Biology Transport in Heart + Body

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Atrioventricular Node (AVN)
Patch of tissue in septum of heart that conducts electrical stimulus from atria to Purkyne fibres
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Bohr Shift/Effect
Effect of CO2 concentration on the affinity of haemoglobin for oxygen
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Molecule resulting from combination of CO2 and haemoglobin
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Cardiac Cycle
Sequence of events making up one heartbeat
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Cardiac Muscle
Muscle found in the heart that has its own intrinsic heartbeat
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Flexible and elastic connective tissue
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Cartilage Ring
Flexible ring that hold airways open
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Chloride Shift
Movement of chloride ions into red blood cells to balance loss of hydrogen carbonate ions
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Coronary Arteries
Arteries that carry blood to the heart muscle
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Sheet of muscular and fibrous tissue separating the chest cavity from abdominal cavity
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Period when heart muscle in the ventricles is relaxing and blood pressure is lowest
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To make wider e.g. lumen
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Breakdown of a molecule into two molecules
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Dissociation Curve
The curve on a graph showing proportion of haemoglobin that is saturated with oxygen at different oxygen tensions
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Elastic Fibres
Long fibres of protein elastin that have the ability to stretch and recoil
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Trace showing electrical activity of the heart muscle during a cycle
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State in which the chambers in the heart contract out of rhythm
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Haemoglobinic Acid
Acid produced when haemoglobin takes up hydrogen ions
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Central cavities in blood vessels
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Lymphatic System
System of lymph nodes and lacteals with lymph fluid
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Respiratory protein with a higher affinity for oxygen than haemoglobin
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Describes heart muscle that generates its own contractions
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Partial Pressure
Proportion of total pressure provided by a particular gas as part of mixture of gases
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Pulmonary Circulation
Circulation of blood through lungs
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Pulmonary Vein
Vein carrying oxygenated blood from lungs to left atrium of heart
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Purkyne Tissue
Specialised tissue in septum of the heart that conducts the electrical stimulus from sinonatrial node to ventricles
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Semilunar valves
Valves between ventricles and main arteries leading out of the heart, preventing back flow of blood
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Wall separating ventricles of the heart
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Sinoatrial Node (SAN)
Patch of tissue that initiates heartbeat by sending waves of excitation over atria
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Smooth Muscle
Type of involuntary muscle found in certain internal organs
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Systemic Circulation
Carries blod around the body, excluding circulation to the lungs
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Tendinous Cords
String-like tendons used to attach the atrioventricular valves of the heart to the sides of the ventricle wall
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Vena Cava
Two large veins that carry deoxygenated blood from the body back to the heart
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Movement of diaphragm and rib cage that bring air into and out of the lungs
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Other cards in this set

Card 2


Bohr Shift/Effect


Effect of CO2 concentration on the affinity of haemoglobin for oxygen

Card 3




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Card 4


Cardiac Cycle


Preview of the front of card 4

Card 5


Cardiac Muscle


Preview of the front of card 5
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