How many bones does the axial skeleton consist of?
- 80 bones
* make up the midline of the body
What does the actual bones support and protect?
Organs of: • Head • Neck • Chest • Pelvis
What attachments does axial skeleton provide?
Attachment sites for muscles that move:
• Head
• Neck
• Trunk
What are the bones of the Axial Skeleton
- Skull
- Hyoid bone
- Vertebral column
- Thoracic cage
How can the skull be subdivided?
- By location
* By Function
What are the 2 subdivisions of the skull?
- cranium
* facial bones
What are the bones of the cranium important for?
• House and protect the brain
What are the 6 that bones composed the cranium?
- ONE frontal bone
- TWO parietal bones
- TWO temporal bones
- ONE occipital bone
- ONE sphenoid bone
- ONE ethmoid bone
What are the facial bones important for
• Serve as attachments sites for the muscles of chewing and facial expression
What are the 8 facial bones?
- TWO maxillary bones
- TWO zygomatic bones
- TWO lacrimal bones
- TWO nasal bones
- TWO inferior nasal conchae
- TWO palatine bones
- ONE mandible bone
- ONE vomer
Exterior view of skull bones pt1.
- Frontal bone
- Parietal bones
2a. Inter parietal bone - Occipital bone
- Temporal bones
- Mastoid process
- Zygomatic process
Exterior view of skull bones pt2.
- Articulate tubercle
- Mandibular fossa
- Styloid process
- Sphenoid (Greater wing)
- Zygomatic bone
- Nasal bone
Exterior view of skull bones pt3.
- Maxilla bone
- Lacrimal bone
- Ethmoid bone
- Vomer
- Palatine bone
- Sphenoid bone
Exterior view of skull bones pt4.
- Occipital condyle (2)
- Mandible
- Coronoid process
- Condylar process
- Middle and Inferior nasal concha
- Anterior nasal spine
What are the 4 sutures you are required to know?
- Frontal (coronal) suture
- Sagittal suture
- Squamous suture
- Lambdoid suture
Foramina and canals pt.1
- Optic canal
39a. Supraorbital Fissure
39b. Infraorbital Fissure - Supraorbital Foramen
- Infraorbital Foramen
- External acoustic meatus
Formina and canals pt. 2
- Foramen Ovale
- Foramen Spinosum
- Foramen Lacerum
- Carotid Foramen
48 Jugular Foramen - Mental Foramen
- Mandibular Foramen
