NETA Personal Trainer Practice Exam

What function do the internal and external obliques serve?

1. Rotate and extend the neck

2. Stabilize, rotate, and flex the spine

3. Control shoulder movements

4. Facilitate hip adduction

The correct answer is: Stabilize, rotate, and flex the spine

The internal and external obliques play a crucial role in stabilizing, rotating, and flexing the spine. These muscles are located on the sides of the abdomen and contribute to various movements associated with the torso. Specifically, they aid in lateral flexion and rotation of the trunk, which allows for complex movements such as twisting and bending. When the internal and external obliques contract, they help to stabilize the lumbar region, providing support to the spine during dynamic activities, which is essential for maintaining posture and preventing injury. Additionally, these muscles assist in flexing the spine, particularly during actions such as crunches or forward bending. In contrast, the other options do not accurately describe the primary functions of the oblique muscles. For instance, rotating and extending the neck predominantly involves the muscles around the cervical spine, while control of shoulder movements falls under the responsibility of the muscles in the shoulder girdle and upper back. Facilitating hip adduction pertains to the muscles of the inner thigh, not the obliques. Thus, the comprehensive function of stabilizing, rotating, and flexing the spine distinctly characterizes the role of the internal and external obliques.