Coronary circulation

Question 1

بسم الله مجريها ومرساها

Answer 1

ربنا عليك توكلنا وإليك أنبينا وإليك المصير

Question 2

سؤال التحنيك العالمي بتاع دكاترة الاناتومي @@

What are the branches of the ascending aorta?

Answer 2

Right and left coronaries

Question 3

origin of the right coronary

origin of left

Answer 3

anterior aortic sinus of ascending aorta

posterior aortic sinus of ascending aorta larger than right and major supply of heart

Question 4

the companioin vein of posterior inteventricular artery ?

Answer 4

middle cardiac vein !

Question 5

Describe the right coronary artery

Answer 5

aris from the anterior aortic sinus of ascending aorta
passes between the pulmonart trunk and right auricle giving the SAN BRANCH 65% AND The right conus artery to the infidunlum of the right ventricle the conus arteriosus and giver ventricular and atrial branches and gives the right marginal artery which runs in the inferior border of the heart to the apex
and then turns round and contiuines in the posterior side giving atrical and ventricular branches and the posterior interventricular artery and ends by anastomsing with circmflex of the left coronary
the posterior interventricular supplies the
1-AVN 80%
2-BOTH VENTRICULAR SIDES
3-THE POST 1/3 OF THE INTERVENTRICULAR SEPTUM
IT IS FRIEND OF THE MIDDLE CARDIAC VEIN

Question 6

the posterior interventricular supplies the

Answer 6

1-AVN 80%
2-BOTH VENTRICULAR SIDES
3-THE POST 1/3 OF THE INTERVENTRICULAR SEPTUM
IT IS FRIEND OF THE MIDDLE CARDIAC VEIN

Question 7

RT CORONARY passes between the pulmonart trunk and right auricle giving BRANCHES?

Answer 7

the SAN BRANCH 65% AND The right conus artery to the infidunlum of the right ventricle the conus arteriosus and giver ventricular and atrial branches

Question 8

RT CORONARY in the inferior border GIVES ?

Answer 8

gives the right marginal artery which runs in the inferior border of the heart to the apex

Question 9

RT CORONARY turns round and contiuines in the posterior side giving ?

Answer 9

and then turns round and contiuines in the posterior side giving atrical and ventricular branches and the posterior interventricular artery and ends by anastomsing with circmflex of the left coronary
the posterior interventricular supplies the
1-AVN 80%
2-BOTH VENTRICULAR SIDES
3-THE POST 1/3 OF THE INTERVENTRICULAR SEPTUM
IT IS FRIEND OF THE MIDDLE CARDIAC VEIN

Question 10

Describe the left coronary artery

Answer 10

it arises from the posterior aortic sinus of the ascending aorta passes behind the pulmonart trunk and then behind it and the left auricle giving the 2 branches
1-the anterior interventricular branch LAD 2- Circumflex artery
the anteriro intervenriuclar artery contiue desinding giving the left conus artery to the infindubulum and atrial and ventrcular branches and supplies the ant 2/3 interventricular septum end by anastomising with posterior interventricular septum
it supplies the apex of the heart!
ENDS by anastomisis with posteriro interventicular
the circumflex artery gives many branches like
the left marginal artery which supply left ventricle
the SAN IN 35%
THE AVN IN 20%
atrial and ventricular
end by anstomsing with the righr coronary artery

Question 11

the circumflex artery gives many branches like

Answer 11

the left marginal artery which supply left ventricle
the SAN IN 35%
THE AVN IN 20%
atrial and ventricular
end by anstomsing with the righr coronary artery

Question 12

Coronaries importance for the pulmnart trunk and ascending aorta?

Answer 12

they give vasa vasorum

Question 13

the right and left bundle branches are supplied by >?

Answer 13

the right bundle branch by the left coronary

the left bundle branch by the right and left coronary

Question 14

the companion vein of LAD ?

Answer 14

The great cardiac vein

Question 15

the collateral are ?

Answer 15

Anatomical not physiological especially in cases of the large branch occlusion there is no compenstaion leading to MI !

Question 16

VENOUS DRAINAGE OF THE HEART ?

Answer 16

the coronary sinus
the anterior cardiac vein
vena cordis minmi

Question 17

comparison of RCA AND LCA

Answer 17

RCA :معتدي 
 Right atrium and part of left 
atrium.
Most of right ventricle.
Part of diaphragmatic surface 
of left ventricle.
Posterior 1/3 of 
interventricular septum
SA node in 65% of cases
AV node in 80% of cases
AV bundle

LCA:
Most of left atrium.
Most of Left ventricle.
Part of anterior surface of 
right ventricle.
Anterior 2/3 of 
interventricular septum 
SA node in 35% of cases
AV node in 20% of cases
Right and left bundle 
branches

Question 18

DESCRIBE CORONARY SINUS

Answer 18

FOUND between the left atrium and left ventricle wide venous channels 3cm from left to the right and open into RA just to the left of the IVC opening
and its open is guarded by a small valve

Question 19

Great cardiac vein describe ?

Answer 19

it is the companion of the LAD and it end in the left of coronary sinus

Question 20

Descrbie the middle cardiac vein

?

Answer 20

it is the companion of posterior interventricular artery and ends in the coronary sinus

Question 21

The small cardiac vein describe ?

Answer 21

it passes in the right posterior interventricular groove companino of RCA and ends at right end of coronary sinus and this may receive the Right marginal veins , which may open directly into the right atrium

Question 22

Posterior vein of left venrticle ?

Answer 22

Ascends in the diaphramtic surface of heart to mid of the coronary sinus

Question 23

The oblique vein of left atrium

Answer 23

descends on the back of left atrium to reach the coronary sinus

Question 24

tributarie of coronary sinus ?

Answer 24

the great middle small cardiac vein 3
the posterior vein of left ventricle
the oblique vein of left atrium

Question 25

anteriro cardiac veins describe ?

Answer 25

2-5 veins asneds on the right ventricle to open dieectly on the right artium

Question 26

Vena cordi minimi describe?

Answer 26

they are small miute veins in the myocardium of the heart opeining directly on the chambers ! espcially
Right artrum and ventricle

Question 27

the lymphatic drainage of heart?

Answer 27

the subendocardial and myocardial drains into subepicardial giving effernts forming trunks
Right to the brachiocephalic LN
Left to the inferiortracheobrhoical LNO

Question 28

( العالمـــــــــــــــــــــــــ (وقيل الحمـــــــــــــــــــد لله رب) ـيـــــــــــــــــــــــــــــــــــــــن)