Anatomy - Cardiovascular System Slide Deck 2 (2 of 3)
How are the coronary arteries and their major branches distributed?
each coronary artery sends off branches to the chambers on either side of the groove, and to any portion of the interventricular septum that may lie deep to the groove.
What is codominance? Give an example.
in which both RCA and LCA give rise to branches that course in or near the posterior interventricular groove occurs in about 18%. A few people have only one coronary artery.
What is Dominance of the coronary arterial system?
is defined by the artery that gives rise to the posterior interventricular artery.Dominance of the right coronary artery is typical (67%) and blood supply from RCA and LCA to the heart is about equal.
What is the sinuatrial node? (nodal A)
pacemaker of the heart supplies supplies S A nodes
what does the right marginal artery do?
supplies the right ventricle- does not reach apex.
What are the steps involved in the Arterial Switch Procedure?
1. Left and right coronary arteries are removed from the aorta, the aorta and pulmonary artery are divided 2. Pulmonary artery is moved in front of the Aorta, Aorta is reconstructed, coronary arteries are connected to the Aorta. 3. Pulmonary artery is reconstructed.
In the S A Nodal Artery what three arteries are found?
1. Right coronary artery, 2. right marginal artery, 3. Sinuatrial SA nodal artery
In the anterior view, What path does the right coronary artery travels?
1. The right coronary artery leaves the wall of the anterior aortic sinus to enter the right atrioventricular sulcus. 2. It gives off a branch to the sinoatrial node and then passes inferiorly in the sulcus, giving off branches to ther ight atrium & right ventricle. 3. At the inferior margin of the heart the right coronary artery gives off a marginal branch to the right ventricle. 4. Then passes around the inferior border of the heart toward its posterior surface.
How many coronary arteries are there?
2 (left and right)
What are the two main coronary arteries?
2 main coronary arteries are the left main and right coronary arteries. Left main coronary artery (LMCA). The left main coronary artery supplies blood to the left side of the heart muscle (the left ventricle and left atrium). ... and Right coronary artery (RCA).
What is the circumflex artery?
A branch off the left coronary artery that circled around the circumference of the heart; it Supplies blood to the left atrium and posterior walls of the left ventricle
In the left coronary artery (Posterior View) which node can be found SA or AV node?
AV
Is the S A Nodal found in the Anterior view or Posterior View
Anterior
Is this photo the anterior or posterior right coronary artery?
Anterior
Is the SA Node in the Anterior or Posterior View - 60%
Anterior View
What are the two great arteries?
Aorta (takes blood to body) and Pulmonary Artery (takes blood to the lung)
What are the common areas where coronary artery blockages can occur that can lead to heart damage? (Coronary artery anterior view)
Areas with black dots
The left coronary artery has two branches what are they?
Divides into two branches: the anterior interventricular (left anterior descending, LAD) and the circumflex coronary arteries.
What is The dominance of the left coronary artery?
Dominance of the left coronary artery occurs in in about 15% of hearts.
What is Dominance of the right coronary artery?
Dominance of the right coronary artery is typical (67%) and blood supply from RCA and LCA to the heart is about equal.
What Path does the Left Coronary Artery: Circumflex artery travel?
Enters the left atrioventricular sulcus and winds around the left margin of the heart onto its posterior surface to supply the left atrium & left ventricle. • Large branches to the left ventricle are called obtuse marginal branches (left marginal). • As the circumflex coronary artery approaches the site where the AV sulcus intersects the posterior interventricular sulcus, it usually decreases in size but does anastomose with a small branch of the right coronary artery given off just prior to its turn into the posterior interventricular artery. • AV nodal branch 10-20%
What circulation path does the Left Coronary Artery: Circumflex travel?
Enters the left atrioventricular sulcus and winds around the left margin of the heart onto its posterior surface to supply the left atrium & left ventricle. • Large branches to the left ventricle are called obtuse branches (left marginal). • As the circumflex coronary artery approaches the site where the AV sulcus intersects the posterior interventricular sulcus, it usually decreases in size but does anastomose with a small branch of the right coronary artery given off just prior to its turn into the posterior interventricular artery. • AV nodal branch 10-20
How does the right coronary artery change into the posterior interventricular artery
In most individuals, the right coronary artery turns down the posterior interventricular sulcus and assumes the name posterior interventricular (posterior descending) artery
Where does most blockages occur?
In the LAD Artery
What does the right coronary artery do?
It runs in the coronary sulcus or atrioventricular sulcus
What are diagonal branches?
LAD branches to the left ventricle are called diagonal branches.
What does the Left Coronary Artery supply?
Left Atrium, Left Ventricle, Portion of the Right Ventricle, Interventricular Septum (anterior 2/3) and AV node is 10-20% SA Node (in 40% of the population) from Circumflex br
Identify the parts in the photo?
Left Ventricle, Right Ventricle, Right Atrium, Left Atrium, Post interVentricular descending artery,
In the Posterior view of the right artery - what is the circulation path that the artery travels?
On the posterior surface, where it continues in the atrioventricular sulcus as far as its junction with the posterior interventricular sulcus
Can you see the circumflex in the posterior or anterior view?
Posterior
Is this photo the anterior or posterior right coronary artery?
Posterior
What is another name for the Posterior interventricular artery
Posterior Descending Artery
Is the NA Node in the Anterior or Posterior View - 80-90%
Posterior View
What does the Right coronary artery supplies
Right Atrium, Right Ventricle, Post 1/3 interventricular septum, SA and AV Nodes,
What are the three coronary arteries?
Right Coronary Artery (RCA) Right marginal artery. Posterior descending artery.
The right coronary artery contains 4 branches what they?
SA Nodal, AV Nodal, Right Marginal, and Posterior interventricular,
In the left coronary artery (Anterior View) which node can be found SA or AV node?
SA Node
Learn the Coronary ARtery Variations
See Photo
The Left Coronary Artery contains two branches, what are they?
The Anterior Interventricular (LAD - left anterior descending) which has the diagonal branch and the Circumflex (which has the left marginal)
/Which coronary artery is mostly blocked?
The LAD artery is the most commonly occluded of the coronary arteries. It provides the major blood supply to the interventricular septum, and thus bundle branches of the conducting system.
What does the LAD supply?
The LAD passes inferiorly in the anterior interventricular sulcus, supplying the right and left ventricles and the major part of the interventricular septum
What path does the LAD takes to the posterior interventricular (decending ) artery
The LAD turns around the inferior margin of the heart and then heads up the posterior interventricular sulcus a short distance, to anastomose with the posterior interventricular (descending) artery
What does the coronary arteries supply?
The coronary arteries supply the myocardium and epicardium (visceral layer of the serous pericardium)
What is the left coronary artery?
The left coronary artery arises from the wall of the left posterior aortic sinus and runs toward the left behind the beginning of the pulmonary trunk. •
Where are the major coronary arteries located?
The major coronary arteries (L/R) are located in the epicardium, lying within the grooves (atrioventricular, interventricular) between the chambers of the heart.
What does the posterior descending artery supply?
The posterior descending artery supplies the atrioventricular node, adjacent sides of the right and left ventricles, and part of the interventricular septum
What does the posterior descending artery supply?
The posterior descending artery supplies the atrioventricular node, adjacent sides of the right and left ventricles, and part of the interventricular septum.
