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MEASUREMENTS OF CIRCULATORY SYSTEM

Dive into the world of circulatory system measurements with Mrs. Luff's 7th-grade life science class. Learn about the heartbeat, pulse, and blood pressure through engaging activities and descriptive explanations. Explore the impact of factors like activity levels, caffeine, and body size on these measurements.

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MEASUREMENTS OF CIRCULATORY SYSTEM

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  1. MEASUREMENTS OF CIRCULATORY SYSTEM Mrs. Luff 7th Grade Life Science

  2. HEARTBEAT “LUB-DUB" sound made by the closing of the valves of the heart. LUB- tricuspid/bicuspid DUB – two semilunar ONE BEAT = ONE LUB-DUB

  3. HEARTBEAT Increase Rate Decreased Rate Activity Caffeine Smaller body size (bird) Less physically fit Less activity (resting) Larger body size (horse) More physically fit

  4. PULSE • caused by the regular stretching and relaxing of the arteries when the blood spurts through them. PULSE RATE = HEARTBEAT RATE

  5. Are felt wherever the arteries are close to the skin. • Wrist • Temples • Armpits • Ankles • Inside thigh • neck Pulse Points

  6. BLOOD PRESSURE • As the heart beats, the blood surges against the artery walls. A measure of this force • is called blood pressure. • Blood pressure is not a constant pressure. The pressure is great when the ventricles • are pushes on the blood; thepressure is less when the ventricles are relaxed. • 3. NORMAL BLOOD PRESSURE = 115/80 • 4. HYPERTENSION - high blood pressure

  7. sphygmomanometer

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