![](https://nthumb.tpgimages.com/mid2_ocom_img/c2NpZW5jZV9waG90bw==/20110407_rm/2011040817/top_20110408171721_3361.jpg/TOP07423514.jpg)
Electrocardiogram (ECG) of a normal heart rate, artwork. An ECG measures the electrical activity of the heart. Contractions are caused by electrical signals between the upper (atrial) and lower (ventricular) chambers. The P wave represents the contraction, or depolarisation, of the atria. The QRS wave complex represents the contraction of the venrticles. The T wave represents the repolarisation, or the relaxing, of the ventricles. The wave appears upward or downwards depending upon whether the electrical activity is going towards or away from the area of the body the electrode is placed on.
px | px | dpi | = | cm | x | cm | = | MB |
Details
Creative#:
TOP07423514
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
NO
Property Release:
NO
Right to Privacy:
No
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