The Need for Co-ordination
{"Image DocumentName": "The Need for Co-ordination", "Image ImageDescription": "Heart (cardiac) muscle is unusual as it can initiate it\u2019s own contraction. This is known as myogenic. The muscles can contract and relax rythmically even if it\u2019s not connected to the body. The muscles of the atria and ventricles have their own natural frequency of contraction- the atrial muscle has a higher frequency (number of contractions) than the ventricular muscle. The property of the muscle could cause inefficient pumping (fibrillation) if the contractions are not synchronised- so the heart needs a mechanism for control.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}