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Article:
N.
Shakuntala
Rao,
Krishna
Kishore,
K.
Sujatha,
H.R.
Krishna
Rao.
AORTIC
ARCH
ARTERIES
IN
MAN
AND
DOMESTIC ANIMALS: A COMPARATIVE STUDY.
Int J Anatomy Res 2016;4(4):3087-3091. DOI: 10.16965/ijar.2016.409.
Type of Article: Original Research
DOI: http://dx.doi.org/10.16965/ijar.2016.409
Page No.: 3087-3091
AORTIC ARCH ARTERIES IN MAN AND DOMESTIC ANIMALS: A COMPARATIVE STUDY
N. Shakuntala Rao *
1
, Krishna Kishore
2
, K. Sujatha
3
, H.R. Krishna Rao
4
.
*1
Professor, Department of Anatomy, P.E.S. Institute of Medical Sciences and Research,
Kuppam, Andhra Pradesh, India.
2
Assistant Professor, Department of Anatomy, P.E.S. Institute of Medical Sciences and Research,
Kuppam, Andhra Pradesh, India.
3
Assistant Professor, Department of Anatomy, P.E.S. Institute of Medical Sciences and Research,
Kuppam, Andhra Pradesh, India.
4
Professor and Head, P.E.S. Institute of Medical Sciences and Research,
Kuppam, Andhra Pradesh, India.
Address
for
Correspondence:
Dr.
N.
Shakuntala
Rao,
Professor,
P.E.S.
Institute
of
Medical
Sciences
and
Research,
K
uppam,
Andhra
Pradesh 517425, India.
E-Mail:
drshakuntala@gmail.com
ABSTRACT
BACKGROUND:
The
arch
of
aorta
in
man
has
three
main
branches
that
supply
the
region
of
head
and
neck
and
upper
limbs.
The
aorta
beginning
at
the
base
of
left
ventricle,
curves
to
the
right
and
ascends
upto
the
level
of
upper
border
of
second
right
sternocostal
joint.
It
then
forms
an
arch
at
the
sternal
angle
ending
at
the
level
of
sternal
end
of
the
second
left
costal
cartilage.
In
animals
the
aorta
is
the
main
systemic
arterial
trunk
and
ascends
to
curve
sharply
backwards
forming
the
arch
to
reach
the
eighth
or
ninth
thoracic
vertebra.
The
branches
arising
from
the
arch
of
aorta
in
man
supply
the
head
and
neck.
A
true
bovine
aortic
arch
is
one
in
which
a
single
large
vessel
originates
from
the
arch
and
gives
rise
to
both
subclavian
arteries
and
a
bicarotid
trunk.
While
man
has
a
right
left
orientation
of
the
brain
and
functioning
capacities
based
on
dominant
cerbral
hemisphere,
animals
have
specific
locomotor
functions
designed
to
feed
and
ruminate.
This
study
was
undertaken
to
compare
the
arrangement
of
branches
arising
from
the
aorta
considering
the
differences in posture and locomotion between the animals and man.
Materials
and
Methods:
The
specimens
of
the
human
heart
were
obtained
from
the
regular
dissection
done
on
the
cadavers
for
teaching
purpose
in
the
department
of
Anatomy,
P.E.S
Institute
of
medical
sciences
and
research.
The
heart
specimens
of
the
domestic
animals
were
obtained
from
the
local
butcher
who
had
legal
permission
to
sacrifice
the
animals
for
sale.
The
heart
was
removed
carefully
along
with
the
arch
and
its
branches.
10%
formalin
was
used to transport and preserve the specimens in glass jars.
Results:
Only
one
large
vessel
was
seen
arising
from
the
convexity
of
the
arch
called
the
Common
brachiocephalic
trunk
(CBCT)
in
domestic
animals.The
brachiocephalic
trunk
arises
from
the
aortic
arch
and
branches
cranially.
It
provides
the
blood
supply
for
the
thoracic
limbs,
the
neck,
the
head,
and
the
ventral
portion
of
the
thorax.
The
brachiocephalic
trunk
gave
both
subclavian
arteries
and
continued
as
the
bicarotid
trunk.
The
bicarotid
trunk
bifurcates
in
to left and right common carotid arteries. The left subclavian artery was found to lie at a lower level than the right in the animals in this study.
Conclusion:
The
arrangement
of
branches
of
aorta
in
man
and
animals
is
certainly
different
and
this
could
be
due
to
postural
adaptations
and
haemodynamics specific to the species. This area has potential for research in trying to understand the evolution of cerebro-vascular flow and dominance.
KEY WORDS: Bovine Aortic Arch, Anterior Aorta, Posterior Aorta, Bicarotid Trunk, Human Aortic Arch, Common Brachiocephalic Trunk.
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