1. The Heart

3. Exterior Heart A. Brachiocephalic Trunk B. Superior Vena Cava
C. Right Pulmonary Artery
D. Ascending Aorta
E. Pulmonary Trunk
F. Right Pulmonary Veins
G. Right Atrium
H. Right Coronary Artery
I. Anterior Cardiac Vein
J. Right Ventricle
K. Right Marginal Artery
L. Small Cardiac Vein
M. Inferior Vena Cava

4. Exterior Heart N. Left Carotid Artery O. Left Subclavian Artery
P. Aortic Arch
Q. Ligamentum Arteriosum
R. Left Pulmonary Artery
S. Left Pulmonary Veins
T. Left Atrium
U. Circumflex Artery
V. Left Coronary Artery
W. Left Ventricle
X. Great Cardiac Vein
Y. Anterior Interventricular Artery
Z. Apex

5. Interior Heart

6. Interior Heart A. Superior Vena Cava B. Right Pulmonary Artery
C. Pulmonary Trunk
D. Right Atrium
E. Right Pulmonary Veins
F. Fossa Ovalis
G. Pectinate Muscles
H. Tricuspid Valve
I. Right Ventricle
J. Chordae Tendineae
K. Trabeculae Carneae
L. Inferior Vena Cava
M. Aorta

7. Interior Heart N. Left Pulmonary Artery O. Left Atrium
P. Left Pulmonary Veins
Q. Mitral (Bicuspid) Valve
R. Aortic Semilunar Valve
S. Pulmonary Semilunar Valve
T. Left Ventricle
U. Papillary Muscles
V. Interventricular Septum
W. Epicardium
X. Myocardium
Y. Endocardium

8. Draw a diagonal line down the middle starting at the apex
* Draw a diagonal line down the middle starting at the apex. * Label the RIGHT and Left sides
Right Side
Left Side

9. Located
In the center of the thoracic cavity, between the lungs

10. Size
Adults – two fists (put your fists together)

11. Heart Chambers Four Chambers: 2 atria (atrium = singular) on top
G. Right atrium – receives blood from the body
T. Left atrium – receives blood from the Lungs
Left
Right
atria video

12. Heart Chambers Four Chambers: 2 ventricles (on bottom)
J. Right Ventricle– Pumps/Sends blood to the lungs
W. Left Ventricle– Pumps/Sends blood to the
Body
Left
Right

13. Septum
V. Interventricular Septum: Separates the right and left ventricles from one another

14. Valve Functions??? “Cardiac Cycle”

15. AV Valves
4 Valves
2 Atrioventricular (AV) valves (between the atria and ventricles)
Valves prevent blood from flowing backwards

16. Valves Right Atrioventricular (AV) valve
H. Tricuspid – between the right atrium and right ventricle
Prevents backflow into the right atrium
Valves prevent blood from flowing backwards

17. AV Valves
Left Atrioventricular (AV) valves
Q. Bicuspid /mitral valve– between the left atrium and left ventricle
prevents backflow into the left atrium
Mitre= bishops hat
Valves prevent blood from flowing backwards

18. Semilunar Valves
2 semilunar valves
Lunar= moon

19. R. Aortic semilunar valve – between the left ventricle and the aorta
Semilunar Valves
2 semilunar valves
R. Aortic semilunar valve – between the left ventricle and the aorta
- prevents backflow into the left ventricle

20. S. Pulmonary semilunar valve
Semilunar Valves
2 semilunar valves
S. Pulmonary semilunar valve
– between the right ventricle and pulmonary artery
-- Prevents backflow into the right ventricle

21. Valve animations Valves opening and closing
Individual valves opening and closing
Valve Disorders