The heartbeat is initated within the muscle cells themselves, and not dependent on nervous or hormonal stimulation
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Sino-atrial node (SAN)
An area of the heart muscle in the right atrium that initates a wave of electrical excitation across the atria
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Atrio-ventricular node (AVN)
The only conducting area of tissue in the wall of the heart between the atria and ventricles, through which electrical excitation passes from the atria to conducting tissue in the walls of the ventricles
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Affinity
The degree to which two molecules are attached to each other
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Cooperative binding
The increasing ease with which haemoglobin binds its second and third oxygen molecules, as the conformation of the haemoglobin molecule changes
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Other cards in this set
Card 2
Front
An area of the heart muscle in the right atrium that initates a wave of electrical excitation across the atria
Back
Sino-atrial node (SAN)
Card 3
Front
The only conducting area of tissue in the wall of the heart between the atria and ventricles, through which electrical excitation passes from the atria to conducting tissue in the walls of the ventricles
Back
Card 4
Front
The degree to which two molecules are attached to each other
Back
Card 5
Front
The increasing ease with which haemoglobin binds its second and third oxygen molecules, as the conformation of the haemoglobin molecule changes
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