Arteries are made of 3 distinct layers. A intimia, media and adventitia layer. The media layer is the one that contains all the muscular fibres as well as elastin.
In elastic arteries the media is made from a lot of elastin and not much smooth muscle. These are generally found near the heart (such as ascending aorta) because they need to be able to expand with the large pressure being pumped from the LV. Muscular arteries however have a lot of smooth muscle and not much elastin. These are found away from the heart in areas such as limbs.
Arteries have more elastic tissue (and smooth muscle) than veins. This is due to the fact that arteries are under high pressure, so must be more elastic in order to withstand high pressure pulses.
The veins are under low pressure so require less elastic tissue. Also they have less smooth muscle, resulting in a larger lumen.
Elastic arteries or conducting arteries, are large vessels with diameters of up to 2.5 cm. They transport large volumes of blood away from the heart.
Muscular arteries, or distribution arteries, (also known as medium-sized), transport blood to the body's skeletal muscle and internal organs. It has a diameter of approximately 0.4 cm.
What?
Preferences
§
1
2
3
4
5
6
7
8
9
0
-
=
Backspace
Tab
q
w
e
r
t
y
u
i
o
p
[
]
Return
capslock
a
s
d
f
g
h
j
k
l
;
'
\
shift
`
z
x
c
v
b
n
m
,
.
/
shift
English
Deutsch
Español
Français
Italiano
Português
Русский
alt
alt
Elastic Connective
Elastic Connective Tissue
The outermost layer is known as the tunica externaformerly known as "tunica adventitia" and is composed ofconnective tissue. Inside this layer is thetunica media, ormedia, which is made up ofsmooth musclecells and elastic tissue. The innermost layer, which is in direct contact with the flow of blood is thetunica intima, commonly called theintima. This layer is made up of mainlyendothelial cells. The hollow internal cavity in which the blood flows is called thelumen.
Tunica Media or just Media is the central layer of arteries or veins. In the artery, it is composed of elastic tissue and smooth cell muscles.
The walls of arteries are really thick; they consist of three cell layers. The inner layer is smooth, made of epithelial cells. Because of this smooth texture, it allows the blood that comes through it to flow more freely. The next layer is mostly composed of muscle tissue, and the outermost wall consists of flexible connective tissue. This structure of the artery makes it strong and flexible, and easy for it to pump the blood throughout your body.More Information:Similarly to the wider lumened vein, the artery has numerous structural features.Firstly the artery lumen is small. This is so a high pressure is maintained, and so the blood can flow quickly and efficiently to body tissues.Secondly the arteries wall is very thick. This is so the artery can withstand such high pressure from the narrow lumen. The wall is strengthened thanks to collagenfibres.Thirdly the lumen of the artery is surrounded by a layer of cells known as the endothelium. The endothelium is a thin layer and it simply reduces the friction of blood flow. The endothelium can also unfold.In addition the artery contains elastic tissue. The advantage of elastic tissue is that it can stretch and recoil. Recoil means that it can return the width of the lumen to it's original narrow size. The elastic tissue recoils when the heartbeat rests so high pressure is maintained. This can sometimes be observed on the skin when a vessel 'beats'.Furthermore the artery contains smooth muscle that constricts (narrows) as it contracts. This can be useful to improve gas exchange at the alveoli.
artery walls have more elastic tissue and smooth muscle than veins,
Elastic Connective
Elastic connective tissue.
smooth muscle and elastic connective tissue
Elastic Connective Tissue
your ligaments
dense connective tissue, elastic
Intervertebral discs are the fibrous, elastic tissue that lie between each of the bones in the spine. They function as shock absorbers.
The elastic tissue between each bone in the spine is called as intervertebral disc. It allows movement of vertebral bodies and also acts as shock absorber to the spine.
elastic connective tissue
Because the stomach needs the muscle tissue and the elastic tissue to stretch and digest the food.
The outermost layer is known as the tunica externaformerly known as "tunica adventitia" and is composed ofconnective tissue. Inside this layer is thetunica media, ormedia, which is made up ofsmooth musclecells and elastic tissue. The innermost layer, which is in direct contact with the flow of blood is thetunica intima, commonly called theintima. This layer is made up of mainlyendothelial cells. The hollow internal cavity in which the blood flows is called thelumen.