Contraction of Muscle
In this biology learning exercise, students examine the internal functions of the human body while considering the factors needed to explain the physiological reactions.
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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...
11 mins 9th - 12th Science CCSS: Adaptable
Role of the Sarcoplasmic Reticulum in Muscle Cells
Many of the concepts that are mentioned as an aside in previous videos are re-introduced here. By listening to Salman's recap of an action potential, students will understand how a nerve impulse can stimulate the release of...
15 mins 10th - 12th Science
Tropomyosin and tropin and their tole in regulating muscle contraction
To fully understand the actions of the muscle cells in overall contraction, students should watch this video which combines a recap of the previous video and a description of the interactions between the main proteins. It will be...
9 mins 10th - 12th Science