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.

得出胸隙应是由颈深筋膜浅层和舌下筋膜围成，而不同于以往教科书中由颈深筋膜浅层分为两层附着于胸形成。