ELASTIC
he
elastic rest
#ala AOrta, HE
Slide : -
-
Tunica Intima
:
endothelium +
subendothelium
Tunica media :
Smooth muscle + elastic fiber ->
fenestrated elastic lamina
Tunica adventitia
:
loose connective tissue
·
collagen
·
adipocytes
vasa Vasorum
fibrocytes/fibroblasts ·
intima
media
adventitia
n o t clear
aorta's endothel's
internal elastic nucleus
membrane
endothelium (superficial)
T. Intima subendothelial layer
- >Smooth m
, fibrocyte ,
fibroblast inside S
hr thicker
older ppl
T media
.
elastic fiber fibroblast,
, smooth m
elastic
>many be Gortas
Smooth m
collagen fiber elastic fiber
lighter pink darker pink
T .
media
- T adventitia
loose CT (collagen fiber) fibrocyte
,
,
blood vessel
fibroblast , adipocyte , S
neuron
vasa nervorum vasa vasorum
-13 BV
· FI : BraWallk supply
external elastic membrane
, Tunica intima
-
Tunica media
elastic lamind
· fenestrated
-
-
Tunica adventitid
fibers
·
m
collagen
-
elastic fibers
/fibroblasts
· Vasa VasOrum
Aorta Fuchsin
Slide #91 : -
Resorcin
r
=>
--
/
fenestrated
laminde
8
elastic
O
loose
vasorum
white
connective tissue
collagen
adipocytes
fibers
, MEDIUM ARR
A I
-
-
ERY +
WEIN
N :
MUSCULAR
Femoral Vessels Rovat's Pentachrome
Slide #38 :
,
narrow lumen , trich wall
artery
:
middle Size v
>NOT muscular
v better developed T .
media
V middle size a
a vein :
wide lumen thin wall
muscular ,
A better developed T adventitia
.
internal elastic btw intimac media
membrane single layer
T Intima
·
m .
>endothelium ,
subendothelium
T media
.
>RED
:
nucleus of smooth muscle
I ,
fibroblast , fibrocyte
less elastic fiber
more smooth m than
Par en east
aorta
external elastic membrane T adventipa
.
>multiple layers
T Intima.
a dense Smooth m
We T .
media >v less dense
T adventitia
.
Artery Structure
-
Artery
Turica intira
u
·
thinner than
luminal
in Elastic arteries
↳ based on int . 8 ext .
wavy surface
Lamina
elastic membrane ,
Internal Elastic
wavy light
· lamina o f
,
pink
elastic fibers
Exten
IEL T media
.
Tunica media
elastic/reticular fibers
smooth muscle >
· thick
Elastic Lamina
External
·
wavy ,
defined
vein
adventitid
Et
Tunica
same thickness as trnica media
no into elastic membrane
nerves
mainly collagent
·
adipocytes ·
lymphatics
·
vasa vasorum
, Medium Sized Vein Structure
-
not as distinct !
between layers are
Tunica intima
·
thin
·
endothelium
subendothelial layer
· endothelial cells are supported by
tissue thin connective
connective
+
thin
muscle cells
tissue + smooth
Internal Elastic Lamina
·
thinner IEL ,
only recognized in
specific staining
values
tunica intima lined by endothelium
projections ·
of
values is composed of elastic +
collagenous tissue
core of
runica media
·
thinner
· less smooth muscle cells
,
reticular/elastic fibers
External Elastic
thin
Lamina
rarely seen
· extremely
Tunica adventitia
thick !!! (thicker than tunica medial
·
collagen
· elastic fibers
·
fibroblasts