The Heart Session 4 Flashcards
what separates the right atrium and ventricle
right atrioventricular sulcus
what does the right atrioventricular sulcus contain and what is its alternative name
right coronary artery
right coronary sulcus
where is the left coronary artery
left atrioventricular/coronary sulcus
what percentage of people have a posterior inter-ventricular branch
90%
what r the branches of the RCA (2)
marginal, posterior interventricular artery
what r the branches of the LCA (5)
LAD, circumflex, obtuse marginal, diagonals, septals
what sulcus (2 names) is the circumflex artery found in what is this between
left coronary/ atrioventricular sulcus
left atria and left ventricle
what major venous structure travels with the circumflex artery and what sulcus is this in
cononary sinus
left coronary sulcus
where does the coronary sinus drain, next to which structure
into right atrium, next to IVC
what r the percentages of posterior interventricular artery origins (3)
90% arises from right coronary
30% arises from left circumflex
20% have both of these= two posterior interventricular artery
what supplies blood to AVN
posterior interventricular artery
what is the crista terminalis, where is it and what does it separate
ridge of modified heart muscle in right atria
separates trabeculated auricle from smooth walled atria
where is the SAN located
in upper half of crista terminalis
what is the musculi pectinati and where is it
small parallel muscular ridges on inner wall of auricular appendage in left and right atria
where is the atrioventricular orifice and what does it mark
smooth-walled of right/left atrium
tricuspid valve on the right and the mitral valve on the left of the heart
where is the fossa ovalis and what does it lie above
in smooth part in right atria
fossa ovalis= above of the IVC
where does the bundle of His run and where is this
septomarginal trabeculum/ moderator band
apex of heart
what is the infundibulum of the heart and what does this lead up to
where trabeculae carnae of ventricle becomes smooth
pulmonary valve
what structure forms most of the base of the heart
left atrium
what enters into the left atrium (4)
4 pulmonary veins
what percentage of people have fossa ovalis
23%
characteristic of the auricular appendage (1)
trabeculated
what structure curves around the pulmonary artery on the left side
left auricular appendage
what is a murmur caused by
blood flowing through a diseased aortic valve
where is the pressure greatest during the systole
within the ventricles
