Jeffco Bio212 LAB Exam 1: Anatomy of the Heart
About this set
Created by:
gcloning on February 8, 2012
Subjects:
Jeffco Bio212 LAB Exam 1, Gross anatomy of the human heart, Pulmonary Systemic and Caridac Circulations, Sheep heart dissection
Description:
Spring 2012, Instructor = Mrs. Marialana Speidel; from Review Sheet assigned in lab the week of Thurs.01-12-12
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17 terms
Terms | Definitions |
|---|---|
 fluid that fills the pericardial sac | allows the heart to beat in a relatively frictionless environment |
| epicardium | visceral pericardium |
| myocardium | cardiac muscle |
| endocardium | inner lining of the heart chambers |
| valves found in the heart | enforce one-way blood flow through the heart chambers by preventing back flow |
| chordae tendineae | anchor the cusps of the tri- and bicuspid (AV) valves to the ventricular walls |
| pulmonary circulation | gets O2 into the blood |
| systemic circulation | distributes O2 to all the body tissues for the cells to use |
| mitral valve | if it does not close properly, systemic circulation will be affected |
| anterior descending branch of the left coronary artery | a blood clot (thrombus) here will cause death because blood flow to the left ventricle would be blocked, therefore cells responsible for the pumping of blood would die |
| cardiac muscle | is arranged in spirals and figure-8-shaped bundles so that the heart can contract as a unit |
| left ventricle | is larger and thicker-walled than the other ventricle; has to produce more blood pressure because it pumps blood throughout the body (systemic circulation) |
| right ventricle | only has to pump blood to the lungs (pulmonary circulation) |
| semilunar valves | prevent backflow into the ventricles |
| AV (atrioventricular) valves | prevent backflow into the atria |
| ductus arteriosus | fetal structure located between the pulmonary trunk and the aorta which allows blood to pass directly from from the pulmonary trunk to the aorta, bypassing the fetal lungs; after first breath, closes to become the ligamentum arteriosum |
| foramen ovale | fetal structure which is an opening through the interatrial septum, connecting the two atria; after first breath, closes to become the fossa ovalis |
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