Flashcards in Superficial heart Deck (31):
What are the layers of the pericardium?
serous parietal layer- lines inner surface of fibrous layer
serous visceral layer- adheres directly to heart
pericardium cavity between the serous parietal and serous visceral layer
What is the purpose of the pericardium cavity?
Found between the serous parietal and serous visceral pericardium, it allows free movement of the heart
What does the pericardial cavity cover Superiorly?
What do the pericardial cavity surround posteriorly?
veins, pulmonary veins, SVC, IVC
What is the mesocardium?
Connects heart to posterior body wall
Dorsal mesocardium - connects all veins leaving heart
visceral mesocardium- connects the two major arteries leaving
Where is the oblique pericardial sinus?
created by dorsal mesocardium
Found on posterior heart between the pulmonary veins
Good place to stop blood flow during surgery
Transverse pericardial sinus location?
created between two mesocardia
posterior to ascending aorta and pulmonary trunk
anterior to SVC
great place for bacterial accumulation
What are the sides of the heart?
anterior - sternocostal
right pulmonary surface
left pulmonary surface
What is the superior limit of the heart?
pericardial cavity -2nd intercostal space
heart-3rd intercostal space
Contains-SVC,ascending aorta, pulmonary trunk
What is the left limit?
Lateral to sternum inferiorly, To midclavicular at T5,
Contains left ventricle and small portion of left atrium
where is the right limit?
adjacent to sternum
contains the Right Atrium
Where is the inferior border?
Xiphissternal joint (rest on diaphragm)
contains left ventricle and small portion of right ventricle
where is the posterior border?
Slightly off vertical plane, slightly rotated clockwise.
defined by valve rings
What does the anterior border contain?
Right ventricle, some left ventricle
how is heart heard from chest?
slight latteraly to the sternum.
Classic lub dub(lub -A/Vvalve closing)
Dub- semilunar valve closing
Where can the pulmonary valve is found an heard?
found - highest valve(third costal cartilage)
heard -left side of sternum, 2nd intercostal space
Where is the aortic valve found and heard?
found-below and right of Pulmonary valve, just below 3rd intercostal space.
Heard - Right side of sternum 2nd intercostal space
Where can the Mitral valve be found and heard?
Found- next to the lowest valve, adjacent to the 4th and 5th costal cartilage
heard- Apex of heart, left side of sternum fifth costal cartilage, mid clavicular line
Where can the tricuspid valve be found and heard?
Found -adjacent to fifth and sixth costal cartilage.
heard - left side of sternum above or below 6th costal cartilage
name the branches of the right coronary artery?
SA nodal branch
Right marginal branch
posterior interventricular artery
A/V nodal artery
name the branches of of the left coronary artery?
left marginal artery
lateral (diagonal Branch )
anterior interventricular artery
What is the origin of the right coronary artery?
sinus of right aortic leaf
What is the orgin of the SA Nodal branch?
early branch of SA node
most often from coronary may branch from circumflex
What Does marginal branch supply?
goes along the right margin of heart,
supplies right ventricle muscles
Where is the posterior interventricular artery and what does it supply?
Posterior inferior surface of interventricular sulcus
supplie 25% of interventricular septum and parts of left and right ventricle
What are the branches of the left coronary artery?
lateral diagonal branch
Anterior interventricular artery
What is the origin of the AV nodal artery?
Right coronary or circumflex artery
projects superior from intraventricular sulcus
What does the anterior imtraventricular artery supply?
75% of interventricular septum and conducting systems within the ventricles
includes named diagonal branch
What does the circumflex artery supply?
course within left cornary sulcus on posterior aspect of heart
supplies left ventricle via several posterior arteries
What does the marginal artery supply?
the edge of the left ventricle
arise from anterior ventricle artery, circumflex artery or directly from left coronal artery