上胸骨

It is found the suprasternal space should be enclosed by the superficial layer of the deep cervical fasciae and the fasciae of the infrahyoid muscles, rather than the past opinion of the textbook.

得出胸骨上间隙应是由深筋膜和舌骨下肌筋膜围成，而不同于以往教科述的由深筋膜为两附着于胸骨形成。