An official Site of the United States authorities. Here's how you already know we are Formal. dot gov icon Good Vocabulary: connected terms and phrases Substances & buildings in the body abductor accessorius acetylcholine ACL ACTH folate follicular foramen foramen ovale fornix myocardium myofibril myofibrillar myofilament myology tegument temporomandibular https://www.youtube.com/watch?v=A07qHOeWON8