Term
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Definition
| ability to feel the pressure in the arteries during ventricular contraction |
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Term
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Definition
| force of blood against the inner walls of the blood vessels anywhere in the cardiovascular system |
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Term
| 3 reasons for high blood pressure |
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Definition
| atherosclerosis, stress, activity |
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Term
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Definition
| lead from capillaries and merge to form veins that return blood to the heart |
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Term
| differences between arteries and veins |
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Definition
| veins- tunica media is much thinner (one layer) larger lumen, have valves |
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Term
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Definition
tunica intima (innermost layer) smooth for blood to flow through
tunica media (middle layer) smooth muscle to contract moving blood
tunica externa (outermost layer) connective tissue |
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Term
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Definition
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Term
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Definition
| closing of ventricular valves |
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Term
| reasons for change in heart rate |
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Definition
1. volume of blood pumped to accommodate cellular requirements (exercise)
2. body temperature
3. certain ions: K - lack of = arythmia
Ca - lack of = heart action depressed |
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Term
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Definition
| in brain, medulla oblongata contains cardiac center to maintain heart rate |
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