Final answer:
The rotation of the pelvis affects the ability to be in pigeon or hero's pose in yoga, as it impacts the mobility and stability needed for these positions. The limited movement of the pelvis provides the necessary support and balance for such poses.
Step-by-step explanation:
In terms of skeletal anatomy, the rotation of the pelvis affects your ability to be in pigeon or hero's pose. The pelvis is essential for supporting the upper body and transferring weight to the lower limbs. Since the pelvis serves as an attachment point for trunk and lower limb muscles and protects the internal pelvic organs, its mobility and stability are crucial for these poses. The pigeon pose requires hip flexibility and external rotation of the femur, which is affected by the tilt and rotation of the pelvis. Conversely, the hero's pose requires the pelvis to tilt back and the femur to rotate internally, again impacted by the pelvis' orientation.
The pelvic girdle has limited movement compared to other parts of the skeleton to provide stability and support for the body. Its connection with the sacrum restricts its range of motion but allows it to serve as a foundation for the lower limbs. The ability of the pelvic girdle to stabilize and support the body is critical in maintaining balance and proper alignment during various yoga poses like pigeon and hero's pose.