A&P Facial and Skull Bones

Frontal Bone

Forms the forehead and the upper part of the eye sockets.

Anterior Cranial Fossa

The front depression in the skull base that houses the

frontal lobes.

Frontal Sinus

Air-filled cavity within the frontal bone

Orbit

The bony cavity that contains the eyeball.

Parietal Bone

Forms the sides and roof of the cranial cavity.

Coronal + Lamboidal Suture

Coronal: Joint between the frontal and parietal bones.

Lamboidal: Joint between the parietal bones and the occipital bone.

Sagittal Suture

Joint between the two parietal bones

Squamous Suture

Joint between the parietal and temporal bones in

fetal skulls.

Anterior Fontanelles

Soft spot on a baby's skull where the bones haven't fused yet.

Posterior Fontanelles

Smaller soft spot at the back of a baby's skull.

Occipital Bone

Forms the back and base of the skull.

Occipital Condyles

Rounded projections that articulate with the first cervical vertebra.

Temporal Bone

Forms the sides and base of the skull.

Squamous Region

Flat part of the temporal bone.

Tympanic Region

Surrounds the external auditory meatus.

Mastoid Region

Contains air cells and is located behind the ear.

Petrous Region

Dense part of the temporal bone that houses the inner ear.

Mandibular Fossa

Depression that articulates with the mandible

External auditory meatus

Ear canal opening in the temporal bone.

Zygomatic process

Projection that forms part of the cheekbone.

Styloid process

Needle-like projection for muscle attachment.

Mastoid process

Rounded projection behind the ear.

Jugular foramen

Opening for the jugular vein and cranial nerves.

Internal auditory meatus

Canal for nerves of hearing and balance.

Middle cranial fossa

Central depression in the skull base.

Posterior cranial fossa

Back depression in the skull base.

Zygomatic Arch

Cheekbone formed by temporal and zygomatic bones.

Sphenoid

Butterfly-shaped bone at the base of the skull.

Sella turcica

Depression that holds the pituitary gland.

Lesser Wings

Smaller projections of the sphenoid bone.

Greater Wings

Larger projections of the sphenoid bone.

Superior Orbital Fissure

Opening for nerves and vessels in the orbit.

Sphenoid Sinus

Air cavity within the sphenoid bone.

Ethmoid

Bone that forms part of the nasal cavity and orbit.

Crista galli

Vertical projection for brain membrane attachment.

Perpendicular Plate

Forms part of the nasal septum.

Cribiform plates

Perforated plates for olfactory nerves.

Olfactory Foramina

Tiny holes for smell nerves.

Superior Nasal Concha

Upper curved bone in the nasal cavity.

Middle Nasal Concha

Middle curved bone in the nasal cavity.

Ethmoid Air Cells

Small cavities within the ethmoid bone

Mandible

Lower jaw bone.

Mandible Body

Main horizontal portion of the mandible.

Mandible Ramus

Vertical part of the mandible.

Mandibular Condyle

Rounded end that articulates with the skull.

Coronoid Process

Projection for muscle attachment

Maxilla

Upper jaw bone.

Inferior Orbital Fissure

Opening below the orbit.

Maxillary sinus

Air cavity in the maxilla.

Hard palate

Bony roof of the mouth

Palatine bone

Forms part of the hard palate.

Zygomatic bone

Cheekbone.

Lacrimal bone

Small bone forming part of the eye socket.

Nasal bone

Forms the bridge of the nose

Inferior nasal concha

Lower curved bone in the nasal cavity

Vomer

Forms part of the nasal septum.

Hyoid Bone

U-shaped bone in the neck that supports the tongue.

Auditory Ossicles

Small bones in the middle ear.