Heart

STRUCTURES TO KNOW ON THE SHEEP HEART A. myocardium B. endocardium C. visceral pericardium   1. apex 2. interventricular septum (IV septum) 3. left ventricle 4. right ventricle 5. right atrium 6. left atrium 7. papillary muscles 8. chordae tendinae 9. tricuspid valve 10. mitral valve (bicuspid valve) 11. trabeculae carneae 12. aorta 13. aortic semilunar valve

What LAYER of tissue is this? Endocardium (inside all chambers where blood touches) Myocardium (meaty areas of brown muscle Visceral pericardium (outer shiny surface of heart) Apex

What CHAMBER is this? Right atrium What CHAMBER is this? Left atrium What CHAMBER is this? Right ventricle What CHAMBER is this? Left ventricle Apex

Pulmonary artery Aorta Superior vena cava

Aortic semilunar valve Mitral (bicuspid) valve chordae tendineae Papillary muscles trabeculae carneae

Atrial septum Right atrium Left atrium Tricuspid valve Mitral (bicuspid) valve Left ventricle Right ventricle Apex Interventricular septum Apex

STRUCTURES TO KNOW ON THE HUMAN HEART A. myocardium B. endocardium C. visceral pericardium D. pulmonary trunk E. pulmonary veins (there are four) F. pulmonary arteries G. right coronary artery H. left coronary artery I. Circumflex artery J. posterior interventricular artery K. anterior interventricular artery L. Right brachiocephalic M. Right subclavian N. Right common carotid O. Left common carotid P. Left subclavian

Endoocardium Myocardium Visceral pericardium (outer shiny surface)

STRUCTURES TO KNOW ON THE HUMAN HEART 1. apex 2. Interventricular septum (IV septum) 3. left ventricle 4. right ventricle 5. right atrium 6. left atrium 7. atrial septum 8. chordae tendinae 9. papillary muscles 10. mitral valve (bicuspid valve) 11. tricuspid valve 12. pulmonary semilunar valve 13. aortic semilunar valve 14. aorta 15. superior vena cava 16. inferior vena cava 17. trabeculae carneae

Superior vena cavae L. Pulmonary artery Aorta Pulmonary trunk Right Atrium Left Atrium Auricle (ear shaped) Left coronary artery Right coronary artery Apex

Posterior view of heart Trachea Superior vena cavae Aorta Pulmonary veins Pulmonary veins Left Atrium Right Atrium Coronary sinus Inferior vena cavae Posterior interventricular artery

Auricle Apex Right atrium

Coronary sinus

Pulmonary semilunar valve

Pulmonary trunk Pulmonary semilunar valve Aortic semilunar valve

Auricle Left Atrium Right Atrium Atrial septum Anterior interventricular artery Interventricular septum Right Ventricle Left Ventricle

Pulmonary semilunar valve Mitral (bicuspid) valve Aortic semilunar valve (look deep under here) Tricuspid valve chordae tendineae Papillary muscles trabeculae carneae

Pulmonary semilunar valve Look up here to see aortic semilunar valve

Pulmonary veins R. Coronary artery L. Coronary artery Anterior interventricular artery Circumflex artery

Left common carotid artery R. common carotid artery R. subclavian artery R. Brachiocephalic artery Left subclavian artery Aorta Superior vena cava Pulmonary trunk L. Pulmonary artery

Trachea Esophagus Inferior vena cava

Fetal Circulation

FETAL CIRCULATION Umbilical vein carries oxygenated blood from the placenta; it is the VESSEL where blood is most highly oxygenated. Right atrium is the CHAMBER where blood is most highly oxygenated Foramen ovale is the hole between the fetal atria Ductus arteriosus is the connection between the pulmonary artery and the aorta

Fetal Circulation