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29 Cards in this Set
- Front
- Back
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antibodies |
blood protein produced by B cells in response to specific antigen |
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artery |
blood vessels that carry mostly oxygenated blood away from the heart |
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atrial systole |
the contraction of the left and right atria |
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atroventricular node |
small mass of muscular fibers conducting impulses received from the sinoatrial node to the purkyne tissue |
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Bohr Effect |
decrease in the amount of oxygen associated with hemoglobin in response to lowered pH |
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capillary |
fine blood vessels that branch to form a network between arterioles and venules |
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carbaminohaemoglpobin |
cpmpuond of haemoglobin and co2 and is one of the forms in which co2 exist in the blood |
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carbonic anhydrase |
enzyme that catalyzes the decompostion of carbonic acid into co2 and h2o |
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carboxyhaemoglobin |
coumpind formed in the blood by the binding of carbon monoxide to haemoglobin |
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cardiac cycle |
complete cycle of events in the heart from the beginning of one heart beat to the begining of the next one |
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Double circulation |
combination of pulmonary and systematic circulation of blood present in mammals |
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endothelium (tunica interna) |
inner layer of an artery or vein containing flat, squamous epithelium cells |
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erythrocytes |
term for red blood cells |
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haemoglobin |
molecule comprises four subunits, each containing an iron atom bound to a haem (heme) group |
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haemogobinic acid |
molecule formed when when haemoglobin acts as a buffer combining with hydrogen ions in blood and thereby releasing oxygen |
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leukocytes |
term for white blood cells |
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lymph |
colorless fluid containing white blood cells, which bathes the tissues and drains through the lymphatic system into the bloodstream |
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lymph vessels (lymphatics) |
thin walled, valved structures that carry lymph |
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lymphocyte |
small leukocyte with large round nucleus that destroy microorganisms |
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phagocytes |
leukocyte that destroys invading microorganisms by surrounding and ingesting them. |
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purkyne tissue |
network of fibers that carry the cardiac impulse from the atrioventricular node to the ventricles of the heart and causes them to contract. |
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sinoatrial node |
specialized muscle tissue in the wall of the right atrium of the heart that acts as a pacemaker by produxing a electrical impulse at reg. intervals |
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squamous epithelium |
layer of flattened cells that line blood vessels and other parts of the body. |
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Tissue fluid |
Extracellular liquid that bathes the cells, arriving via capillaries and removed via the lymphatics |
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Tunica externa |
Outer layer of an artery or vein that contains elastic fibers and collagen fibers |
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Tunica media |
Layer of an artery or vein that contains smooth muscle, and elastic and collagen fibers |
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Vein |
Blood vessels carrying, oxygen depleted blood toward the heart |
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Ventricular diastole |
Cardiac period during which the ventricles are relaxing and filling with blood |
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Ventricular systole |
Period of the cardiac cycle when the ventricles of the heart contract pushing blood to the lungs and body. |
