bones Flashcards
form the middle segment of the cranial dome
Parietal Bones
are at the sides of the cranium, extending inward to form part of the cranial floor
Temporal Bones
forms the anterior third of the cranial dome
Frontal Bones
forms the posterior portion of the cranial dome
Occipital Bones
form a large portion of the side of the head
Parietal & Temporal Bones
immediately anterior to the temporal bone.
single bone that extends completely across the skull
resembles a butterfly
Sphenoid Bone
joins the parietal and temporal bones
Squamous Suture
joins the parietal bone to the frontal bone
Coronal Suture
joined the parietal bone to the occipital bone
Lambdoid Suture
joins the two parietal bones
Sagittal Suture
A prominent feature of the temporal bone
a canal that enables sound waves to reach the eardrum.
External Auditory Canal
can be seen and felt as a prominent lump just posterior to the ear.
Mastoid process of temporal bone
a structure in the central region of the sphenoid bone resembling a saddle, which contains the pituitary gland.
Sella Turcica
forms the middle portion of the anterior cranial floor, extending inferiorly between the eye orbits to also form the roof of the nasal cavity
Ethmoid Bone
forms the upper jaw
support the face from the eyes down to the mouth, across the front of the cheek
contain the superior set of teeth
Maxilla
cheekbone
Anterior to the sphenoid bone
Forms the upper lateral corner of a cheek
Zygomatic
Join together at the midline to form the posterior third of the hard palate (the floor of the nasal cavity and the roof of the mouth
Palatine
increase the surface area in the nasal cavity.
The increased surface area of the overlying epithelium facilitates moistening and
warming of the air inhaled through the nose.
Nasal Conchae
projections from the ethmoid bone.
Middle & Superior conchae
consists of joined processes of the temporal and zygomatic bones
forms a bridge across the side of the face and provides a major attachment site for a muscle moving the mandible.
Zygomatic Arch
On the medial margin of an eye orbit just above the opening of the nasolacrimal canal
Lacrimal
forms the bridge of the nose
Forming the superior margin of the nasal opening
Nasal
Pair of thin, curved bones
Project medially from the lateral walls of the nasal cavity , curving toward the nasal floor
Inferior nasal conchae / turbinate bones
lower jaw bone
oddly shaped bone forming the lower part of the face
contains the inferior set of teeth
Mandible
thin flat bone forming the inferior and posterior part of the nasal septum, that divides the nasal cavity into right and left halves
Vomer
decrease the weight of the skull and act as resonating chambers during voice production.
sinuses are named for the bones where they are located and include the frontal, maxillary, ethmoidal, and sphenoidal sinuses.
Paranasal Sinuses
The depression where the mandible articulates with the temporal bone
anterior to the mastoid process
Mandibular Fossa
cone-shaped fossae
protection of the eyes and attachment points for the muscles that move the eyes
Orbits
they provide openings through which nerves and blood vessels communicate with the orbit or pass through the face
Inferior and Superior Orbital Fissures
passes from the orbit into the nasal cavity
it contains a duct that carries tears from the eyes to the nasal cavity
Nasolacrimal Canal
divides the nasal cavity into right and left halves
nasal septum
an unpaired, U-shaped bone.
not part of the skull and has no direct bony attachment to the skull.
muscles and ligaments attach it to the skull.
provides an attachment for some tongue muscles, and it is an attachment point for important neck muscles that elevate the larynx (voicebox) during speech or swallowing
Hyoid bone
projects from the inferior surface of the temporal bone.
serves as an anchorage for muscles associated with the tongue and pharynx.
Styloid Process
The triangular anterior process of the mandibular ramus, giving attachment to the temporal muscle.
Coronoid Process
an opening for the mandibular nerve to the lower jaw
Foramen Ovale
an opening for the middle meningeal artery, which brings blood to the dura mater.
Foramen Spinosum
opening in the skull, through which the spinal cord joins the brain
Foramen Magnum
contains the lower cranial nerves and major vascular structures
Jugular Foramen
opening through which the optic nerve runs back into the brain and the large ophthalmic artery enters the orbit
Optic Foramen
smooth points of articulation between the skull and vertebral column
Occipital Condyles
forms the roof of the mouth
floor of nasal cavity
Hard Palate
extend posteriorly from the hard, or bony, palate
Soft Palate
