Generally speaking, abbreviations such as sched. or SKDs. (SKDs capitalized is mostly within military/governmental usage) will not appear in prose or similarly written texts. They are reserved for titles, headlines, shorthand notes, or other areas where space is a concern.
The pectoral girdle is an imcomplete ring because it is open in the back between what? The KGB Agent answer: The pectoral girdle is an incomplete ring because it is open in the back between the scapulae.
In humans, the pectoral girdle, or shoulder girdle, is made up of the scapula, clavicle and various muscle groups. It functions by connecting the upper limb to the spinal column through a series of muscles in the shoulder and upper back. Keep Learning.