CHAPTER 21 heart anatomy Flashcards
where does the heart extend vertically
L. 2nd to 5th intercostal spaces
where does the heart extend horizontally
r edge sternum to l mcl
heart’s position
inverted cone
a chest area that overlies the heart and great vessels
precordium
these are large veins and arteries leading directly to and away from heart
great vessels
what separates the R and L sides of the heart
septum
tenderlike structures that play a role in the atrioventricular valves
chordae tendinae
what part of the heart opens during ventricular contraction
semilunar valves
tough fibroserous sac attaching to great vessels and surrounds heart
pericardium
a serous membrane lining secreting small amount of pericardial fluid
parietal pericardium
muscles that covers outer surface of the heart
epicardium
thickest layer of muscle covering the heart made out of contractile cardiac muscle
myocardium
thin layer of endothelial tissue; innermost layer has blood vessels
endocardium
during which phase does the emptying and contraction of ventricles occur
systole
during which phase does the filling ; relaxation of ventricle occur
diastole