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Flashcards in Heart Deck (24):
1

layers of the heart

myocardium
epicardium
endocardium

2

myocardium

muscle layer of the heart

3

epicardium

serous pericardium covering the external surface of the heart

4

endocardium

lining of the heart chambers
similar to and continuous with the tunica intima of the blood vessels

5

diaphragmatic surface of the heart

inferior surface that rests on the diaphragm
mostly left ventricle

6

atrioventricular/coronary sulcus

groove around the heart that separates the upper atria from the lower ventricles

7

posterior interventricular suclus

groove that separates the ventricles on the diaphragmatic surface

8

anterior interventricular surcafe

groove that separates the ventricles on the anterior surface

9

sinus venarum of right atrium

smooth wall part of atrium

10

pectinate muscles of right atrium

ridges in atrium that contract for pumping action of chamber

11

crista terminalis in right atrium

ridge that separates sinus venarum and pectinate muscles

12

conus arteriosus

opening of right ventricles to pulmonary trunk

13

path of right coronary artery

arises from right aortic sinus
travels in the anterior aspect of the atrioventricular sulcus to the posterior region of the heart

14

branches of right coronary artery

anterior atrial
sinuatrial nodal artery
atrioventricular nodal artery
right marginal artery
posterior interventricular artery

15

path of left coronary artery

arises from left aortic sinus
almost immediately splits into 2 branches that travel in the interventricular sulcus and posteriorly in the atrioventricular sulcus, respectively

16

branches of left coronary artery

anterior interventricular artery
circulflex artery
left marginal artery

17

blood supply for wall of right atrium

anterior atrial artery

18

blood supply for right atrium and SA node

sinuatrial nodal artery

19

blood supply for right atrium, right ventricle, and AV node

atrioventricular nodal artery

20

blood supply for wall of right ventricle

right marginal artery

21

blood supply for right and left ventricles

posterior interventricular artery
anterior interventricular artery

22

blood supply for wall of left ventricle

left marginal artery

23

sympathetic innervation of the heart

superior, middle, and inferior cardiac nerves (from cervical sympathetic ganglion)

24

parasympathetic innervation of heart

vagus nerve