1. Axial Skeletal System

2. Hematoma: a blood clot which fills the space of broken bones
Hematoma: a blood clot which fills the space of broken bones. Area will be inflamed and swollen
Fibrocartilage callus: these fibers form and tie ends of bones together.
4 steps to bone repair

3. 3. Bony callus: osteoblasts produce spongy bone and later a bony callus that joins the broken bones together. 4. Remodeling: osteoblasts build new compact bone and new medullary cavity
Bone repair continued

4. Skull = Cranium and facial bones
3 parts

5. 1. Cranium: made up of 8 bones separated by sutures.
Infants have fontanels which is an opening between cranial bones. Will close by 2 years old to form suture lines.
Frontal (1)
Parietal (2)
Occipital (1)
Temporal (2)
Sphenoid (1)
Ethmoid (1)

6. On the temporal bone External auditory meatus- (ear canal)
Mandibular fossa-articulates with mandible
Mastoid process-holds neck muscles
Styloid process-attachment for tongue muscle & larynx
Zygomatic process-cheek bones
On the temporal bone

7. 2. Facial bones (14) Maxillae-upper jaw (2)
Palatine bones-roof of mouth (2)
Zygomatic bones- cheeks(2)
Lacrimal bones- (2)
Nasal bones- (2)
Vomer bone- forms nasal septum (1)
Inferior nasal concha-supports
mucous membrane (2)
Mandible-lower jaw (1)
2. Facial bones (14)

8. 3. Hyoid bone U-shaped bone
Only bone in the body that does NOT articulate with another.
Anchors the tongue
3. Hyoid bone

9. 1. Foramen- a round opening through a bone
1. Foramen- a round opening through a bone *the larges in the body is the Obturator foramen(pelvis) and foramen magnum (base of skull) 2. Fossa-a depression; often shallow 3. Meatus-a tube-like passage through a bone 4. sinus- a cavity or hollow space
Openings in the skull