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.

得出胸骨上间隙颈深筋膜浅层和舌骨下筋膜围成，而不同于以往中描述的颈深筋膜浅层分为两层附着于胸骨形成。