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Download Ativity 8 - PCC - Portland Community College
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Exercise 7 Axial Skeleton Portland Community College BI 231 Bone Landmarks • All bones possess distinctive landmarks that are designed for specific functions. • Review table 7.1 Axial Skeleton • • • • Skull Spine Thoracic Cage Hyoid bone Supraorbital ridge Frontal Bone Frontal Bone Zygomatic Bone Temporal Process Zygomatic Arch Maxilla Hard Palate Facial Bones Mandible Coronoid Process Mandibular Condyle Alveolar Process Ramus Angle Mental Foramen Body Facial Bones Inferior Nasal Conchae Vomer Middle Nasal Conchae (Ethmoid) Perpendicular Plate (Ethmoid) Ethmoid Bone Middle Nasal Conchae Perpendicular Plate Ethmoid Bone Cristae Galli Cribriform Plate Perpendicular Plate Ethmoid Bone Crista Galli Perpendicular Plate Orbit Coronal Suture Between the Parietal bones and the Frontal Bone Parietal Bone Temporal Bone Occipital Bone Frontal Bone Squamous Suture Between the Parietal bone and the Temporal Bone Parietal Bone Temporal Bone Occipital Bone Frontal Bone Lambdoid Suture Between the Parietal bones and the Occipital Bone Parietal Bone Temporal Bone Occipital Bone Frontal Bone Temporal Bone External Acoustic Meatus Zygomatic Arch Mastoid Process Mandibular fossa Styloid Process Temporal Bone Temporal Bone Occipital Bone Parietal Bone Parietal Bone Sagittal Suture Between the Right and Left Parietal bones Occipital Bone Parietal Bone (Right) Parietal Bone (Left) Frontal Bone Occipital Bone Occipital Condyles Foramen Magnum External occipital protuberance Palatine Bone Vomer Temporal Bone Carotid Canal Jugular Foramen Sphenoid Bone Pterygoid Process Sphenoidal Sinus Cranium Floor Anterior Cranial Fossa Middle Cranial Fossa Posterior Cranial Fossa Frontal Bone Frontal Sinus Parietal Bone Parietal Bone Temporal Bone Temporal Bone Temporal Bone Mandible Mylohyoid Line Mandibular Foramen Sphenoid Bone Lesser Wing Greater Wing Sella Turcica Sphenoid Bone Hypophyseal Fossa Dorsum Sella Sphenoid Bone Lesser Wing Greater Wing Pterygoid Process Lateral Pterygoid Plate Medial Pterygoid Plate Ethmoid Air C Sinuses Frontal Sphenoidal Maxillary Fetal Skull Superior View Fetal Skull Wormian (Sutural) Bones Small islands of bone that fill gaps in sutures. Present in varying amounts Cervical Spine • 7 Vertebra • C1-C7 • Concave Posterior Thoracic Spine • • • • 12 Vertebra T1-T12 Convex Posterior Attach to the ribs Lumbar Spine • 5 Vertebra • L1-L5 • Concave Posterior Sacral Spine • 5 Fused Vertebra • “Sacrum” Coccyx • 4 Fused Vertebra Sacrum 5 Fused Vertebrae Sacrum Sacral Foramina Sacrum Sacral Promontory Typical structure of vertebra Intervertebral Foraminae Intervertebral Disk Annulus Fibrosus (Fibrocartilage) Nucleus Pulposus Cervical Vertebrae (C3-C7) Vertebral Foramen BODY Cervical Vertebrae (C3-C7) Transverse Processes Transverse Foramen Cervical Vertebrae C1: Atlas Superior Articular Facet Cervical Vertebrae C2: Axis Odontoid Process (Dens) Cervical Vertebrae C1 & C2 Joined Together Cervical Vertebrae (C3-C7) Bifid Spinous Process Cervical Vertebrae (C3-C7) Superior Articular Process Superior Articular Facet Cervical Vertebrae (C3-C7) Vertebral Arch Thoracic Vertebrae Spinous Process Thoracic Vertebrae Costal Facets on the Transverse Process (for rib attachment) Lumbar Vertebrae BODY Sacroiliac Joints Coccyx 4 Rudimentary Vertebrae Hyoid Bone Greater Horn Lesser Horn BODY Sternum Manubrium Sternal Angle Body Xiphoid Process Ribs 1-7: True Ribs Ribs 8-10: False Ribs Ribs 11 & 12: Floating Ribs Costovertebral Angle Ribs Ribs Attached to Thoracic Vertebrae The End
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