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heart first year mbbs

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notes on heart from anatomy vishram singh

Institution
Course

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Introduction
HEART
~ Made 2 Muscular
of pumps

Right Pump >
-
RA + RV + Pumonary circulation

heft Pump- > LA + Lv -
Systemic circulation




KA-dO blood From
~ LA receives Oxygenated blood
whole body
through IVc + SVC
From lungs via 4 Pulmonary veins


lungs > Blood
-
-

LA- > Iv
left Av
blood Flows PV
PAX Y orifice
RA- RV
right AV value
Avorifice
Back flow prevented by-heft
LA
-
Prevent backflow
↓ ↓ ~
LV-contracts
Right AV value LY
N RY circulation
lystemic



]
venous
blood
blood >
- accending aorta >
-




(bluish)
~
RV contracts


Trunk

Ateriala
blood into Pulmonary
↓ (Brightred)
its Oxygenated) Tissues
hung (where
Pulmonary circulation


ExternalFeatures
1) Apex
Morphology of heart 2) Base :
posterior surfacecant) (Int)
~
hollow muscular organ 3) 5 surfaces :
posterior sternocostal diaphragmatic, Left , Right
, ,


Middle
location : mediastinum
of ThoracicCavity 4) 4 borders :
Right, Lefts upper , inferior
enclosed in the
pericardium

~
youd heart Right
>
- of median plane
Apex ~ directed+ downward
Conical drea Forward
~

2/3rd heart > Left of median plane Formed by >
- heat ventricle to left
-


~



5th IC
As separateda ~ level at >
-
Left space
/-RA
~
4 Chambers n



LLA Av groove

Liv (CoronarySulcus) Base
V - interventricular
~
posterior surface
> directed us backward
-
Formed by - > 2 Atrium (heft mainly)
grooves
Right
to


23rd of base >
- Posterior surface of
2A Copp to
Apex)
~
snape :
Pyramidal/Conical Yard of base >
-
Posterior surface of

RA
Measurement :



1 = 12cm
,
b = a cm ,
# clinically ,
base
Iupperborderheara PD are attached

weight =
3009- males
2 50g- Females Posterior Surface us lies infront of
↓ middle 4 Thoracic Vertebra
Base of the heart (T5 -
T8)

lying down Position .




& Ts -Ts) -
> errect Position

, Border
Sternocostal Surface Right -
more/less vertical


Formed
>
by - +RV (mainly) Formed by
-
> RA

Extend From ->
Right side of SV) >
- Rightside of IVC
separated by anterior part of Algroove
separates base from sternocostal surface
Left Anvicle + LV (partly)
~ RVSLV separateddy Anterior interventricular
Left Border n curved + oblique
groove
Formed by >
-
LV (mainly) +
Left auricle (partly)
Extends from > Leftaurice Apex
diaphragmatic surface
-
>
-

separates sternocostal surface and left surface
>
-
Flat surface
Rests
>
- on central tendon of diaphragm
Inferior Border~ Horizontal


ForMedDyigtra LV(Lefti Formed

Extends From -
by >
- RV + RA


opening
(some part)
of IVC >
- Apex
separates sternocostal surface from diaphragmatic surface
Left surface
Formed by - Lv (mainly) Upper Border
LA + auricle (partly)
Formed by >
- RA +LA
(mainly)
directed -> upward obscured it
backward >
-
AA + PT (ie infront of
to left


Right Surface Clinical Anatomy
arounded
Atrial wall
Formed by -> Right


demarcation of chambers
of the heart on the surface # crux ofheart
H

1) Coronary Sulcus (AV groove point
Meeting of
Atria ventricles IA groove Post IV groove
~
separate a
,
~
deficient Anteriorly - root of PT Post AV groove

.
Anterior Posterior
part Part

A diaphragmatic surface
Righ
· bu base 3

heft ·
lodges coronary sinus
half half
↓ Y blu
leftaurice 3
downwardso LV
branch
·
blu RA + RI ·
lodges circumflex
A
·


lodges of lest coronary .
coronary. A




2) Anterior Interventricular sulcus
3) Posterior Interventricular sulcus
3 separate
RV + Iv




Anterior > on
-
sternocostal Surface
Anterior IV artery
lodges
cardiac vein
great


Posterior - On diaghramatic surface
Post
Lodges IV Artery
·




middle cardiac veir

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