Your heart is made of a special type of muscle, found nowhere else in the body! This unique muscle is specialized to perform the repetitive task of pumping your blood throughout your body, from the day you’re born to the day you die. We’ll take an in-depth look of how the heart accomplishes this on a cellular level, and learn about the proteins actin and myosin that are the workhorses that tug and pull on one another to create every single muscle contraction. You’ll appreciate the fact that your heart beat is a fairly sophisticated process!
10917_Calcium_puts_myosin_to_work.html
10913_Three_types_of_muscle.html
10914_Heart_cells_up_close_.html
10916_How_tropomyosin_and_troponin_regulate_muscle_contraction.html
All video content by Khan Academy is under their license: CC by NC SA
Website created using Khan Academy Static Downloader