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Title : The Heart, part 1 - Under Pressure: Crash Course A&P #25
Description : Your heart gets a lot of attention from poets, songwriters, and storytellers, but today Hank's gonna tell you how it really works. The heart’s ventricles, atria, and valves create a pump that maintains both high and low pressure to circulate blood from the heart to the body through your arteries, and bring it back to the heart through your veins. You'll also learn what your blood pressure measurements mean when we talk about systolic and diastolic blood pressure.

Table of Contents
Heart's Ventricles, Atria and Valves Create a Pump 3:25
Maintains Both High and Low Pressure 3:25
Blood Circulates From the Heart to the Body Through Your Arteries 4:47
Blood Circulates From the Body to the Heart Through Your Veins 4:49
Systolic and Diastolic Blood Pressure 7:58

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