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Fetal Heart Physiology: Coloring & Anatomy

Learn about the anatomy and coloring of the fetal heart, including the foramen ovale and ductus arteriosus. Understand the cardiac muscle and heart physiology, including the SA Node and AV Node. Explore blood flow through the heart and body.

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Fetal Heart Physiology: Coloring & Anatomy

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  1. Fetal Heart Heart physiology Heart coloring “There are two types of teachers; the kind that fill you with so much quail shot that you can’t move, and the kind that just gives you a little prod from behind and you jump to the skies.” Robert Frost . Title: Anat & Phys 4/5/07 Class Topics Objectives: Saturday, December 21, 201912:32 AM

  2. Class Assignments What By When • Heart coloring 4/11/07 • Heart coloring W.S. 4/11/07 • Heart test 4/13/07 • Due this class period • Due next class period • Due in the future

  3. Fetal Heart • Foramen ovale • hole between the right and left atrium • Ductus arteriosus • blood vessel between the pulmonary trunk and aorta • Both of the above close when the first breath is taken • change of pressure

  4. Cardiac Muscle • Can beat on its own • If two fibers touch, they beat together • Intercalated discs • Allow for electrical transfer to other cells.

  5. Heart Physiology • Each beat is stimulated by an area in the right atrium near the superior vena cava called the Sinoatrial Node (SA Node). • SA Node is innervated by the autonomic nervous system • Pacemaker of the heart • Stimulates both atria to contract

  6. Heart Physiology • SA Nodesends impulse to the AV (atrioventricular) Node. • Located in the interatrial septum • Holds impulse for a short time (milliseconds) and passes electrical impulse to AV Bundle (Bundles of His) • AV Bundles passes impulse to Purkinje fibers which stimulates the ventricles to contract

  7. FromL http://www.personal.dundee.ac.uk/~jrelliot/HTML1/heart.htm

  8. List of things to color • Right atrium • left atrium • right ventricle • left ventricle • myocardium • epicardium • endocardium • oxygenated vessels • deoxygenated vessels

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  11. Blood flow • Deoxygenated blood enters the heart from the inferior vena cava, superior vena cava, and the coronary sinus • From rt atrium to rt ventricle through the tricuspid valve • From rt ventricle to pulmonary trunk through the pulmonary semilunar valve

  12. Blood flow • From the pulmonary trunk to the rt and left pulmonary arteries to the lungs • Oxygenated blood returns from the lungs in the pulmonary veins to the left atrium • From the left atrium to the left ventricle through the bicuspid valve

  13. Blood flow • From the left ventricle to the aorta through the aortic semilunar valve • From the aorta to the rest of the body • Back to the right atrium through the inferior vena cava, superior vena cava, and coronary sinus

  14. Link • Gateway Community Collegehttp://www.gwc.maricopa.edu/class/bio202/cyberheart/hartint0.htm

  15. From: http://www.cardioliving.com/consumer/Heart/Images/Heart_Anatomy.JPG

  16. From: http://info.med.yale.edu/intmed/cardio/echo_atlas/references/heart_anatomy.html

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