External Features of the Heart Flashcards
know the sides of the hearts pyramid
What is an external sulci?
heart divides into 4 chambers (2 atria and 2 ventricles) to produce surface grooves referred to as sulci.
What is the coronary sulcus?
-circles the heart and separates the atria from the ventricles
The coronary sulcus contains?
-right coronary a.
-sm. cardiac v
-coronary sinus
-circumflex branch of left coronary a.
The Anterior and posterior interventricular contain?
LAD, Great Cardiac Vein Posterior interventricular B. and Middle Cardiac Vein
Know your anterior surface structures ppt 6, 7, 8
The coronary arteries arise from the ?
-aortic sinuses in the initial portion of ascending aorta and supply the heart.
The arterial vessels supply the heart by?
-encircling the heart in coronary sulcus and transversing the anterior and posterior surfaces by traveling thru INTERVENTRICULAR SULCI.
explain ppt 10
know ppt 11
The left of heart:
arises from? Gives blood to ?
Left (main) coronary artery:
-arises from the aorta
-distributes blood to a larger area of myocardium than the right coronary artery.
The left coronary artery supplies:
-most of the left ventricle
-left atrium
-bundle of His
-anterior aspect of the interventricular septum
the left coronary artery bifurcates into what 2 major vessels?
-Left anterior descending artery
-left circumflex artery
the left anterior descending artery/ interventricular a.
-gives diagonal branch
the left anterior descending artery/ interventricular a. SUPPLIES?
-anterior region of the left ventricle
-apex
-anterior interventricular septum
-anterolateral papillary muscle
left circumflex artery supplies the ?
-posterolateral side of the left ventricle
The left circumflex artery
wraps around the left side to the posterior side of the heart and gives of the LEFT MARGINAL branch.
The right coronary artery:
-arises from the aorta
The right coronary artery supplies the ?
-right atrium
-right ventricle
-sinuatrial (SA) node
-AV node
the right coronary gives rise to the following artery branches:
-posterior descending artery
-right marginal artery
-SA nodal artery
-posterior descending artery supplies the …
-inferior wall
-posterior interventricular septum
-posteromedial papillary muscle
Right marginal artery supplies the
-the right ventricular wall
SA nodal artery:
-passes btw the right atrium and the opening of the superior vena cava and supplies the SA node.
How is coronary dominance determined ?
-by the coronary arteries (right or left) that GIVES RISE TO THE POSTERIOR INTERVENTRICULAR ARTERY.
The posterior interventricular septum and part of the left ventricle are supplied by the?
-posterior interventricular A
look at ppt 17
When does the maximum blood flow to the myocardium occcur?
-heart is relaxed
little blood flow occurs when
-heart is contracting
ppt 19
the coronary sinus :
-largest vein draining deoxygenated blood from heart
-lies in the coronary sulcus
-collects most of the venous return from
[great, middle, small cardiac veins]
Great cardiac vein
-begins at apex of heart
-ascends in anterior inter
-runs parallel to left anterior descending artery into coronary sinus
what are the 3 cardiac veins?
-Great cardiac vein
-Middle cardiac vein
-small cardiac vein
middle cardiac vein
-begins at apex of the heart
-ascends in the posterior interventricular sulcus
- // to posterior interventricular artery and drains to coronary sinus
small cardiac vein
-runs along margin of the heart
- runs with the right marginal artery
- drains to the coronary sinus
review ppt 22, 23, 24
What is coronary Angiography?
catheter passed in the ascending aorta through femoral/radial artery
What is coronary artery disease
-lipid deposits in the coronary arteries
What is angina pectoris and myocardial infarction?
-pain originates in the heart due to ischemia
-dec in O2 results in lactic acid build up which causes pain receptors
[pain in L shoulder, down l arm]
Internal Thoracic artery
-carries oxygenated blood flow to ventricles
Where to we obtained heart pulses?
-radial artery pulse
-ulnar artery pulse
-brachial artery pulse
-carotid artery pulse
-facial artery pulse
Lower:
–femoral artery pulse
-popliteal artery pulse
-posterior tibial artery pulse
dorsalis pedis artery pulse
What drains the Brachiocephalic vein
superior vena cava, which goes on to drain into the right atrium of the heart.
