Ch 47 Definitions

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Ch 47 Definitions
2
Air sacs found in the lungs
3
alveolus
4
Protein produced by B cells that binds to antigens
5
antibody
6
Substance that stimulates an immune response
7
antigen
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Largest artery in the human body
9
aorta
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Branch of an artery that gives rise to capillaries
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arteriole
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Vessel that carries blood away from the heart
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artery
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Anterior chamber of the heart
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atrium
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Small tube that branches from the bronchi within
the lungs
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bronchiole
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Branch of the trachea that enter the lungs
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bronchus
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Smallest vessel in the blood vessel network
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capillary
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Pressure maintained in the blood when the
ventricles are relaxed
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diastolic
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Flap of tissue that covers the trachea
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epiglottis
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Red blood cell
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erythrocyte
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Long, sticky threads that function in blood
clotting
29
fibrin
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Oxygen-carrying pigment in red blood cells
31
hemoglobin
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Large vein carrying blood from the lower part of
the body
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inferior vena cava
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Voice box that houses the vocal cords
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larynx
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White blood cell
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leukocyte
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Cell that engages in phagocytosis
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phagocyte
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Partial cell needed to form blood clots
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platelet
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Artery that carries deoxygenated blood from the
heart to the lungs.
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pulmonary
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Nerve tissue in the right atrium that regulates
the contraction rate of the heart.
45
sinoatrial node
46
Pressure of the blood when the ventricles
contract
47
systolic
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Tube that connects the pharynx to the lungs
49
trachea
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Vessel carrying blood to the heart
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vein
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Lower, and the most muscular, chamber of the
heart
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ventricle
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Small vessel in the network of veins
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venule
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end