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Skull Bones
7.2--Skull
Term | Definition |
---|---|
SKULL | CONTAINS 22 BONES. RESTS ON VERTEBRAL COLUMN. CONTAINS CRANIAL BONES AND FACIAL BONES |
CRANIAL BONES | FORM CRANIAL CAVITY; WHICH ENCLOSES AND PROTECTS BRAIN. EIGHT BONES; HOUSES NASAL CAVITY, ORBITS, PARANASAL SINUSES, AND MIDDLE AND INNER EAR CAVITIES |
FACIAL BONES | FORM THE FACE; FOURTEEN BONES |
FRONTAL BONE | FOREHEAD; ROOFS OF ORBITS; MOST OF CRANIAL FLOOR |
METOPIC SUTURE | LEFT AND RIGHT HALVES OF FRONTAL BONE BROUGHT TOGETHER; DISAPPEARS |
FRONTAL SQUAMA | THICK SCALELIKE PLATE OF BONE ON FOREHEAD (THAT CREASE THAT PROJECTS ON FOREHEAD) |
SUPRAORBITAL MARGIN | RIDGE ABOVE THE EYE; ROOF OF ORBIT/FLOOR OF CRANIAL CAVITY |
SUPRAORBITAL FORAMEN | HOLE; PASSAGEWAY FOR NERVE AND ARTERY |
SUPERORBITAL NOTCH | INCOMPLETE FORAMEN |
FRONTAL SINUSES | EMPTY CAVITY DEEP OF FRONTAL SQUAMA |
PARIETAL BONES | 2X; LEFT AND RIGHT. LARGE QUADRILATERAL. GREATER PORTION OF SIDES AND ROOF |
CORONAL SUTURE | CORONAL JOINT BETWEEN TEMPORAL BONE AND CORONAL SUTURE |
SAGITTAL SUTURE | SPLITS PARIETAL BONES |
PARIETAL FORAMIN | HOLES IN ANTERIOR OF PARIETAL |
LAMBOID SUTURE | BETWEEN PARIETAL AND OCCIPITAL |
SUTURAL BONE | INTERMEDIATE TO PARIETAL BONES AND OCCIPITAL BONE |
TEMPORAL BONES | 2X; INFERIOR AND LATERAL ASPECTS OF THE CRANIUM AND PART OF CRANIAL FLOOR |
TEMPORAL SQUAMA | THIN, FLAT PORTION OF TEMPORAL BONE; FORMS ANTERIOR AND SUPERIOR OF TEMPLE |
ZYGOMATIC PROCESS | ANTERIOR FROM INFERIOR PORTION OF TEMPORAL SQUAMA; FORMS JOINT WITH TEMPORAL PROCESS OF ZYGOMATIC (CHEEK) BONE = ZYGOMATIC ARCH |
MANDIBULAR FOSSA | INFEROPOSTERIOR SURFACE OF ZYGOMATIC PROCESS; |
ARTICULAR TUBERCLE | ANTERIOR TO MANDIBULAR FOSSA; FORMS TEMPORAL MANDIBULAR JOINT |
MASTOID PORTION | INFEROPOSTERIOR TO EXTERNAL AUDITORY MEATUS |
AUDITORY MEATUS | EAR CANAL |
MASTOID PROCESS | ROUNDED PROJECTION OF MASTOID PORTION OF TEMPORAL BONE POSTERIOR AND INFERIOR TO EXTERNAL AUDITORY MEATUS; POINT OF ATTACHMENT FOR SEVERAL NECK MUSCLES |
INTERNAL AUDITORY MEATUS | SUPRAPOSTERIOR TO AUDITORY MEATUS |
STYLOID PROCESS | INFERIORLY FROM INTERIOR SURFACE OF TEMPORAL BONE; IN OCCIPITAL BONE |
STYLOMASTOID FORAMEN | BETWEEN STYLOID PROCESS AND MASTOID PROCESS |
PETROUS PORTION | PYRAMIDAL; BASE OF SKULL BETWEEN SPHENOID AND OCCIPITAL |
CAROTID FORMAEN | CAROTID ARTERY PASSAGE WAY; IN PETROUS PROCESS |
JUGULAR FORAMEN | POSTERIO TO CAROTID FORAMEN; ANTERIOR TO OCCIPITAL BONE |
OCCIPITAL BONE | FORMS POSTERIOR PART AND MOST OF BASE OF CRANIUM |
FORAMEN MAGNUM | INFERIOR PART OF BONE; MEDULLA OBLONGATA CONNECTS WITH SPINAL CORD |
OCCIPITAL CONDYLES | 2X; ON EITHER SIDE OF FORAMEN MAGNUM |
ATLANTO-OCCIPITAL JOINTS | OCCIPITAL CONDYLES ARTICULATE WITH ATLAS TO CREAT |
HYPOGLOSSAL CANAL | INFEROLATERAL TO AUDITORY MEATUS |
NUCHAL LINES | MUSCLE ATTACHMENT SITES FOR NECK MUSCLE |
SPHENOID BONE | MIDDLE OF BASE OF SKULL; KEYSTONE--ARTICULATES WITH ALL OTHER BONES |
SUPERIOR ORBITAL FISSURE | TRIANGULAR SLIT BETWEEN GREATER AND LESSER WINGS |
FORAMEN ROTUNDUM | LOCATED AT JUNCTION OF ANTERIOR AND MEDIAL PARTS OF SPHENOID BONE |
FORAMEN OVALE | OPENING IN MANDIBULAR BRANCH |
FORAMEN SPINOSUM | POSTERIOR ANGLE OF SPHENOID |
FORAMEN LACERUM | ANTERIORLY TO SPHENOID, POSTERIORLY BY TEMPORAL AND OCCIPITAL |
OPTIC FORAMEN | BETWEEN BODY AND LESSER WING; ANTERIOR TO SELLA TURCICA |
SPHENOIDAL SINUS | SUPERIOR NASAL CAVITY |
SELLA TURICA | BONY, SADDLE-SHAPED STRUCTUREON SUPERIOR SURFACE OF BODY |
TUBERCULUM SELLAE | ANTERIOR RIDGE OF SELLA TURCICA |
HYPOPHYSEAL FOSSA | CCONTAINST PITUITARY GLAND |
GREATER WINGS | LATERALLY FROM BODY |
LESSER WINGS | SMALLER THAN GREATER WINGSL RIDGE OF BONE ANTERIOR AND SUPERIOR TO GREATER WINGS |
PTERYGOID PROCESSES | JUT OUT IN INFERIOR ANTERIOR VIEW |
ETHMOID BONE | ANTERIOR PART OF CRANIAL FLOOR BETWEEN 2 ORBITS; ANTERIOR TO SPENOID BONE AND POSTERIOR TO NASAL BONES. SUPPORTING STRUCTURE OF NASAL CAVITY |