The Human Heart

Parts of the Internal Heart

Pulmonary Valve Keeps blood from flowing back into the right ventricle Keeps blood from flowing back into the right ventricle

Bicuspid Valve Prevents blood from flowing back into the left atrium Prevents blood from flowing back into the left atrium Also called the Mitral valve Also called the Mitral valve

Left Atrium Receives oxygen rich blood from the pulmonary veins Receives oxygen rich blood from the pulmonary veins

Pulmonary Trunk Transfers blood through the pulmonary arteries to the lungs Transfers blood through the pulmonary arteries to the lungs

Aortic Valve Prevents blood from going back into the left ventricle

Tricuspid Valve Prevents backflow of blood to the right atrium Prevents backflow of blood to the right atrium 3 cusps 3 cusps

Aorta Blood flows from the aorta throughout the entire body Blood flows from the aorta throughout the entire body Largest vessel in the body Largest vessel in the body

Left Ventricle Pumping chamber which forces blood through the aortic valve Pumping chamber which forces blood through the aortic valve More muscular than the right ventricle More muscular than the right ventricle

Right Atrium Collecting chamber Collecting chamber Blood is forced to the right ventricle Blood is forced to the right ventricle

Interventricular Septum Separates the pumping chambers of the heart Separates the pumping chambers of the heart

Superior Vena Cava Blood from the SVC & IVC is released into the right atrium Blood from the SVC & IVC is released into the right atrium

Path of Blood Flow Place the following items in the correct sequence: body tissue, aorta, bicuspid valve, left atrium, lungs, pulmonary trunk, pulmonary arteries, left ventricle, pulmonary veins, right atrium, right ventricle, tricuspid valve, aortic valve, pulmonary valve. Oxygen poor blood is collected from the inferior and ___________ _______ ________. It is released into the _________ _______ where it moves through the _________ valve into the ________ __________. When the right ventricle contracts, blood is forced through the _________ valve into the ____________ _______ which splits into the left & right pulmonary __________. Blood is taken via the arteries to the _____ where oxygen & carbon dioxide diffuse through the simple squamous tissue. Oxygen-rich blood then returns to the heart via the ___________ ________ which empty into the _________ ________. Once the atrium contracts, the blood passes through the __________ ________ into the _________ _________. Once the ventricle contracts blood is forced through the _________ valve and out of the _________ to travel to the _______ ________.

Right Ventricle Receives blood from the superior and inferior vena cava Receives blood from the superior and inferior vena cava

Path of Blood Flow: Answer Sheet 1. Superior Vena Cava 2. Right Atrium 3. Tricuspid Valve 4. Right Ventricle 5. Pulmonary Valve 6. Pulmonary Trunk 7. Pulmonary Arteries 8. Lungs 9. Pulmonary Veins 10. Left Atrium 11. Bicuspid Valve/Mitral valve 12. Left Ventricle 13. Aortic Valve 14. Aorta 15. Body Tissue