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Credit
Mechanism of normal heart. Public Domain Mark. Source: Wellcome Collection.
Mechanism of normal heart.
- Date:
- 1930
- Videos
- Online
Available online
About this work
Description
Shows diagrams of heart and sinus-node mechanism, excitation-wave pathway, interpretation of electrocardiagraph. 2 segments.
Publication/Creation
England, 1930.
Physical description
1 encoded moving image (9.26 min.) : silent, black and white
Duration
00:09:26
Copyright note
Copyright previously held by British Medical Association and assigned to Wellcome in 2005
Terms of use
Unrestricted
Public Domain Mark
Creator/production credits
Production details unknown
Notes
The end of this film is missing.
Contents
Segment 1 The heart is shown beating in the chest cavity. Its heart rate is then decreased by stimulating the vagus nerve with an electrode. An illustration shows the parts of the heart, and the intertitles describe what happens when the heart is stimulated electrically. An animation shows the conduction of the electrical pulse through the heart. Time start: 00:00:00:00 Time end: 00:04:43:12 Length: 00:04:43:12
Segment 2 An animation continues to show the electrical pulse being conducted through the heart, and the intertitles describe the areas that it passes through. An animation shows the action of the chambers of the heart during electrical stimulation. A graph with explanatory labels shows the changes in the beating heart. The heart's action and electrocardiographic tracing are shown simultaneously on a diagram. Time start: 00:04:43:12 Time end: 00:09:26:14 Length: 00:04:43:02