THE SKULL 1262020 SCNM ANAT 604 Skull 1

THE SKULL 12/6/2020 SCNM, ANAT 604, Skull 1

OBJECTIVES • • • Identify the bones of Skull Identify the paired & unpaired bones of Skull Identify the Articulations of Skull Describe major features and landmarks of Skull Identify Cranial Vault and Foramina of Skull Understand common Clinical Factors related to Skull

SKULL • COMPOSED OF 22 DIFFERENT BONES • SUTURES • FORAMINA 12/6/2020 SCNM, ANAT 604, Skull 3

SKULL

FRONTAL (1) • SQUAMOUS • ORBITAL PLATE • SUPERCILIARY RIDGE – SUPRAORBITAL FORAMEN (NOTCH) • FRONTAL SINUS • GLABELLA 12/6/2020 SCNM, ANAT 604, Skull 5

FRONTAL ARTICULATIONS • NASAL • PARIETAL – CORONAL SUTURE • • • ZYGOMA SPHENOID LACRIMAL MAXILLA TEMPORAL 12/6/2020 SCNM, ANAT 604, Skull 6

PARIETAL (2) • PTERION • TEMPORAL LINES • MIDDLE MENINGEAL ARTERY BRANCHES 12/6/2020 SCNM, ANAT 604, Skull 7

PARIETAL ARTICULATIONS • FRONTAL • SPHENOID • TEMPORAL – SQUAMOUS ST. • CONTRALATERAL PARIETAL – SAGITTAL ST. • OCCIPITAL – LAMBDOIDAL ST. 12/6/2020 SCNM, ANAT 604, Skull 8

TEMPORAL (2) • SQUAMOUS – MIDDLE MENINGEAL A. • PETROUS – – 12/6/2020 EAR MASTOID PR. STYLOID PR. ZYGOMATIC PR. SCNM, ANAT 604, Skull 9

TEMPORAL ARTICULATIONS • • • SPHENOID OCCIPITAL PARIETAL ZYGOMA MANDIBLE – SYNOVIAL JOINT 12/6/2020 SCNM, ANAT 604, Skull 10

OCCIPITAL (1) • EXT. OCCIPITAL PROTUBERANCE • SUP. & INF. NUCHAL LINES • BASILAR PART • OCCIPITAL CONDYLES • FORAMEN MAGNUM 12/6/2020 SCNM, ANAT 604, Skull 11

OCCIPITAL ARTICULATIONS • PARIETAL – LAMBDOID SUTURE • TEMPORAL • SPHENOID (NOT VISIBLE) • ATLAS (C 1) (SEE NEXT SLIDE) 12/6/2020 SCNM, ANAT 604, Skull 12

ATLAS C 1 • LATERAL MASSES – 4 ARTICULAR FACETS • INJURIES

ETHMOID (1) • • CRISTA GALLI CRIBIFORM PLATE PERPENDICULAR PLATE NASAL CAVITY, LAT. WALL SUP. & MID. CONCHA ETHMOID AIR CELLS ORBIT, MED. WALL 12/6/2020 SCNM, ANAT 604, Skull 14

ETHMOID ARTICULATIONS • • FRONTAL SPHENOID NASAL LACRIMAL (NOT VISIBLE) VOMER INF. NASAL CONCHA PALATINE MAXILLA 12/6/2020 SCNM, ANAT 604, Skull 15

INFERIOR NASAL CONCHA (2) • SCROLL-LIKE BONE • LATERAL WALL OF NASAL CAVITY • ARTICULATES WITH – – 12/6/2020 ETHMOID LACRIMAL MAXILLA PALATINE SCNM, ANAT 604, Skull 16

SPHENOID (1) • KEYSTONE OF SKULL • BODY – SELLA TURCICA • ANTERIOR CLINOID PROCESS • POSTERIOR CLINOID PROCESS – INT. CAROTID ARTERY – SPHENOID SINUS • DEEP TO SELLA TURCICA 12/6/2020 SCNM, ANAT 604, Skull 17

SPHENOID (Cont. ) • LESSER WING • GREATER WING • PTERYGOID PLATES – MEDIAL – LATERAL – PTERYGOID FOSSA (BETWEEN PLATES) 12/6/2020 SCNM, ANAT 604, Skull 18

SPHENOID ARTICULATIONS • • • FRONTAL ETHMOID TEMPORAL PARIETAL OCCIPITAL PALATINE VOMER MAXILLA ZYGOMA 12/6/2020 SCNM, ANAT 604, Skull 19

VOMER (1) • PERPENDICULAR PLATE – FORMS PART OF NASAL SEPTUM • ARTICULATES WITH – – SPHENOID ETHMOID PALATINE MAXILLA 12/6/2020 SCNM, ANAT 604, Skull 20

VOMER ARTICULATIONS • • • SPHENOID ETHMOID PALATINE MAXILLA NASAL SEPTAL CARTILAGE 12/6/2020 SCNM, ANAT 604, Skull 21

ZYGOMA (2) • TEMPORAL PROCESS • ZYGOMATIC ARCH – "CHEEK BONE" • ARTICULATES WITH – – 12/6/2020 FRONTAL MAXILLA SPHENOID TEMPORAL SCNM, ANAT 604, Skull 22

MAXILLA (2) • BODY – MAXILLARY SINUS (DEEP) • • ORBITAL PLATE ALVEOLAR PROCESS INFRAORBITAL F. INFERIOR ORBITAL FISSURE 12/6/2020 SCNM, ANAT 604, Skull 23

MAXILLA ARTICULATIONS • • • ZYGOMA SPHENOID PALATINE ETHMOID LACRIMAL FRONTAL NASAL CONTRALATERAL MAXILLA VOMER INFERIOR NASAL CONCHA 12/6/2020 SCNM, ANAT 604, Skull 24

PALATINE (2) • HORIZONTAL PLATE – POSTERIOR 1/3 OF HARD PALATE • PERPENDICULAR PLATE – CONTRIBUTES TO ORBIT 12/6/2020 SCNM, ANAT 604, Skull 25

PALATINE ARTICULATIONS • MAXILLA • CONTRALATERAL PALATINE BONE • VOMER • ETHMOID • SPHENOID 12/6/2020 SCNM, ANAT 604, Skull 26

NASAL (2) • TWO SMALL BONES • FORM BRIDGE OF THE NOSE • ARTICULATE WITH – FRONTAL – MAXILLA 12/6/2020 SCNM, ANAT 604, Skull 27

LACRIMAL (2) • NASOLACRIMAL CANAL • ARTICULATES WITH – – 12/6/2020 FRONTAL ETHMOID MAXILLA INFERIOR NASAL CONCHA SCNM, ANAT 604, Skull 28

MANDIBLE (1) • • • BODY ANGLE RAMUS CORONOID PR. NOTCH CONDYLAR PR. – CONDYLE • ALVEOLAR PR. • MENTAL F. 12/6/2020 SCNM, ANAT 604, Skull 29

MANDIBLE (Cont. ) • • • BODY RAMUS CONDYLE CORONOID PR. MYLOHYOID LN. MANDIBULAR F. – LINGULA 12/6/2020 SCNM, ANAT 604, Skull 30

SKULL FRACTURES • • • LINEAR COMMINUTED BASILAR DEPRESSED COUNTRECOUP