Muscles and Joints

1.  Here's a great 8 minute Muscle video:

https://www.youtube.com/watch?v=OSsntU6sTWI


2. Quick Bone & Muscle video:

https://www.youtube.com/watch?v=AMxIv1i33mI


3.  Wonderopolis: Why do our joints pop?

https://www.wonderopolis.org/wonder/why-do-our-joints-pop


4.  Brain Pop - Muscles

https://www.brainpop.com/health/bodysystems/muscles/