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Skull Bones

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the human skull is made up of eight cranial bones that surround and protect the brain and 14 facial bones that form the underlying structure of the face and support for the teeth with the exception of the mandible the bones of the skull articulate with each other through joints known as sutures throughout the skull holes known as foramina serve as passageways for blood vessels and nerves on the surface of the skull in case the brain protects sensory organs and service attachment sites for the muscles of the head and neck these bones include the occipital bone temporal bones and the Frog as well as the nasal Bones the zygomatic Bones the maxilla and the mandible other bones become more visible only when looking inside the skull the sphenoid bone makes up anterior base of the cranium it is a butterfly shaped bone with a central body and two pair of laterally projecting Wings These Wings Forum portions of the orbit the body the sphenoid features of Depression known as the sella turcica which houses the pituitary gland located between the orbits the ethmoid bone makes up a portion of the cranial floor and also the roof of the nasal cavity and inferior projection the perpendicular plate of the ethmoid bone forms part of the nasal septum the Crista Galli projection purely from the ethmoid bone and serves as the attachment point for the falx cerebri a dural fold extending ladder Lee from the Crista Galli is the cribriform plate a perforated area through which the olfactory nerves pass the two L-shaped Palatine bones form the posterior third of the hard palate part of the nasal cavity and a portion of the orbit the small thin lacrimal bones make up the anterior portion of the medial wall of each orbit a Groove known as the lacrimal Groove helps to form the nasolacrimal canal which contains a duct that allows tears to travel to the nasal cavity the vomer is an elongated plow shaped bone that forms the inferior and posterior part of the nasal septum the internal and external skull bones articulate precisely forming an intricate straw perfectly suited to its functions

Uploaded by Elsa Flores.

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