How the Heart Contracts - Step by Step
Автор: Interactive Biology
Загружено: 2023-04-27
Просмотров: 64548
Описание:
Let's dive into the cardiac action potential and how it results in the contraction of the heart. We'll talk about the signal that starts at the SA node and spreads throughout the heart. We'll also get into the phases of depolarization, the plateau, and repolarization and how calcium release results in muscle contraction.
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Time Stamps:
00:00 Introduction
00:30 SA node, AV Node and Pukinje Fibers
01:01 Cardiac Muscle Cells
01:41 All or nothing
02:00 Conduction Speeds
03:16 Cardiac Action Potential
05:02 Cardiac Muscle Contraction
05:45 Action Potential and Contraction Review
06:25 Calcium and Contraction
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