Irregular Bones of the body emp327

false ribs

8-12 five lower ribs costae on either side of the rib cage that do not unite directly to the sternum

hyoid

located in the neck between the mandible and the larynx, supports the tongue and provides attachment for some of its muscles does not directly come in contact with other bones

xiphoid process

lower pointed narrow portion of the sternum

true ribs

1-7 upper costae attached to sternum through costal cartilage

thorax bone (thoracic bone)

25 bones total Consists of 1 Sternum (manubrium), 24 Costal Ribs 12 on each side, (1-7 true ribs, 8-12 false ribs, 11 and 12 floating ribs

floating ribs

Ribs costae 11-12 the last two pairs of ribs that are only attached to the lower posterior ribs does not attach to the sternum

thoracic cage

composed of thoracic vertebrae, ribs, costal cartilages, sternum, support of upper body, protection of internal organs (lungs,heart, and upper abdominal organs)

irregular bones of the body

examples are the vertebrae and the ossicles of the ears

manubrium

the superior portion of the sternum

spinal column

vertebral column