Transport in Animals Definitions

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Affinity
A natural attraction; the tendency a molecule of haemoglobin has to bind with oxygen.
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Atrail systole
Contraction of the atria walls. This forces blood into the ventricles through the atrioventricular valves.
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Atrioventricular node
A group of cells in the heart walls, responsible for passing waves of electrical from the sino atrial node to the bundle of His.
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Atrioventricular valves
Valves in the heart linking the atria to the ventricles.
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Bohr effect
Increasing levels of carbon dioxide decrease the affinity of haemoglobin for oxygen. The curve shifts right. More oxygen is released to the actively respiring tissues.
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Bradychardia
The heart is beating too slowly; less than 60 bpm. The ECG peaks are too far apart.
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Other cards in this set

Card 2

Front

Contraction of the atria walls. This forces blood into the ventricles through the atrioventricular valves.

Back

Atrail systole

Card 3

Front

A group of cells in the heart walls, responsible for passing waves of electrical from the sino atrial node to the bundle of His.

Back

Preview of the back of card 3

Card 4

Front

Valves in the heart linking the atria to the ventricles.

Back

Preview of the back of card 4

Card 5

Front

Increasing levels of carbon dioxide decrease the affinity of haemoglobin for oxygen. The curve shifts right. More oxygen is released to the actively respiring tissues.

Back

Preview of the back of card 5
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