Axial Skeleton

Appendicular (blue) – 126 bones Skeleton 206 Bones Axial (blue) – 80 Bones Appendicular (blue) – 126 bones

Axial Skeleton 80 bones Skull: 28 Hyoid: 1 Vertebrae: 26 Ribs: 24 Sternum: 1 Axial Skeleton is shaded blue

Skull Skull: cranial and facial bones (22) Cranial (8) frontal parietal (2) temporal (2) occipital sphenoid ethmoid Facial Bones (14) nasal (2) palatine (2) maxilla (2) zygomatic (2) mandible vomer lacrimal (2) inferior nasal conchae (2)

Sutures Coronal suture Lambdoidal suture Sagittal suture Squamous suture

Frontal Frontal

Frontal Supraorbital Margin Frontal Glabella Supraorbital foramen

Frontal Frontal

Parietal Parietal

Temporal Zygomatic process Temporal Zygomatic process Styloid process Mastoid process External acoustic meatus External acoustic meatus Mastoid process Styloid process

Temporal Jugular foramen Internal acoustic meatus Jugular foramen

Temporal Mandibular fossa Zygomatic process Mandibular fossa Styloid process Carotid canal Jugular Foramen Mastoid process External acoustic meatus External acoustic meatus Styloid process Mastoid process Jugular foramen Carotid canal

Occipital Occipital

Occipital Occipital Superior view Posterior view

Occipital Occipital condyle External occipital protuberance Foramen magnum Occipital condyle Foramen magnum External occipital protuberance

Occipital Foramen magnum

Sphenoid Sphenoid

Sphenoid Lesser wing Optic foramen Lesser wing Greater wing Sella turcica Foramen ovale Optic foramen Foramen ovale Sella turcica Greater wing

Sphenoid Foramen ovale Pterygoid processes Pterygoid processes

Ethmoid Ethmoid

Ethmoid Ethmoid

Ethmoid Crista galli Cribriform plate Crista galli Cribriform plate Olfactory foramina Olfactory foramina

Nasal Nasal

Palatine Palatine

Maxilla Infraorbital foramen Infraorbital foramen Alveolar process (margin) Maxilla Alveolar process(margin)

Maxilla Incisive foramen Palatine process Incisive foramen

Zygomatic Temporal process Zygomatic Temporal Process

Mandible Mandible

Mandible Condylar process/Mandibular condyle Mandibular notch Coronoid process Alveolar process (margin) Mental foramen Body Ramus

Vomer Vomer

Lacrimal Lacrimal fossa Lacrimal fossa Lacrimal

Inferior Nasal Conchae

Bones of the Orbit

Sinuses

Sinuses

Fontanels of the Fetal Skull

Hyoid No articulations Suspended from styloid process by ligaments

Vertebral Column

Vertebral Column

Spinal Conditions

Herniated Disc

Cervical Vertebrae (7)

Cervical Vertebrae(1-2) C1 – Atlas C2 – Axis - Dens

Cervical Vertebrae (3-7) Spinous process Vertebral foramen Transverse process Body Superior articular process (facet) Inferior articular process (facet) Lamina Pedicle Vertebral arch

Thoracic Vertebrae (12)

Thoracic Vertebrae (1-12) Spinous process Vertebral foramen Transverse process Body Superior articular process (facet) Inferior articular process (facet) Lamina Pedicle Vertebral arch

Lumbar Vertebrae (5)

Lumbar Vertebrae (1-5) Spinous process Vertebral foramen Transverse process Body Superior articular process (facet) Inferior articular process (facet) Lamina Pedicle Vertebral arch

Sacrum and Coccyx Sacrum - 5 fused Coccyx - 4 fused

Sternum and Ribs Manubrium Jugular notch Clavicular notch Body Xiphoid process True ribs (1-7) False ribs (8-12) Floating ribs (11,12)