Axial Skeleton and Muscles Flashcards
Coronal suture
Between frontal and parietal bones - top of head
Frontal bone
Forehead bone on skull
Frontal sinus
Space in the frontal bone superior to eyebrows
Parietal bones
Top two sides of the skull. Two of them.
Sagittal suture
Separates left and right parietal bones
Middle meningeal artery impression
Impression where the arteries would be. Inside skull on lateral sides.
Temporal bones
Lateral sides. Behind ears. Two of them.
Squamosal suture (squamous suture)
Between temporal and parietal bones
External auditory meatus (external acoustic meatus)
Ear hole, by jaw
Mandibular fossa
Scoop in front of auditory meatus. Superior to meatus
Zygomatic process
Part of cheek but still part of temporal bone. Anterior.
Styloid process
Interior to meatus. Attachment for muscles of tongue, pharynx and hyoid. Long skinny stalactite bone.
Mastoid process
Bump behind ear. Contains air sinuses.
Jugular foramen
Between temporal and occipital bones, passageway for internal jugular vein and cranial nerves. Hole lateral to foramen magnum. Bottom of skull. Sort of under petrous part.
Petrous part
Ridge of bone surrounding meatus canal. Inside skull
Internal auditory meatus
Hole inside skull for ear
Occipital bone
Bottom portion of skull
Lambdoidal suture
Parietal meeting occipital
Foramen magnum
Big hole for spinal cord and spine
Occipital condyles
Smooth bumps by anterior side of magnum. Outside of occipital.
External occipital protuberance
Big bump on skull by base of skull/neck
Sphenoid bone
Looks like a butterfly. Back of the mouth. Middle of the skull
Greater wings of sphenoid
Large wings that make up part of eye sockets.
Lesser wings of sphenoid
Smaller wings still part of eye sockets. Don’t get confused with legs.
Optic foramen
Passageway for optic nerves and opthalmic artery. Hole under lesser wings.
Superior orbital fissure
Passageways for blood vessels and nerves of the orbit. Under lesser wings. Gash. Don’t get confused with optic foramen.
Inferior orbital fissure
Between sphenoid and maxillary bones.
Sella turcica
Saddle of scoop middle of bone behind nose.
Foramen rotundum
Passageway for cranial nerves. Round holes by nose.
Foramen spinosum
Passageway for middle meningeal artery and cranial nerves. Tiny holes by foramen ovale s.
Foramen ovale
Passageway for blood vessels and cranial nerves. Big oval holes on anterior side.
Foramen lacerum
Inferior to sella
Pterygoid processes
Legs of butterfly. Back of oral cavity.
Ethmoid bone
Hangs down into the nasal cavity. Anterior to the sphenoid bone