Crash Course
Big Guns: The Muscular System - CrashCourse Biology
Hank tells us the story of the complicated chemical dance that allows our skeletal muscles to contract and relax.
Bozeman Science
The Muscular System
Paul Andersen explains the three types of muscle found in humans; striated, smooth and cardiac muscle. He explains how actin and myosin interact to contract the sarcomere in a muscle. The sliding filament theory explains how ATP and...
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
Excitation-Contraction Coupling in Skeletal Muscle [Part 1/2]
Part 1 of 2 of excitation-contraction coupling | In this video, we discuss excitation-contraction coupling from events on the motor neuron axon all the way through opening of calcium channels in the sarcoplasmic reticulum (SR).
Catalyst University
Steps of Excitation-Contraction Coupling in Skeletal Muscle [Whole Video
In this video, we discuss all steps of excitation-contraction coupling in skeletal muscle from events on the motor neuron axon all the way through cross-bridge cycling between actin and myosin.
Catalyst University
The Cardiomyocyte Action Potential [Part 2]: Physiological Events in Cell
In this video, we will explore the physiological events in the cardiomyocyte that occur during the cardiac action potential. What occurs during each phase of the action potential?
Catalyst University
Events of Excitation-Contraction Coupling [Part 1]
In this video, we will discuss the events of Excitation-Contraction Coupling from the motor neuron action potential to release of Ca2+ from the sarcoplasmic reticulum (SR). **Part 2 Coming Soon
Institute of Human Anatomy
Debunking Myths About Bodies After Death
In this video, the teacher debunks common myths about what happens to the human body after death. Through dissections and explanations of anatomy and physiology, the teacher explains why hair and nails don't continue to grow after death...
Catalyst University
Muscle Physiology: Regulatory Proteins; Tropnin and Tropomyosin
Muscle Physiology: Regulatory Proteins; Tropnin and Tropomyosin
Curated Video
Muscle Contraction Made EASY: What REALLY Happens During Exercise
How do muscles actually contract? There's a lot involved in the process. And in this video, we talk about muscle contraction at the molecular level. We'll discuss sarcomeres, actin, myosin, the muscle action potential and the roles of...
Curated Video
042 How Calcium ion release results in Muscle Contraction
In this video, I show how the release of Calcium ions from the sarcoplasmic reticulum results in skeletal muscle contraction at the level of the sarcomere. Enjoy
Curated Video
Action Potentials and Contraction in Cardiac Muscle Cells
In this episode, I show how the Action potential is generated in cardiac muscle cells and how this results in Contraction of the Heart. When the action potential happens, calcium ions are released from the Sarcoplasmic reticulum, causing...
Curated Video
Drugs That Affect the Cardiovascular System
The circulatory system, like every other system in the body, is very important. And when there are problems with your cardiovascular system, your doctor may prescribe various medications to help. Let's take a look at five kinds of...
Catalyst University
The Cardiac Muscle Action Potential EXPLAINED
In this video, we explore the biochemical events that take place during the action potential of an individual cardiomyocyte.
Catalyst University
Anatomy - Mechanisms of Smooth Muscle Contraction
In this video, we explore the three general stimuli for smooth muscle contraction, their mechanisms, and how they converge on cross-bridge cycling. * Emphasis on smooth muscle in blood vessels
Professor Dave Explains
The Mechanism of Muscle Contraction: Sarcomeres, Action Potential, and the Neuromuscular Junction
We've learned about the types of muscle, including skeletal muscle, and we know then when these muscles contract, we are able to move our bodies around. But how exactly does this happen on the molecular level? There is an astonishing...
Curated OER
Skeletal Muscle Structure
Skeletal or striated, muscles are shown down to the chemical components. All the fibers that make up a muscle cell are described and animated. Use this to illustrate the parts of skeletal muscles for your anatomy or biology classes.
Khan Academy
Khan Academy: Biology: Role of the Sarcoplasmic Reticulum in Muscle Cells
A foundation for understanding how the nervous system signals for a muscle to contract. [14:42]
Sophia Learning
Sophia: Muscle Contractions: Micro Level: Lesson 1
This lesson will go into more detail describing how a muscle contracts. It is 1 of 4 in the series titled "Muscle Contractions: Micro Level."