Final answer:
The anterior body region is the front of the body. The orbital, crural, and antecubital regions are all anterior. The gluteal region is posterior, hence it is not an anterior body region.
Step-by-step explanation:
The question asks to identify which of the following is not an anterior body region:
- Orbital
- Crural
- Antecubital
- Gluteal
The anterior region refers to the front of the body. Orbital relates to the eye socket and is indeed an anterior body part. Crural refers to the leg, specifically the anterior part of the leg between the knee and the foot, while antecubital is the region in front of the elbow, also on the anterior side of the body. The gluteal region, however, corresponds to the buttocks, which is on the posterior or backside, making it the correct answer to the question as it is not an anterior body region.