BSC2086 - 3.5 Internal Heart Anatomy

valve with 3 cusps

RAV, pulmonary, and aortic valves

moderator band

cardiac tissue that will have an important role in cardiac electrical conduction on right ventricle only

papillary muscles

cone-shaped muscular projections of the inner ventricular surface

valve with 2 cusps

left atrioventricular valve only

interatrial septum

muscle tissue that separates the atria

interventricular septum

muscle tissue that separates the ventricles

opening of the coronary sinus

opening where the blood coming from the coronary sinus will empty into the right atrium

fossa ovalis

oval depression reminiscent of opening during embryonic development on the right atrium

foramen ovale

permits backflow of blood from right atrium into left atrium during embryonic development on the right and left atria

mitral valve

prevents backflow of blood into the left atrium

aortic valve

prevents backflow of blood into the left ventricle

tricuspid valve

prevents backflow of blood into the right atrium

pulmonary valve

prevents backflow of blood into the right ventricle

papillary muscles location

right and left ventricles

opening of the coronary sinus location

right atrium

pectinate muscles location

right atrium

chordae tendineae

string-like collagen fibers that attach to the atrioventricular valves on right and left ventricles