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...

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...

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,...

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/>

This video tutorial discusses the Muscarinic cholinergic receptors: 0:00. Intro 0:15. What are cholinergic receptors? 0:25. What are muscarinic receptors? 1:52. Act through G-Protein coupled receptors that act through 2nd messengers...

In this video, we discuss how the electrical conduction system generates a pacemaker potential by viewing the action potential diagram.

In this video, we explore the structure and functions of the major branches of cranial nerve IX (the vagus nerve), specifically in the thoracic cavity with emphasis on the major nuclei in the medulla.

This brief video tutorial discusses why the heart needs its own circulatory system, identifies the principle coronary arteries and cardiac veins and briefly discusses coronary dominance. 0:00. Introduction 0:19. What is the coronary...

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...

The first phase of the Cardiac Cycle is Atrial Systole. In this phase, we see a number of things happening. We take a look at the P wave of the electrocardiogram, the pressure changes in the atria and ventricles, as well as the volume of...

This video tutorial discusses Adrenergic receptors: 0:00. Intro 0:16. What are adrenergic receptors? 0:26. There are 2 types of adrenergic receptors 0:42. G-Protein coupled receptors that act through 2nd messengers 2:01. Alpha adrenergic...

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,...

In this episode, I discuss the effect of Adrenaline and Acetylcholine on heart rate. Adrenaline speeds it up and Acetylcholine slows it down. They both have their effect by modifying the conductance for ions such as Sodium, Potassium and...

In this video, we explore the biochemical events that take place during the action potential of an individual cardiomyocyte.

In this video, we discuss the components of and functions of the electrical conduction system of the heart.

In this playlist, we discuss clinically relevant EKG patterns. This video specifically covers supraventricular tachycardia (and its basic mechanism).

This brief tutorial covers the conduction system of the heart

The cardiovascular system, also known as the circulatory system, is the transportation system of the body. The major structures that make this possible are the heart, blood vessels and blood. Simply put, the heart pumps the blood in...