A colleague I work with on other courses has kindly provided some of his manuals with free access. These are all mapped to the same syllabus as the one used by Level 3 Pilates. The syllabus content is generic but is most commonly used in a Gym/PT setting which is why you might see mention of this..
A great resource for biomechanics
https://exrx.net/Lists/Muscle
BBC Bite Sized A&P
https://www.bbc.co.uk/bitesize/topics/zxq7j6f
A Pilates A&P Lecture –
https://youtu.be/m_Dow75Twio?si=zVWjdhDdtFDtV0l-&t=135
This video is only available direct on YouTube as it shows a cadaver dissection of the front line. This shows how we are literally connected from top to botton. It’s fascinating – but be warned – it is a real dissection https://youtu.be/6rYe4IdnCcs?si=sl11ou6m9FJ41BdZ