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: Three Types of Muscle
Find out what makes smooth muscle, cardiac muscle, and skeletal muscle similar and different from one another. Rishi is a pediatric infectious disease physician and works at Khan Academy.
PBS
Pbs Learning Media: Crash Course Anatomy and Physiology: Muscles, Part 1: Muscle Cells
We're kicking off our exploration of muscles with a look at the complex and important relationship between actin and myosin. Your smooth, cardiac, and skeletal muscles create movement by contracting and releasing in a process called the...
Crash Course
Crash Course A&p #22: Muscles, Part 2 Organismal Level
Hank calls in a friend to do his push ups for him today to explain how skeletal muscles work together to create and reverse movements. Hank and Claire also demonstrate the role size plays in motor units, the three phase cycle of muscle...
Sophia Learning
Sophia: Muscle Contractions: Macro View
A narrated tutorial illustrating how skeletal muscles contract to allow the body to move. [3:44]
Khan Academy
Khan Academy: The Musculoskeletal System: Le Bron Asks: What Muscles Do We Use?
LeBron James asks Sal Khan about which muscles we use when we shoot a basket. [3:14]
Khan Academy
Khan Academy: Calcium Puts Myosin to Work
This video shows exactly how Calcium binds Troponin-C and allows Myosin to do some work. [10:02]
Sophia Learning
Sophia: Muscle Building and Steroids
This lesson will describe the effects that exercise and steroids have on your muscles. It is 1 of 2 similar lessons.