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Frontal Parietal Occipital Temporal 233 left Forehead: folds in to make part of eye orbit supraorbital notch/foramen- above eye: for nerves to face 232 left Behind frontal Form top sides of cranial cavity 233 right Back of skull/base of cranium Large opening in lower surface= foramen magnum Occiptal condyles- on either side of f.m. articulate with atlas Condylar canals- small foramens on either side of foramen magnum 233 right Superior nuchal linecurved ridge at back of occipital External occipital protuberance- middle of ridge where it comes to a point 232 right Joins parietal bone on side: contains external auditory meatus-leads to inner earbelow this is : Mastoid process –behind ear, attachment for neck muscles Styloid process- pointed – anchors muscles of tongue & pharynx Has zygomatic processjoins zygomatic bone, helps form prominence of cheek • Jugular foramen - Vein to brain Sagittal: separates left and right parietal bones Coronal: separates frontal from parietal bones (like coronal plane) Lambdoid: separates occipital from parietal bones 242 Has fontanels– fibrous membranes connecting the cranial bones = “soft spots” Enables head to pass through birth canal Allows rapid growth of brain Close/calcify as cranial bones grow 234 Between temporal and zygomatic bones; looks like a bat Greater wing: on each side, back wall of orbit Lesser wing: 2 inside, posterior roof of eye orbit 234 Pterygoid processes: plates that border back opening of nasal cavities 235 Anterior to sphenoidsmall ◦ Cribiform plate: roof of nasal cavity 237 top left Cheek bones ◦ Zygomatic arch= prominence that connects zygomatic to temporal bone Maxillae Lower face/upper jawparts of these form hard palate, Contain sockets of teeth ◦ Palatine processes form roof of mouth– if incomplete = cleft palate ◦ Infraorbital foramentransmits vessels and nerves 236 bottom Cleft palate Tissue of palate/lip do not join together properly during embryonic development in early pregnancy Cleft Lip 236 bottom 237 bottom right 2 bones form bridge of nose Gives shape to the nose Back of roof of mouth Irregular Lateral walls of nasal cavity 236 top Thin, flat, along midline within the nasal cavity Posterior part of septum Thin, delicate plates in nasal cavity 3 sets in each cavity: top, middle, bottom Make narrow passage airways to filter dust 237 bottom left Between ethmoid and maxilla Forms part of orbit (eye socket) Smallest bone of face Lacrimal fossa: hole that drains tear ducts 238 Mental foramen- opening dentists use to inject anesthetics Ramus- process that projects up from posterior of body Body- main part- forms chin Symphysis menti- ridge beneath teeth Mandibular foramen- inside of ramus process Orbit: eye socket Sinuses: mucous-lined, air-filled spaces Fontanelle: soft spots of baby’s skull