1 / 16

The Skull

The Skull. It consists of flat and irregular bones Divides into: Cranial bones which encase the brain Facial bones which form the bones of the face The following must be identified : Nasion Inion Bregma Lambda External occipital protuberance Parietal eminence

feng
Download Presentation

The Skull

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Skull • It consists of flat and irregular bones • Divides into: Cranial bones which encase the brain Facial bones which form the bones of the face • The following must be identified: Nasion Inion Bregma Lambda External occipital protuberance Parietal eminence Zygomatic arch

  2. The Skull • Facial bones include: (Viscerocranium) Maxilla Zygomatic Nazal Palatine Lacrimal Inferior concha Vomer Mandible • Cranial bones include: (Neurocranium) Frontal Ethmoid Sphenoidal Occipital Parietal Temporal

  3. The Skull • Frontal • Maxilla • Zygomatic • Nazal • Mandible • Lacrimal

  4. The Skull • Parietal • Temporal Squamous Mastoid Styloid Tympanic Petrous • Sphenoid Greater wing Lesser wing Pterygoid process Body • Occipital

  5. The Skull • Petrous part of temporal • Lesser wing of sphenoid • Body of sphenoid • Pterygoid process • Ethmoid bone Crista galli Cribriform plate Perpendicular plate • Vomer • Palatine bone

  6. Cranial Fossa • It is the cavity of the skull • Divides into: Anterior cranial fossa Middle cranial fossa Posterior cranial fossa

  7. Anterior Cranial Fossa • Formed of: Orbital plate of frontal bone Cribriform plate of ethmoid Crista galli Lesser wing of sphenoid • Occupies: Frontal lobe of the cerebrum Optic nerves Olfactory bulb and tract

  8. Middle Cranial Fossa • Formed of: Greater wing of sphenoid Body of sphenoid Squamous part of temporal bone Anterior part of petrous bone • It occupies: Temporal lobe of the cerebrum

  9. Posterior Cranial Fossa • Formed of: Sphenoid part of clivus Posterior part of petrous bone Occipital bone • It shows the following land marks: Groove for transverse sinus Groove for segmoid sinus Internal occipital protuberance • It occupies: Cerebellum Brain stem

  10. Base of The Skull • Most of the bones are seen in other views • Fracture base of the skull why?

  11. Foramina of the Skull • Foramina are found within the skull bones • They vary in size and shape • They transmit nerves, blood vessels and dura matter

  12. Foramina of the Skull

  13. Foramina of the Skull • Supraorbital • Infraorbital • Mental

  14. Sutures of the Skull • Sutures are fibrous joints articulating the skull bones • They include: Coronal Sagittal Lambdoid Pterion

  15. Skull Fontanel • Fontanels are spaces between some of the skull bones of infants • They permit easy growth of the brain • They permit overlapping of skull bones during labor • They are anterior, posterior, anterolateral, and postero- lateral • They close later in life at 6-18 months

  16. The Mandible • It is a flat bone • Identify the following: Head(condylar process) Mandibular notch Coronoid process Ramus Angle Body Mylohyoid line Submandibular fossa Digastric fossa Mandibular foramen Mental foramen

More Related