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20 Cards in this Set
- Front
- Back
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What is haemoglobin?
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Red pigment that transports O2 in blood
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Where is myoglobin found?
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In muscles
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What is the Bohr shift?
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The change in the shape of the O2 disassociation curve resulting in the release of O2
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What does oxyhaemoglobin do?
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It carries 4 molecules of O2
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What organs does blood flow through in pulmonary circulation?
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Heart -> Lungs -> Heart
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What organs does blood flow though in systematic circulation?
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Heart -> Tissue -> Heart
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Describe arteries
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~ Thick walls
~ Carry blood away from the heart |
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Describe veins
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~ Thin walled
~ Carry blood back to the heat ~ Have friction due to low BP |
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Describe arterioles
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~ Small arteries
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Describe venules
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~ Small veins
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Describe capillaries
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~ Tiny - 1 cell thick
~ Supply nutrients + remove waste |
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The acronym to remember the transport vessels of blood
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Harry And Alice Can Vomit Very Heartily
(Heart, Artery, Arteriole, Capillary, Venule, Vein, Heart |
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What is systolic pressure?
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Pressure of the heart contracting
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What is diastolic pressure?
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Pressure of the relaxed heart
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Arteries have high/ low systolic pressure?
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High
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What happens to the velocity of blood as it moves away from the heart?
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Decreases
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What is Venous Return?
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Where the muscles around the veins contract squeezing it, forcing blood back to the heart
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What is vasoconstriction?
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Reducing blood flow in capillaries by action of sympathetic nerves
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What is vasodilation?
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Increasing blood flow in capillaries
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What is Arterio-Venous O2 Difference? (a-VO2)
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The amount of blood that has O2 removed
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