The Heart, Part 1 - Under Pressure: Crash Course Anatomy & Physiology #25

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. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: Download it here for Android Devices: Chapters: Introduction: The Heart 00:00 Structure of the Heart 1:41 The Heart's Ventricles, Atria, and Valves 3:25 Arteries & Veins 4:35 Pulmonary Circulation Loop 5:04 Systemic Loop 6:14 Systolic and Diastolic Blood Pressure 7:58 Review 8:59