{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

ch_18_lecture_outline_a - 18 The Cardiovascular System The...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
18 The Cardiovascular System: The Heart: Part A Heart Anatomy 0. Approximately the size of a fist 1. Location 0. In the mediastinum between second rib and fifth intercostal space 1. On the superior surface of diaphragm 2. Two-thirds to the left of the midsternal line 3. Anterior to the vertebral column, posterior to the sternum 2. Enclosed in pericardium, a double-walled sac Pericardium 0. Superficial fibrous pericardium 0. Protects, anchors, and prevents overfilling Pericardium 1. Deep two-layered serous pericardium 1. Parietal layer lines the internal surface of the fibrous pericardium 2. Visceral layer (epicardium) on external surface of the heart 3. Separated by fluid-filled pericardial cavity (decreases friction) Layers of the Heart Wall 0. Epicardium—visceral layer of the serous pericardium Layers of the Heart Wall 0. Myocardium 4. Spiral bundles of cardiac muscle cells 5. Fibrous skeleton of the heart: crisscrossing, interlacing layer of connective tissue 6. Anchors cardiac muscle fibers 7. Supports great vessels and valves 8. Limits spread of action potentials to specific paths
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Layers of the Heart Wall 0. Endocardium is continuous with endothelial lining of blood vessels Chambers 2.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern