Midterm 2- Heart and Valves
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23 terms
Terms | Definitions |
|---|---|
 Where is Heart located at? | Media-stinum |
| Heart covered by what? | Two-layered Pericardium |
| What anchors the heart? | Outer Fibrous Pericardium |
| What lines the heart? | Inner Serous Peri-cardium |
| What lines the inner layer of fibrous pericardium? | Outer Parietal Pericardium |
| What covers the heart? | Inner Visceral Pericardium or Epicardium |
| The Wall of the heart has how many layers and what are they? | 3; Epicardium, Myocardium, Endocardium. |
| Heart has how many chambers? | Four |
| What does Myocardium do? | It is the Cardiac Muscle plus actual contracting layer |
| What does Endocardium do? | Lines the heart chambers |
| What is Septum? | Longituidnal Divider of Heart |
| What does Interatrial Septum has? | Small Depression and Fossa Ovalis |
| What does Interatrial do? | Separate the Atria |
| What allows the Fetal Circulation to bypass Pulmonary Circulation? | Foramen Ovale |
| Sequence of blood flow (Right Atrium)... | Inferior & Superior Vena Cavas to Right Atrium--> Myocardium to Coronary Sinus--> Right Ventricle--> Pulmonary Artery |
| Sequence of blood flow (Left Atrium) | The Four Pulmonary Veins--> Left Atrium--> Left Ventricle--> Aorta |
| The Two blood circulation systems is _____ to the body and ______ to the lungs | systemic; pulmonary |
| Name 2 Heart Valves | Right AV Valve - Tricuspid Valve Left AV Valve - Bicuspid Valve |
| What attaches the flaps of AV valves to the Heart Muscle? | Collagen |
| When the heart is relaxed, AV valves do what? | AV valves are limp and blood flows into atria and then to the ventricles |
| The Valves close when....... | Ventricles contract and blood pushes upwards. |
| Aorta and Pulmonary are guarded by? | Aortic and Pulmonary Semilunar Valves |
| The Valves open when...... | Ventricles contract and the pressure is too strong |
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