Axial Skeleton

4 Components of the Axial Skeleton

Skull

Hyoid Bone

Vertebral Column

Thoracic Cage

Hyoid Bone

Located in front of upper neck

Anchors Tongue

Vertebrosternal Ribs

Pairs 1-7

Direct attachment to sternum

Vertebrochondral Ribs

Pairs 8,9,10

Cartilaginous attachment to sternum

Floating Ribs

11+12 pairs

No attachment to sternum

Sternum

Composed of manubrium, body, and xiphoid process

Facial Bones (14)

Nasal concha (2)

Lacrimal bones (2)

Mandible (1)

Maxilla (2)

Nasal bones (2)

Palatine bones (2)

Vomer (1)

Zygomatic bones (2)

Cranial Bones (8)

Frontal (1)

Parietal (2)

Temporal (2)

Occipital (1)

Sphenoid (1)

Ethmoid (1)

Sections of Vertebral Column and #

7 Cervical vertebrae

12 Thoracic vertebrae

5 Lumbar vertebrae

Sacrum 4-5 fused Sacral vertebrae

Coccyx 3-4 small fused vertebrae “tailbone”

C1 Vertebrae

Atlas

C2 Vertebrae

Axis

Foreman

Hole through a bone, allows blood to pass through

Meatus

Passageway to the inside of the body (ear hole)

Fovea, Fossa

Small and Large flat surfaces where a muscle is running along it

Process

A projection of bone from a larger piece

Condyle

Rounded point of articulation