Pig Heart Dissection

3. muscular wall between the right and left ventricles.
4. heart relaxation phase
5. atrioventricular valve between the right atrium and right ventricle.
8. valve between the aorta and left ventricle, and between the pulmonary trunk and right ventricle.
9. thick layer of the heart made of cardiac muscle
11. any blood vessel that returns blood to the heart.
12. large vein that returns blood from the lower body regions to the right atrium.
14. branch of the aorta which splits apart to form the right subclavian artery and right common carotid artery.
17. large artery that emerges from the left ventricle; carries blood to the systemic circuit. Apex - pointed end of the heart consisting of muscle from the left ventricle.
18. one of the two upper chambers of the heart which receive blood.
19. one of the two lower chambers of the heart which force blood into either the aorta or the pulmonary arteries.

1. blood vessel that return oxygenated blood from the lungs to the atrium
2. large vein that returns blood from the upper regions of the body to the right atrium. Trabeculae carneae - ridges and folds on the walls of the ventricles.
3. heart contraction phase
6. ear-like flap made up of muscle from the atria.
7. blood vessel that carries blood to the lungs to receive oxygen
10. membrane around the heart
13. atrioventricular valve between the left atrium and ventricle; also called the mitral valve.
15. artery leading from the aorta that supplies blood to the heart muscle.
16. any blood vessel that carries blood away from the heart.
18. the tip of the heart