in the brackets for the following.
(i) Blood in the renal artery or renal vein (Which one has more urea?)
(ii) Blood in the pulmonary artery or pulmonary vein (Which one contains less oxyhemoglobin?)

Join BYJU'S Learning Program