The vessels that carry the blood from the heart to and from the shoulders and arms have to travel through a very narrow space above the top of the rib cage.
肩膀和手臂的血液通过血管运送到心脏，必须穿过胸腔顶部一个非常狭窄的空间。
2
For best results, all three patterns require openness of the breathing space (the rib cage and abdomen) and fine coordination of several muscle groups.
为了取得最好的成效，这三种呼吸模式都要求呼吸空间(胸腔及腹腔)的开阔及部分肌肉组织间的协调配合。
3
The Expamet Hy-Rib from is made of zine plate and fabricated an one-way U rib and an one-way space frame form.