1 / 10

The Heart

The Heart. Membranes. Pericardium Covers the heart Visceral – innermost layer Parietal – outermost layer Pericardial fluid: serous fluid found between visceral & parietal layers reduces friction. Heart Wall. Epicardium (visceral pericardium): outer covering

mcconnellc
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

  2. Membranes • Pericardium • Covers the heart • Visceral – innermost layer • Parietal – outermost layer • Pericardial fluid: serous fluid found between visceral & parietal layers reduces friction

  3. Heart Wall • Epicardium (visceral pericardium): outer covering • Myocardium: cardiac muscle tissue • Endocardium: epithelial & connective tissue; continuous with inner linings of blood vessels attached to heart

  4. Heart Parts

  5. A: Superior Vena Cava B: R. Pulmonary Artery C: R. Pulmonary Vein D: R. Atrium E: Tricuspid Valve F: R. Ventricle G: Inferior Vena Cava H: Myocardium (Septum) I: L. Ventricle J: Bicuspid Valve K: Pulmonary Valve L: L. Atrium M: L. Pulmonary Vein N: Pulmonary Trunk O: Aorta

  6. Chambers • Atria (right & left): thin walls, upper chambers; receive blood returning to the heart • Ventricles (right & left): lower chambers; receive blood from atria, contract to force blood into arteries • Septum: divides heart into right & left sides

  7. Valves • 2 Artioventricular (AV) valves: prevent backflow of blood into atria • Tricuspid valve: between RA & RV • Bicuspid Valve: between LA & LV • Chordae tendineae = fibrous strings that attach from papillary muscles to valve; open valves • Papillary muscles = small mounds of cardiac muscle tissue • Aortic valve: prevents backflow of blood into L ventricle from aorta • Pulmonary Valve: prevents backflow of blood into R ventricle from pulmonary trunk

  8. Essential Blood Vessels • Pulmonary trunk: divides to form R/L pulmonary arteries, which carry blood into lungs from R ventricle • R/L pulmonary veins: carry blood from lungs to L atrium • Aorta: large artery, carries blood away from heart to body

  9. Blood Flow pattern

  10. Khan Academy Video: • https://www.youtube.com/watch?v=7XaftdE_h60 • Fetal Heart https://www.youtube.com/watch?v=cgccQVcFLi4

More Related