BONES OF THE SKULL

-Cranial bone that forms forehead, superior part of eye orbits & the floor of the anterior cranial fossa -Eye orbit is the bony sockets that surround the eyeball -The frontal sinuses are houses within the anterior portion of the frontal bone

Bilateral bones form the superior (roof) and lateral portions of cranium ƒ parietal means “wall”.

-Bilateral bones that help to form the lower side (inferolateral) portions of the cranium. -Several markings including that the external auditory meatus (canal), part of the zygomatic process, the styloid process, mastoid process jugular foramen, & the carotid canal

Cranial bone the forms the back (posterior) and most of the base of the skull. Important structures include the jugular foramen, occipital condyles and the external occipital protuberance

Cranial bone that is bat-shaped or butterfly shaped bone. The sphenoid bone articulates with all other cranial bones. sphen means “wedge shaped”. Sphenoid sinus is in this bone Important structures include the Sella Turcica, Optic Foramen, and the carotid canal.

-Cranial bone that forms part of the anterior cranial fossa, part of the nasal septum and the nasal cavity. -The ethmoid bone also forms the medial wall of the eye orbit. -Ethmoid sinus is located within this bone -Important structures on the ethmoid bone include the crista galli, cribriform foramina, superior and middle nasal conchae

means “Turkish saddle” ƒ located on the superior surface of the sphenoid bone. ƒ The “seat of the saddle” houses the pituitary gland.

-Means “rooster’s comb” and is a short finger like projection. -Projects superior from midline of ethmoid bone Attaches to the dura mater (outer most layer of the connective tissue surrounding the brain) and helps secure the brain within the skull.

Plates on either side of the base of crista galli. Contains olfactory foramina for olfactory nerves to pass through

Opening through which the internal carotid artery passes into the cranial cavity. ƒ

Openings at the base of the lesser wings of the sphenoid bone and is anterior to sella turcica. Optic nerve (cranial nerve II) passes through here.

-means “large hole” -Located at the base of the occipital bone allows for the spinal cord to pass through.

This is a large opening near the foramen magnum and is located on the dense part of the temporal bone. ƒ-The jugular vein and three cranial nerves pass through this opening.

Condyles are rounded surfaces in a joint. ƒ The occipital condyles are bilateral to the foramen magnum. ƒ Articulate with the atlas as in nodding head to indicate “yes”

Needle like projection on the temporal bone ƒ Provides attachment for several neck and tongue muscles

Located behind the ear ƒ Is the insertion point for the sternocleidomastoid muscle, along with other neck muscles

bump at back of occipital bone

coronal means “crown”. This suture is between frontal and parietal bones

sagittal means “arrow”. This suture is between the parietal bones

oid” means “shaped like”. This suture is named the lambdoid because it looks like the Greek letter lambda which looks like this: ʄ ƒ It is located between the occipital and parietal bones

Facial bones that articulates with all other facial bones (except the mandible) ƒ Holds upper teeth and forms parts of the palate, nasal cavity, and floor of the eye sockets ƒ Houses the largest sinus – the maxillary sinus ƒ Forms anterior of hard palate ƒ Also referred to as the maxillary bones

Forms a portion of the medial eye orbit ƒ Lacrimal refers to tear ƒ Lacrimal sac is housed within the lacrimal fossa

Form high part of cheek and the lateral part of floor of eye orbit ƒ Commonly referred to as the cheek bone ƒ Important structures include the zygomatic arch consists of processes from temporal and zygomatic bones

POSTERIOR OF HARD PALATE