External heart Flashcards
layers of the heart
endocardium, myocardium pericardium
endocardium:
lines inner heart, vessels, chambers
myocardium:
cardiac muscle
pericardium:
viscerale(inner)+parietele(outer). cavum pericardium fluid filled. serous and fibrous layer
basis cordis
dorso cranial
apex cordis
caudo ventral
2 surfaces
facies auricularis, facies atrialis
facies auricularis:
auricles seen. faces craniolaterally, towards left
facies atrialis:
atriums. faces caudolaterally, towards right
grooves of heart
sulcus coronarius
sulcus interventricularis subsinosous
sulcus interventricularis paraconalis
sulcus coronarius:
separates atria and ventricles
sulcus interventricularis subsinosous
atrial surface, from sulcus coronarius to apex
sulcus paraconalis
facies auricularis, from sulcus coronarius to distal 1/3 of margo cranialis
coronary arteries
a. coronarius sinistra
a. coronarius dextra
a. coronarius sinistra
from left sinus of aortic bulb, passes between left auricle and truncus pulomonalis to sulcus coronarius
a. coronarius sinistra branches
R interventricularis paraconalis (in sulcus interventricularis paraconalis)
r. circumflexus ( around top of heart)
ca, ru, gives r intermedius and r. interventricularis subsinosous
a. coronarius dextra
from right sinus of aortic bulb, between right auricle and truncus pulmonalis to sulcus coronarius
ca, ru, goes to sulcus interventricularis
eq, su, gives r. interventricularis subsinosous
basis cordis gives:
aorta
truncus pulmonalis (deoxy. to lungs)
vena cava cran et caud (to R.A from systemic circ.)
vv. pulomalis (oxy. to L.A)
aorta
ca, su, a. brachiocephalica and a. subclaia sinistra
eq, ru,a. brachiocephalica
position of heart
within mediastinum of thoracic cavity, mostly covered by lungs
between what ribs does the heart sit
3rd to 6th ribs
ca, 7th
what separates it from the thoracic wall
pericardium, mediastinum, pleura
where does the heart extend to
cranially to thymus, (young), caudally to diaphragm
