to protrect them
Arterial walls contain thick, muscular tissue to pump blood throughout the body. Veins have thinner walls.
Vein
In longitudinal section, the walls of the atria are thinner, and lined with pestinate muscles. The walls of the ventricles, meanwhile, are thick and muscular.
Arteries have thick muscular walls to push your blood and spread out the pulse so it lowers its pressure. Your blood pressure is quite high when it leaves your heart and it comes in pulses. When it finishes going through your arteries and into your capillaries, your body wants it to go slow and be gentle. The muscles in your arteries change it to a smoother flow as they push it along.
The uterus has thick walls because a fertilized egg would need a thick lining in order to implant and begin to grow and develop. The uterus is sterile and has no bacteria present, however large quantities of debris and bacteria is brought into the uterus with the sperm. Therefore, the walls must be strong and muscular because uterine contraction has to occur to expel fluid, dead sperm and bacteria out from the uterus and through the open cervix.
do cappilaries have muscular walls
Arteries are those blood vessels which have smooth muscular tissue. Artery is divided into 3 layers, 1, Tunicia Externa. 2, Tunicia Media. 3, Tunicia Intima/Interna. Tunicia media contains smooth muscles :)
No, that's the stomach. The esophagus is a hollow tube with muscular walls.
The walls were 5 feet thick!
The Uterus.
Arteries have thick elastic walls that can expand and contract, because they carry blood pumped from the heart. Veins return the blood to the heart but the pressure is not the same as in the arteries.