In anatomical terms, referring to front and back , the pectoral region is to the scapular region.

The best answer to fill in the blank in this question would be: In anatomical terms, referring to front and back, the pectoral region is anterior to the scapular region.

Explanation:

Anatomically speaking, our body parts also have location, and when we refer to them, we must use the appropriate term when we are locating these parts of the body relative to the body´s axes.

In the medical and scientific fields, the mapping of the human body and the position of all parts of it depend on a series of axes that define the planes and direction of these body parts. One such axis devides the body into anterior aspect and posterior aspect, on a vertical line that goes from the head to the feet. And this not only applies to regions of the body, but to specific organs as well. This is why we can say that a bone, like the ulna, has an anterior, and a posterior, ventral, or dorsal aspects. Since the pectoral region is before the axis that divides our bodies vertically, then we will say that relative to the scapular region, the pectoral region is anterior.  

In anatomical terms, referring to front and back , the pectoral region is anterior to the scapular region

Explanation:

"Anterior: means towards the front (the eyes are anterior to the brain)-[ventral]."

Reference: Ebneshahid, A. “Anatomical Terminology.” Los Angeles Mission College.

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