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Crash Course
The Heart, part 2 - Heart Throbs: Crash Course A&P
Today we're talking the heart and heart throbs -- both literal and those of the televised variety. Hank explains how your heart's pacemaker cells use leaky membranes to generate their own action potentials, and how the resulting...
Curated Video
The Pacemaker Potential of the SA Node and the AV Node
In this episode, I talk about how the Pacemaker Potential results in the signal that causes the heart to beat. I show how the greater conductance for Sodium ions in the Pacemaker Cells in the S.A. Node cause the cells to depolarize,...
Curated Video
The Pacemaker of the Heart - SA and AV Nodes Made EASY!
In this video, I talk about the pacemaker potential of the heart. We're going to dig into the SA and AV Nodes, how they work, and what happens when things go wrong.<br/>
Catalyst University
The Pacemaker Potential EXPLAINED
In this video, we discuss how the electrical conduction system generates a pacemaker potential by viewing the action potential diagram.
Curated Video
GCSE Biology - The Heart #23
This video covers the structure and function of the heart, the double circulatory system, the associated blood vessels, pacemaker cells and the coronary arteries.
Amoeba Sisters
Conduction System of the Heart
Join the Amoeba Sisters as they introduce the cardiac conduction system! This video mentions conductive cardiac cells (focusing on pacemaker cells) in the SA and AV nodes and discusses general steps of spontaneous depolarization. It also...
Science360
Fuel Cell Efficiency - Science of Innovation
To operate and function efficiently, machines of all shapes and sizes need a source of energy. A series of innovations is helping to make energy conversion within fuel cells as efficient as possible.
Provided by the National...
Provided by the National...
Science360
Fuel Cell Efficiency - Science of Innovation
To operate and function efficiently, machines of all shapes and sizes need a source of energy. A series of innovations is helping to make energy conversion within fuel cells as efficient as possible.
TED Talks
TED: Caring for engineered tissue | Nina Tandon
Tissue engineer and TED Fellow Nina Tandon is growing artificial hearts and bones. To do that, she needs new ways of caring for artificially grown cells -- techniques she's developed by the simple but powerful method of copying their...
MinuteEarth
What Are Brain Waves?
MinuteEarth
What Are Brain Waves?
Even the parts of our brains that don't control physical movement show a lot of rhythm, and that might be integral to how our brains...
Institute of Human Anatomy
How the Heart Contracts: Understanding the Electrical Activity and Heart Arrhythmias
In this video, the teacher explains how the heart is able to contract dependably through its natural pacemaker, the SA node, and other specialized cells. The electrocardiogram (ECG) is also discussed as a highly effective method of...
Catalyst University
The Cardiac Conduction System
In this video, we discuss the components of and functions of the electrical conduction system of the heart.
Catalyst University
The Cardiomyocyte Action Potential [Part 1]: The Action Potential Graph
In this video, we take a look at the graph representing the cardiomyocyte action potential and what each region of the graph represents.<br/>
TED Talks
TED: A demo of wireless electricity | Eric Giler
Eric Giler wants to untangle our wired lives with cable-free electric power. Here, he covers what this sci-fi tech offers, and demos MIT's breakthrough version, WiTricity -- a near-to-market invention that may soon recharge your cell...
TED Talks
Steven Strogatz: The science of sync
Mathematician Steven Strogatz shows how flocks of creatures (like birds, fireflies and fish) manage to synchronize and act as a unit -- when no one's giving orders. The powerful tendency extends into the realm of objects, too.
Catalyst University
Cardiac Muscle Action Potential Diagram EXPLAINED
In this video, we discuss the events of the cardiac muscle action potential by viewing the action potential graph/diagram.
Curated Video
How the Heart Contracts - Step by Step
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,...
Catalyst University
Electric Rays: 200 V Electrifying Machines!
Here we explore interesting facts about Electric Rays, cartilaginous ray-fish that can generate up to 200 V of electricity to attack their prey or defend against predators.<br/>
Crash Course
The Heart – Heart Throbs (Part 2)
The heart has its own electrical supply, and even if separated from a body, will continue to beat. Classes learn about the electricity of the human heart in video 26 of a series of 47. Specifically, they explore pacemaker cells, SA nod,...
Khan Academy
Khan Academy: Action Potentials in Pacemaker Cells
Find out how the pacemaker cells use the movement of sodium, calcium, and potassium to get your heart beating! [15:40]