[DOC] [TLE] Cross-Section of Artery and Vein | Interactive Anatomy Guide [PAR] Arteries and veins have the same layers of tissues in their walls, but the 
proportions of these layers differ. Lining the core of each is a thin layer of 
endothelium, and covering each is a sheath of connective tissue, but an artery 
has thick intermediate layers of elastic and ... One-way valves ensure flow in the 
right direction. [DOC] [TLE] BBC - GCSE Bitesize: Arteries and veins [PAR] The veins have: thin walls; thin layers of muscle and elastic fibres. Unlike arteries, 
veins have one-way valves in them to keep the blood moving in the correct... [DOC] [TLE] 2 2 3 Compare The Structure Of Arteries Capillaries And Vein - Nsb ... [PAR] Oct 6, 2011 ... Capillaries consist of an endothelium which is only one cell thick - Walls of 
arteries and veins consist of 3 layers - The inner layer consists of a thin layer of 
endothelial cells - The middle layer is made ... The walls have fewer elastic fibres 
and the lumen is wider (to allow for easier blood flow) - Veins have two... [DOC] [TLE] Blood Vessel Layers: Tunica Intima, Tunica Media & Tunica ... [PAR] The tunica intima is composed of a thin layer of endothelial cells and lines ... of 
only one layer of endothelial cells, and therefore, capillaries only have a tunica 
intima. ... The walls of arteries and veins have two additional layers, or tunics, 
forming ... and dilate to adjust the volume of blood needed by the tissues that they 
feed. [DOC] [TLE] Blood vessel - Wikipedia [PAR] Tunica media (the thickest layer in arteries): circularly arranged elastic fiber, 
connective tissue, polysaccharide substances, the second and third layer are... [DOC] [TLE] Elastic Arteries - Boundless [PAR] An elastic or conducting artery has a large number of collagen and elastin 
filaments in ... differ from muscular arteries both in size and in the relative amount 
of elastic tissue ... The middle layer of a vein wall with bands of thin smooth 
muscle. [DOC] [TLE] Blood Vessels - Biology Encyclopedia - cells, body, human, system ... [PAR] Veins have the same three layers as arteries and are elastic, but they have a ... 
some veins have valves (tissue flaps) that permit blood to flow in only one 
direction, ... of blood in leg veins can stretch the thin walls, resulting in varicose 
veins. [DOC] [TLE] The Cardiovascular System - SUNY Downstate Medical Center [PAR] Mar 5, 2008 ... The endocardial layer is thin and consists of endothelium on the surface ... come 
to the aortic valve, a thin loose flap of tissue protruding on one side. ... the elastic 
arteries, have thick, strong walls to cope with the sudden high... [DOC] [TLE] Structure and Function of Blood Vessels | Anatomy and Physiology II [PAR] Larger arteries and veins contain small blood vessels within their walls known as 
... outer layers of arteries is thought to be one reason that arterial diseases are 
more ... Both arteries and veins have the same three distinct tissue layers, called 
... In larger arteries, there is also a thick, distinct layer of elastic fibers known as 
the... [DOC] [TLE] What is the structure of arteries? | Reference.com [PAR] Arteries have three main layers or tunics known as the adventitia (outer), ... a thin 
membrane lining and smooth epithelial tissue that is covered by elastic tissue. ... 
The smallest arteries are called capillaries, and they have walls only one cell... [DOC] [TLE] Why do arteries have thicker walls than veins? | Reference.com [PAR] Arteries have thicker walls than veins because they must be able to ... of three 
layers that contain smooth muscle and connective tissue like the arteries, but in... [DOC] [TLE] Blood Vessels Lab [PAR] The tissue components (endothelium, smooth muscle, elastic elements and ... 
Arterioles contain an internal elastic lamina and one or two layers of smooth 
muscle ... Pulmonary arteries and veins: These arteries have thin walls as a result 
of a... [DOC] [TLE] Cardiovascular [PAR] Finally, the tunica adventitia is primarily composed of loose connective tissue ... 
In the aorta, the tunica media constitutes the

Question: A thin layer of tissue; the walls of arteries have elastic ones
Answer: membrane