Anatomy of the Sacrum Quiz

The ilium is one of the bones that articulate with the sacrum, forming the sacroiliac joint.

The coccyx is a small triangular bone located below the sacrum, also known as the tailbone.

The sacrum is part of the vertebral column and specifically belongs to the sacral region.

The coccygeal cornu of the sacrum articulates with the coccyx.

The sacral promontory is a bony projection that helps support the weight of the body.

The sacrum is formed by the fusion of five vertebrae.

The ala of the sacrum articulates with the hip bones, forming part of the pelvis.

The sciatic nerve runs along the sacrum and innervates the lower limbs, controlling their movement.

The sacroiliac joint is the articulation point between the sacrum and the ilium.

The sacral foramina are openings that allow nerves and blood vessels to pass through the sacrum.

The gluteus maximus muscle attaches to the sacrum and is important for hip movement.

The sacrum provides structural support and helps bear the weight of the upper body.

The sacrospinous ligament attaches to the sacrum and helps stabilize the pelvis and spine.

The lambdoid suture is a feature of the skull, not the sacrum.

The mesoderm layer of embryonic tissue contributes to the formation of the sacrum.

The promontory is the anterior surface of the sacrum that faces the pelvic cavity.

The sacral artery supplies blood to the sacrum and nearby structures.