The document summarizes key bones and structures of the human skeletal system, including:
1) The orbit of the skull is formed by 7 bones: frontal, zygomatic, maxillary, sphenoid, ethmoid, lacrimal and palatine.
2) The hyoid bone helps support the tongue.
3) The skull is a framework that encloses and protects the brain, composed of many bones.
4) The vertebral column consists of 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, the sacrum and coccyx.
5) The appendicular skeleton includes the pectoral girdle, upper limbs