Crash Course
Muscles – Organismal Level (Part 2)
Humans use 200 muscles to take one step — that's a lot of muscles! Learners see how skeletal muscles work to pull on bones, creating movement. The narrator then explores motor units, muscle twitches, impulses, contractions, and isotonic...
SciShow
What Are Muscle Knots?
How is a muscle knot created, and how do you get rid of them? The video addresses these questions with evidence from research. Pupils ultimately learn that we need more information to determine the origin and best treatment.
Curated OER
Muscular System Structure and Function
A slide show on the muscular system is narrated, discussing the types of muscles and their functions. The muscle is shown in all its parts; the narrator briefly touches on filaments and contraction.
Curated OER
Human Body - Strength - Part 2/4
When a hiker gets trapped under a one-and-a-half ton piece of sandstone, he is shockingly able to throw off the slab. Because we normally use only one-third of our muscle fibers at a time, the potential for more is available in...
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.
Sophia Learning
Sophia: Muscular System: Lesson 2
This lesson will introduce the structure and function of the bodies muscular system including the three types of muscle. It is 2 of 6 in the series titled "Muscular System."
Crash Course
Crash Course A&p #21: 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...
Sophia Learning
Sophia: Muscle Contractions: Macro View
A narrated tutorial illustrating how skeletal muscles contract to allow the body to move. [3:44]
Sophia Learning
Sophia: Skeletal Muscles
A narrated video explains the structure and function of the skeletal muscles within the human body. [4:17]
Sophia Learning
Sophia: Types of Skeletal Muscle and Muscle Contraction Overview: Lesson 1
This lesson will describe the two basic types of skeletal muscle: "fast" and "slow" muscles. It is 1 of 2 in the series.