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8 Cards in this Set
- Front
- Back
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Autonomic Nervous System (ANS)
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Portion of the nervous system that regulates involuntary actions, such as heat rate,digestion, and peristalsis
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Leaflet |
Flat,leaf-shaped structure that comprises the valves of the heart and prevents backflow of blood
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Lumen
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Tubular space or channel within an organ or structure of the body; space within an artery, vein, intestine, or tube
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Regurgitation |
Backflow or ejecting of contents through an opening
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Sphincter |
Circular muscle found in a tubular structure or hallow organ that consticts or dilates to regulate passage of substances through its opening |
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Vasoconstriction |
Narrowing of the lumen of a blood vessel that limits blood flow, usually as a result of diseases, medications, or physiological processes |
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Vasodilation |
Widening of the lumen of a blood vessel caused by relaxing of the muscles of the vascular walls |
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Viscosity
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State of being sticky or gummy
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