SciShow
Why Doesn't Your Sphincter Get Tired?
Keeping a muscle clenched usually tires it out eventually, but that’s not the case for sphincters, which do things a little differently.
Amoeba Sisters
Muscle Tissues and Sliding Filament Model
Join the Amoeba Sisters a they explore different muscle tissues and then focus on the sliding filament theory in skeletal muscle! This video also briefly talks about muscle naming, some vocabulary (such as agonists and antagonists)...
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.
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
Excitation-Contraction Coupling in Skeletal Muscle [Part 2/2]
Part 2 of 2 of excitation-contraction coupling | In this video, we discuss excitation-contraction coupling from opening of calcium channels in the sarcoplasmic reticulum (SR) all the way through cross-bridge cycling between actin and...
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
043 The details of Muscle Contraction
In this video, I go into the nitty gritty details of how muscle contraction works at the level of actin and myosin in the Sarcomere. I deal with words like troponin and tropomyosin, sarcoplasmic reticulum and Terminal Cisternae. Fun...
Mazz Media
Muscle Function
This live-action video program is about muscle function. The program is designed to reinforce and support a student's comprehension and retention of the term through use of video footage, photographs, diagrams and colorful, animated...
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...
Khan Academy
Khan Academy: Biology: Tropomyosin and Troponin
An explanation of muscle contraction with tropomyosin and troponin. [9:22]
Khan Academy
Khan Academy: Heart Muscle Contraction: Calcium Puts Myosin to Work
See exactly how calcium binds troponin-C and allows myosin to do some work. Rishi is a pediatric infectious disease physician and works at Khan Academy. [10:03]
Sophia Learning
Sophia: Nervous System and Contractions: Lesson 1
This lesson will investigate the role of the nervous system in muscle contractions. It is 1 of 4 in the series titled "Nervous System and Contractions."
Khan Academy
Khan Academy: Tropomyosin and Troponin
Tropomyosin and troponin and their role in regulating muscle contraction. How calcium ion concentration dictates whether a muscle is contracting or not.