Anatomy and Cell Biology 3319 Chapter Notes -Anterior Cranial Fossa, External Occipital Protuberance, Occipital Condyle

• School: Western University
• Department: Anatomy and Cell Biology
• Course: Anatomy and Cell Biology 3319
• Professor: guestlecture

Document Summary

Introduction to skeletal system & surface landmarks of skull. Coronal: running in the coronal plane, occurs anteriorly where the parietal bones meet the frontal bone. Sagittal: occurs where the right and left parietal bones meet superiorly in the midline of the cranium. Squamous: occurs where each parietal bone meets a temporal bone inferiorly, on each lateral aspect of skull. Lambdoid: occurs where parietal bones meet the occipital bone posteriorly: brain fits snugly into 3 cranial fossae: prominent bony ridges divide the cranial base. Forms most of the superior and lateral aspects of the skull. Forms the forehead, superior part of orbits, and most of the anterior cranial fossa; contains sinuses. Forms posterior aspect and most of the base of the skull. Supraorbital foamina (notches): allow the supraorbital arteries and nerves to pass. Occipital condyles: articulate with the atlas (first vertebra) External occipital protuberance and nuchal lines: sites of muscle attachment.