Each slide is shown with additional information to its right. The image can be changed using any combination of the following commands.
Sidebar
Click on links to move to a specific region.
Click on images to show that view.
Use the toolbar to change the magnification and pan the displayed image.
Mouse
Click to zoom-in
Double-click to zoom-out
Alt-click to zoom-out
Alt-double-click to zoom-out to the entire slide
Drag the image to pan
Keyboard
Shift or ‘A’ key to zoom-in
Ctrl or ‘Z’ Key to zoom-out
Arrow Keys to pan across the image
ESC key to zoom-out to the entire slide
Touch
Tap to zoom-in
Double-tap to zoom-out
Alt-tap to zoom-out to the entire slide
Drag the image to pan
SHARE
A link to a virtual slide can be saved for later viewing in different ways.
Clipboard
The address of this view has been copied to your clipboard. This link can be pasted in any other program.
Bookmark
A bookmark link can be created using the bookmark function (Ctrl-D for Windows or Cmd-D for Mac) of your browser. Choose a name for the bookmark and select the folder in which you want it saved.
The right and left atria are on the low pressure side of the heart. The lower workload results in thinner walls than in the ventricles (compare with MH 070 Heart).
Right Atrium - receives venous blood from the systemic circulation. Pectinate muscles (bundles of muscle that protrude from the surface) are common in the right atrium.
The wall of the right atrium is composed of three layers:
Endocardium - inner surface of a simple squamous epithelium (endothelium) supported by a thin layer of dense irregular connective tissue
Myocardium - thickest, middle layer of cardiac muscle responsible for the pumping action of the heart. It also contains blood vessels, nerves and adipose cells
Epicardium - outer surface of mesothelial cells supported by dense irregular connective tissue
Left Atrium - receives oxygenated blood from the lungs.
The wall of left atrium is composed of three layers:
Endocardium - thick in this part of the atrium - has three sublayers:
Endothelium - innermost layer of simple squamous epithelium (endothelium)
Myocardium - thickest, middle layer of the heart wall
Epicardium - outer surface of mesothelial cells (mostly missing on this specimen) supported by dense irregular connective tissue. An inner layer of loose adipose connective tissue is also found in some areas.