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."
Khan Academy
Khan Academy: Preload and Afterload: Active Contraction vs. Passive Recoil
Go through the similarities and differences between the sarcomere and a slingshot! This video explores a contraction in terms of what happens to the interaction between actin and myosin and the length of the sarcomere. Then the video...
Khan Academy
Khan Academy: Preload and Afterload: Sarcomere Length Tension Relationship
Find out why the length of a sarcomere (in diastole) affects the amount of force that it can generate (in systole), and how that would look on a graph. Rishi is a pediatric infectious disease physician and works at Khan Academy. [8:50]
Khan Academy
Khan Academy: Active Contraction vs. Passive Recoil
Go through the similarities and differences between the sarcomere and a slingshot! [7:30]