The Human HeartThe Human Heart

Parts of the Internal Parts of the Internal HeartHeart

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Pulmonary ValvePulmonary Valve

Keeps blood from flowing back Keeps blood from flowing back into the right ventricleinto the right ventricle

Bicuspid ValveBicuspid Valve

Prevents blood from flowing Prevents blood from flowing back into the left atriumback into the left atrium

Also called the Mitral valveAlso called the Mitral valve

Left AtriumLeft Atrium

Receives oxygen rich blood from Receives oxygen rich blood from the pulmonary veinsthe pulmonary veins

Pulmonary TrunkPulmonary Trunk

Transfers blood through the Transfers blood through the pulmonary arteries to the lungspulmonary arteries to the lungs

Aortic ValveAortic Valve

Prevents blood from going back Prevents blood from going back into the left ventricleinto the left ventricle

Tricuspid ValveTricuspid Valve

Prevents backflow of blood to Prevents backflow of blood to the right atriumthe right atrium

3 cusps3 cusps

AortaAorta

Blood flows from the aorta Blood flows from the aorta throughout the entire bodythroughout the entire body

Largest vessel in the bodyLargest vessel in the body

Left VentricleLeft Ventricle

Pumping chamber which forces Pumping chamber which forces blood through the aortic valveblood through the aortic valve

More muscular than the right More muscular than the right ventricleventricle

Right AtriumRight Atrium

Collecting chamberCollecting chamber Blood is forced to the right Blood is forced to the right ventricleventricle

Interventricular SeptumInterventricular Septum

Separates the pumping chambers Separates the pumping chambers of the heart of the heart

Superior Vena CavaSuperior Vena Cava

Blood from the SVC & IVC is Blood from the SVC & IVC is released into the right atriumreleased into the right atrium

Path of Blood FlowPath 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., superior vena cava

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 VentricleRight Ventricle

Receives blood from the Receives blood from the superior and inferior vena cavasuperior and inferior vena cava

Path of Blood Flow: Path of Blood Flow: Answer SheetAnswer Sheet

1.1. Superior Vena CavaSuperior Vena Cava2.2. Right AtriumRight Atrium3.3. Tricuspid ValveTricuspid Valve4.4. Right VentricleRight Ventricle5.5. Pulmonary ValvePulmonary Valve6.6. Pulmonary TrunkPulmonary Trunk7.7. Pulmonary ArteriesPulmonary Arteries8.8. LungsLungs9.9. Pulmonary VeinsPulmonary Veins10.10. Left AtriumLeft Atrium11.11. Bicuspid Valve/Mitral Bicuspid Valve/Mitral

valvevalve12.12. Left VentricleLeft Ventricle13.13. Aortic ValveAortic Valve14.14. AortaAorta15.15. Body TissueBody Tissue