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56 Cards in this Set
- Front
- Back
Frontal squama:
|
– sac like plate forms the forehead.
– Gradually slopes inferiorly from the coronal suture on the top of the skull, then angles abruptly and become mostly vertical. |
|
Lacrimal fossa
|
– Shallow depression that houses the
lacrimal gland on the superior lateral surface of the orbits |
|
Supraorbital margin:
|
– frontal bone thickening superior to
the orbits – extends posteriorly to form the roof of the orbit, and part of the cranial floor cavity. |
|
Supraorbital foramen
|
– A passage for blood vessels
– Slightly medial to midline in the supraorbital margin. |
|
Frontal sinuses
|
– lie deep to the frontal squama.
– Appear after age 6, some people do not develop them |
|
Superior and inferior temporal
lines |
– attachment site of the temporalis
muscle |
|
Temporal Squama:
|
– Thin flat part of the
temporal bone forms the anterior and superior part of the temple. |
|
Zygomatic process:
|
– Projects from the inferior
portion of the temporal squama, and articulates with the temporal process of the zygomatic bone. |
|
Zygomatic arch:
|
– Formed from the
zygomatic process of the temporal bone and the temporal process of the zygomatic bone. |
|
Mandibular fossa:
|
– Located on the inferior
posterior surface of the zygomatic process – Articulates with the mandible |
|
Articular tubercle:
|
– Rounded elevation anterior
to the mandibular fossa – The mandibular fossa and articular tubercle articulate with the mandible to form Temporomandibular joint (TMJ) |
|
Mastoid:
|
– Located posterior and
inferior to the external auditory meatus – Contains several mastoid air cells in adults – Separated from the brain by thin bony partition. |
|
Mastoid process:
|
– Rounded projection of the mastoid, posterior to the external auditory meatus.
– Point of attachment for several neck muscles |
|
Temporal bone - Styloid process
|
– Projects inferiorly from the inferior surface of the temporal bone
– Point of attachment for muscles and ligaments of the tongue and neck |
|
Temporal bone - Internal auditory
meatus: |
– Opening through
which the facial and vestibulocochlear nerve pass |
|
Temporal bone - Foramen lacerum
|
– A slit between the
sphenoid bone and petrous portion of the temporal bone – Internal carotid artery passes through the anterior portion of the foramen lacerum – Auditory tube passes through the posterior portion of the foramen lacerum |
|
Temporal bone - Stylomastoid
foramen: |
– Between Styloid
process and mastoid process – Houses the facial artery |
|
Temporal bone - Jugular foramen
|
– Posterior to the
carotid foramen and anterior to the occipital bone – Passageway for the jugular vein |
|
Temporal bone - External auditory
meatus |
– On the lateral
surface, ends at the tympanic membrane |
|
Temporal bone - Petrous portion:
|
– Triangular shape,
located at the base of the skull between the sphenoid and occipital bones at the floor of the cranial cavity – Houses the internal and middle ear. – Contains the carotid canal through which the carotid |
|
Occipital bone - Foramen magnum
|
– In the inferior part of the
bone. – Contains medulla oblangata, vertebral and spinal arteries |
|
Occipital bone - Occipital condyles
|
– Oval processes with convex
surfaces on either side of the foramen magnum – Articulate with depression on the atlas, forming atlanto-occipital joint. |
|
Occipital bone - External occipital protuberance
|
– Midline prominent projection on the
posterior surface of the bone just above the foramen magnum |
|
Occipital bone - External occipital crest
|
– Begins at the external occipital
protuberance – Point of attachment for ligaments |
|
Occipital bone - Legamentum nuchae:
|
– Large fibrous elastic ligament.
– Extends from external Occipital protuberance to the 7th cervical vertebra; helps support the head |
|
Occipital bone - Superior and inferior nuchal lines:
|
– Two curved ridges extending
laterally from the protuberance and the crest – Serve as areas of muscle attachment. |
|
Occipital bone - Hypoglossal canals:
|
– Begin at the lateral base of
each occipital condyle and end on the inner surface next to the foramen magnum – house the hypoglossal nerve |
|
Occipital bone - Jugular foramen:
|
– Lies between the occipital and
the temporal bones on either side of the skull – Houses the internal jugular vein |
|
Sphenoid bone - Sphenoid body:
|
– cube-like medial
portion between the ethmoid and occipital bone. – Contains sphenoid sinus, inferior to the sella turcica, which drains into the nasal cavity. |
|
Sphenoid bone - Sella turcica:
|
– Saddle-shaped
structure on the superior surface of the sphenoid body. – The anterior part is a ridge called tuberculum sellae – The saddle depression called hypophyseal fossa that contain the pituitary gland – The back part is a ridge called dorsum sallae. |
|
Sphenoid bone - Greater wings
|
• project laterally from
the body and form the anterolateral floor of the cranium • Form part of the lateral walls of the skull; viewed externally just anterior to the temporal bone. • Contribute to the posterior wall of the orbit |
|
Sphenoid bone - Lesser wings:
|
• anterior and superior to
to the greater wings • Form part of the cranium floor and the posterior part of the orbits |
|
Sphenoid bone - Optic foramen
|
– between the body and
lesser wing anterior to sella turcica |
|
Sphenoid bone - Superior orbital
fissure: |
– Triangular slit lateral to
the body between the greater and lesser wings – Can be seen in the anterior view of the orbit. |
|
Sphenoid bone - Pterygoid processes
|
– Project inferiorly
from the points where the body and greater wings unite – Form the lateral posterior region of the nasal cavity – Muscles move the mandible and soft palate attach to the processes |
|
Sphenoid bone - Foramen ovale:
|
– in the greater wing at
the base of the lateral pterygoid process. |
|
Sphenoid bone - Foramen lacerum:
|
– Bounded anteriorly
by sphenoid bone and medially by sphenoid and occipital bones. – Covered by fibrocartilage in live subject. |
|
Sphenoid bone - Foramen rotundum:
|
– Located at the
junction of the anterior and medial parts of Sphenoid bone. |
|
Ethmoid bone - Perpendicular plate
|
– Forms the superior portion of
the nasal septum |
|
Ethmoid bone - Cribriform plate:
|
– Lies in the anterior floor of
the cranium and forms the roof of the basal cavity – Contains olfactory foramina, from which olfactory nerve passes |
|
Ethmoid bone - Lateral masses:
|
– Compose most of the wall
between the nasal cavity and the orbits. – Contain air spaces (cells) that collectively form the ethmoid sinuses. |
|
Ethmoid bone - Crista galli:
|
– triangular process projecting
upward from the cribriform plate – attachment point for falx cerebri |
|
Ethmoid bone - superior and middle conchae
|
– Delicate projections of the
lateral mass, lateral to the nasal septum |
|
Maxillae - alveolar process
|
- Border the mouth
- Contains alveoli of the teeth |
|
Maxillae - Palatine process
|
- a horizontal projection forms the
anterior ¾ of the hard palate |
|
Maxillae - Infraorbital foramen:
|
- opening below the orbit
|
|
Maxillae - Inferior orbital fissure:
|
- located between the sphenoid greater
wing and the maxilla |
|
Maxillae - Nasolacrimal canal
|
- Formed by the maxillary and the
lacrimal bones |
|
Zygomatic bone - Temporal process
|
curves posteriorly to meet the
zygomatic process |
|
Zygomatic bone - Zygomatic facial foramen
|
– On the anterior surface
of the zygomatic bone – Carry sensory nerves |
|
Mandible - mental foramen
|
- Located below the second
mandibular premolar tooth. |
|
Mandible - mandibular foramen
|
- on the medial surface of each
ramus; the beginning of mandibular canal that houses the alveolar nerves, blood vessels pass through the canal. |
|
Coronal suture
|
unites frontal
bone and both parietal bones |
|
Sagittal suture
|
unites the two
parietal bones |
|
Lambdoid suture
|
unites both
parietal bones to the occipital bone |
|
Squamous suture
|
unites the
parietal and temporal bones on the lateral aspect on each side of the skull |