sheep heart

Sheep Heart

Left AuricleLeft Auricle

Anterior Anterior longitudinal longitudinal sulcussulcus

You can find the anterior side of the heart by finding the auricle that you can see completely; it is the left auricle. The anterior longitudinal sulcus is on that side and the coronary sinus is on the posterior side.

Apex

Myocardium (meaty areas of brown muscle

Endocardium (inside all chambers where blood touches)

Visceral pericardium (outer shiny surface of heart)

What LAYER of tissue is this?

Apex

What CHAMBER is this? Right ventricle

What CHAMBER is this? Right atrium

What CHAMBER is this? Left atrium

What CHAMBER is this? Left ventricle

Apex

Atrial septum

Right atrium

Interventricular Interventricular septumseptum

Left atrium

Right ventricle

Left ventricle

Mitral (bicuspid) valve

Apex

Tricuspid valve

Mitral Mitral (bicuspid) (bicuspid) valvevalve

Cordae Cordae tendonaetendonae

Papillary Papillary musclesmuscles

Aortic Aortic semilunar semilunar

valvevalve

Trabeculae Trabeculae carnaecarnae

Mitral Mitral (bicuspid) (bicuspid) valvevalve

Cordae Cordae tendonaetendonae

Papillary Papillary musclemuscle

Aortic semilunar Aortic semilunar valvevalve

Trabeculae Trabeculae carnaecarnae

Mitral (bicuspid) valve

Papillary Papillary musclemuscle

Mitral (bicuspid) valve

Tricuspid valve

Apex

Atrial septum

Right atrium

Interventricular Interventricular septumseptum

Left atrium

Right ventricle

Left ventricle

Mitral (bicuspid) valve

Apex

Tricuspid valve

Aorta

Superior vena cava

Pulmonary trunk

Aortic semilunar Aortic semilunar valvevalve

AortaAorta

Pulmonary trunk, which Pulmonary trunk, which branches into pulmonary branches into pulmonary arteriesarteries

Pulmonary veins enter Left Pulmonary veins enter Left atriumatrium

AortaAorta

Pulmonary veinPulmonary vein

Superior vena cavaSuperior vena cava

Inferior Inferior vena cavavena cava

Pulmonary Pulmonary arteryartery

(leaving right (leaving right ventricle)ventricle)

Pulmonary Pulmonary artery as seen artery as seen from back of from back of

heartheart

(leaving right (leaving right ventricle)ventricle)

Coronary sinus Coronary sinus (back of heart)(back of heart)

Moderator band Moderator band (right ventricle (right ventricle

only)only)

Moderator bandModerator band

Inferior View of the Heart

Figure 18.5d20

Posterior view of heart

Superior vena cavae

Inferior vena cavae

Trachea

Aorta

Right Atrium

Left Atrium

Pulmonary veins

Pulmonary veins

Posterior interventricular artery

Coronary sinus

Coronary Sinus (back vein of heart)

Coronary Sinus (back vein of heart)

Pectinate Muscles are parallel ridges in the walls of the atria of the heart. They resemble the teeth of the comb.

Ascending Aorta

Marginal arteries

Pulmonary semilunar valve

Papillary muscles

Cordae tendonae

Trabeculae carnae

Mitral (bicuspid) valve

Tricuspid valveAortic semilunar valve (look deep under here)

R. Coronary artery

Pulmonary veins

L. Coronary artery

Anterior interventricular artery

Circumflex artery

Pulmonary trunk

Aorta

Pulmonary trunk

Left subclavian artery

Left common carotid artery

R. Brachiocephalic artery

R. common carotid artery

L. Pulmonary artery

R. subclavian artery

Superior vena cava