the heartbeat is initiated in the muscle cells themselves, and not dependent on nervous or hormonal stimulation
myogenic contraction
1 of 6
an area of the heart muscle in the right atrium that initiates a wave of electrical excitation across the atria, to generate contraction of the heart muscle. It is also known as the pacemaker
sino-atrial node
2 of 6
the only conducting tissue in the wall of the heart between the atria and ventricles, through which electrical excitation passes from the atria to the conducting tissue in the ventricles
atrio-ventricular node
3 of 6
the degree to which two molecules are attracted to eachother
affinity
4 of 6
the increasing ease with which haemoglobin binds its second and third oxygen molecules, as the conformation of the haemoglobin molecule changes
cooperative binding
5 of 6
the movement of the oxygen dissociation curve to the right at a higher partial pressure of carbon dioxide, because at a given oxygen partial pressure, haemoglobin has a lower affinity for oxygen
bohr effect
6 of 6
Other cards in this set
Card 2
Front
an area of the heart muscle in the right atrium that initiates a wave of electrical excitation across the atria, to generate contraction of the heart muscle. It is also known as the pacemaker
Back
sino-atrial node
Card 3
Front
the only conducting tissue in the wall of the heart between the atria and ventricles, through which electrical excitation passes from the atria to the conducting tissue in the ventricles
Back
Card 4
Front
the degree to which two molecules are attracted to eachother
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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