1 / 14

The Heart

The Heart. http://www.annerpino.com/2003/heart.jpg. Heart Anatomy. Heart Anatomy. Bicuspid / Mitral Valve. Pulmonary Artery / Trunk. Pulmonary Vein. Left Atrium. Left Ventricle. Aortic Valve. Aorta. Superior Vena Cava. Inferior Vena Cava. Pulmonary Valve. Tricuspid Valve.

storm
Télécharger la présentation

The Heart

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Heart http://www.annerpino.com/2003/heart.jpg

  2. Heart Anatomy

  3. Heart Anatomy Bicuspid / Mitral Valve Pulmonary Artery / Trunk Pulmonary Vein Left Atrium Left Ventricle Aortic Valve Aorta Superior Vena Cava Inferior Vena Cava Pulmonary Valve Tricuspid Valve Right Ventricle Right Atrium

  4. Time to cut open a heart!!!

  5. Blood Pressure Diastole: • When atria are relaxed (i.e. filled with blood) Systole: • Atria push blood into ventricles • Ventricles contract and push blood into arteries • When AV valves shut – LUBB • Ventricles relax – DUBB Written as: DIASTOLIC pressure (mm Hg) SYSTOLIC pressure (mm Hg)

  6. How do we take Blood Pressure? • Need to use a stethoscope • Normal systolic should be 120 mm Hg • Normal diastole should be 80 mm Hg To measure: • Tighten the cuff…as soon as you release you should hear a lubb sound – measure pressure (systolic – should be 120 mm Hg) • Then deflate until sound disappears – check pressure (diastole – should be 80mm Hg) Sphygmomanometer

  7. Heart Valves • 4 valves ensure that blood • flows in the proper direction • 1) Tricuspid (“right atrioventricular/AV-valve”) • - b/w RA & RV • 2) Bicuspid/Mitral (“left AV-valve”) • – b/w LA & LV • Pulmonary semilunar valve • - b/w RV & pulmonary trunk • Aortic semilunar valve • - b/w LV & aorta • http://www.nhlbi.nih.gov/health/dci/Diseases/hhw/hhw_electrical.html ** CHORDAE TENDINAE (“heart strings”) - Fibrous connective tissue inside ventricles that stabilize the AV valves

  8. Coronary Circulation • supply oxygenated, nutrient-rich blood to the muscles of the heart (cardiac muscle) • disease of this “mini-circulatory system” will lead to death of heart tissue • unfortunately, cardiac muscle is not able to regenerate • if too much tissue dies, the heart cannot pump effectively = heart attack

More Related