Slides 9 & 10 Blood Flow Through the 2 Major Circuits Important Points: At the base of the heart are numerous major arteries and veins that carry blood into or out of the heart chambers. Examine the labeled diagram on slide 8 to become familiar with their names. Arteries are vessels that carry blood away from the heart chambers toward the organs and tissues of the body. Veins are vessels that carry blood from the organs and tissues, returning the blood to the heart chambers. PULMONARY CIRCIUT: The pulmonary arteries carry deoxygenated blood (blue) from the right side of the heart to the lungs. The blood becomes oxygenated (red). The pulmonary veins carry the oxygenate blood (red) back to the left side of the heart. SYSTEMIC CIRCUIT: The aorta is the major artery that carries oxygenated blood (red) from the left side of the heart to the organs and tissues of the body. The blood becomes deoxygenated (blue). The superior and inferior vena cava are the major veins that carry the deoxygenated blood (blue) from the organs and tissues back to the right side of the heart. In the pulmonary circuit, deoxygenated blood is pumped from the heart to the lungs, & then oxygenated blood flows back to the heart. 1. Which type of vessels carry oxygenated blood through pulmonary circulation? _ 2. Which type of vessels carry deoxygenated blood through pulmonary circulation? 3. Which major vessels carry deoxygenated blood fromthe heartto the lungs? _ 4. Which major vessels carry oxygenated blood fromthe lungsto the heart? In the systemic circuit, oxygenated blood is pumped from the heart to the body, and then deoxygenated blood flows back to the heart. 1. Which type of vessels carry oxygenated blood through systemic circulation? _ ee _ 2. Which type of vessels carry deoxygenated blood through systemic circulation? 3. Which major vessel carries oxygenated blood fromthe hearttothe body? 4. Which 2 major vessels carry deoxygenated blood from the body to the heart? Slide 11 Sulci Important Points: The sulci are grooves on the surface of the heart (similar to the brain). These grooves contain fat (yellow) and coronary blood vessels that supply the tissue of the heart. They can be seen as depressions on the surface of the heart that mark the boundaries between the chambers. The interventricular sulci are grooves that run between the right and left ventricles. There are two of them, the anterior interventricular sulcus runs between the ventricles on the front of the heart, andthe posterior interventricular sulcus runs between the ventricles on the back of the heart. The sulcus that runs between the atria and ventricles is called the atrioventricular sulcus or coronary sulcus. It circles the heart, seen as a depression separating the upper and lower chambers. Sulci are groves on the surface of the heart. They contain fat and blood vessels 1. Which sulcus is found on the front of the heartbetweenthe ventricles? _ _ 2. Which sulcus is found between the ventricles onthe backof the heart? | 3. Which sulcus separates the 2 atria from the 2 ventricles