Muscle Structure and Contraction 

Great video! I'm writing this to help myself remember it: M line is the Middle of the Myosin (and the sarcomere), Z line is the end. The i band is only light (actin, the thin filaments.. actually appears light) The H band is only heavy (Myosin) -no overlap The A band is All of the heavy, including where it overlaps with light. Remember the myosin is heavy because it holds the myosin heads While contracting, H band disappears, i bands get smaller, A stays the same (Myosin doesn't grow/shrink)

Love your videos! Makes a complicated subject simple -

Thank you. That is a great compliment for a teacher.

You are welcome. Thanks for letting me know.

Happy that I was able to help you get the concept. Best wishes on your continued studies.

You are welcome. I am happy that this video could clarify the topic for you. Best wishes on your studies.

Thank you SO much for posting this video. I missed my last Anatomy class and this was the subject. I'm retaking A&P and I never understood sarcomere contraction. This made the subject very clear.

Thank you so much! I am doing the IB and this video really cleared things up for me. My book uses a different approach and I was going mad because I did not understand it. Now I know, how everything works !! Thanks again!

Hats off Larry Sir, Your video is best. it save my lyf

THANK YOU SO MUCH FOR THIS VIDEO!!!! This video has saved me! It's so simple and informative and is perfect for me as I find the google explanations VERY scientific, technical and confusing! This has really helped me with an assignment, thank you so much!

this is much more interesting then a bunch of paragraphs! thanks for this!

Thanks!

Go to my channel page and there is a link to my business site under the personal information at the right-top of the page.

The best explanation, maraming salamat po!

I am a bit late getting back to my mail. Hope the test went well, and the concepts I illustrate were helpful?

where i can get all grasshopper muscles??

First!