one in which the blood flows through the heart twice for each circuit of the body
double circulatory system
1 of 36
one in which the blood flows through the heart once for each circuit of the body
single circulatory system
2 of 36
the movement of substances such as oxygen, nutrients, hormones, waste and heat around the body
transport
3 of 36
vessels that carry blood away from the heart
artery
4 of 36
small blood vessels that distribute blood from the arteries to the capillaries
arterioles
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very small blood vessels with very thin walls
capillaries
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one in which the blood is held in vessels
closed circulatory system
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one in which the blood isn't held in vessels
open circulatory system
8 of 36
vessels that carry blood back to the heart
veins
9 of 36
small blood vessels that collect blood from the capillaries and lead into the veins
venules
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the fluid used to transport materials around the body
blood
11 of 36
the pressure that a fluid exerts when pushing against the sides of a vessel or container
hydrostatic pressure
12 of 36
the fluid held in the lymphatic system, which is a system of tubes that return excess tissue fluid to the blood system
lymph
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the pressure created by the osmotic effect of the solutes
oncotic pressure
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the fluid portion of the blood
plasma
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the fluid surrounding the cells and tissues
tissue fluid
16 of 36
valves between the atria and ventricles, that ensures blood travels in the correct direction
atrioventricular valves
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specialised muscle found in the walls of the heart chambers
cardiac muscle
18 of 36
valves that prevent blood re-entering the heart from the arteries
semilunar valves
19 of 36
the sequence of events in one full beat of the heart
cardiac cycle
20 of 36
a slow heart rhythm
bradycardia
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an extra or early beat of the ventricles
ectopic heartbeat
22 of 36
a trace that record the electrical activity of the heart
electrocardiogram
23 of 36
uncoordinated contraction of the atria and ventricles
fibrillation
24 of 36
muscle that can initiate it own contraction
myogenic muscle
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consists of specially adapted muscle fibres that conduct the wave of expiration from the AVN down the septum to the ventricles
purkyne tissue
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the hearts pacemaker. it is a small patch of tissue that sends out waves of electrical excitation at regular intervals in order to initiate contractions
sino-atrial node
27 of 36
a rapid heart rhythm
tachycardia
28 of 36
a strong attraction
affinity
29 of 36
means releasing the oxygen from the oxyhemoglobin
dissociation
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the type of haemoglobin usually fund only in the foetus
fetal haemoglobin
31 of 36
the red pigment used to transport oxygen in blood
haemoglobin
32 of 36
the enzyme that catalyses the combination of carbon dioxide and water
carbonic anhydrase
33 of 36
the movement of chloride ions into the erythrocytes to balance the charge as hydrogen carbonate ions leave the cell
chloride shift
34 of 36
the effect that extra dioxide has on the haemoglobin, explaining the release of more oxygen
Bohr effect
35 of 36
the compound formed by the buffering action of haemoglobin as it combines with excess hydrogen ions
haemoglobonic acid
36 of 36
Other cards in this set
Card 2
Front
one in which the blood flows through the heart once for each circuit of the body
Back
single circulatory system
Card 3
Front
the movement of substances such as oxygen, nutrients, hormones, waste and heat around the body
Back
Card 4
Front
vessels that carry blood away from the heart
Back
Card 5
Front
small blood vessels that distribute blood from the arteries to the capillaries
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