Term
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Definition
| suture extending across the skull, between the frontal and parietal bones |
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Term
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Definition
| extends from the front to the back of the skull, between paired parietal bones |
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Term
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Definition
| Located between occipital bone and paired parietal bones |
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Term
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Definition
| composed of the orbital plates of surrounding bones |
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Term
| Orbital Wall: FRONTAL BONE |
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Definition
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Term
| Orbital Wall: ETHMOID BONE |
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Definition
| greatest portion of medial wall |
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Term
| Orbital Wall: LACRIMAL BONE |
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Definition
| anterior medial corner of the orbit |
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Term
| Orbital Wall: Orbital surfaces of MAXILLA |
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Definition
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Term
| Orbital Wall: Zygomatic bone |
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Definition
| Anterior portion of lateral wall |
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Term
| Orbital wall: Greater wing on Spehnoid bone |
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Definition
| posterior portion of lateral wall |
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Term
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Definition
| composed of the lesser wing of the sphenoid bone (forming the base) and palatine bone (a small inferior portion) |
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Term
| What is the opening in the orbital apex? Where does it lie? |
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Definition
| Optic Canal. Lies between the two roots of the lesser wing of the sphenoid bone |
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Term
| What optic nerve passes through optic canal to reach the eyeball? |
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Definition
| Second Cranial Nerve= Optic Nerve |
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Term
| What artery passes through the canal to reach the eye? |
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Definition
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Term
| Where is the Superior orbital fissure located? |
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Definition
| Lateral to optic canal, between the greater and lesser wings of the sphenoid bone |
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Term
| What nerves pass through superior orbital fissure? |
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Definition
3rd- oculomotor nerve
4th- Trochlear nerve
5th- ophthalmic nerve from Trigeminal
6th- abducent nerve |
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Term
| Where is the inferior orbital fissure located? |
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Definition
| between the greater wing of the sphenoid bone and the maxilla |
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Term
| What does the inferior orbital fissure connect? |
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Definition
| The orbit with the infratemporal and pterygopalatine fossae |
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Term
| What nerves branch from the inferior orbital fissure? |
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Definition
| Infraorbital and zygomatic nerves (branches of the maxillary nerve) 5th cranial nerve |
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Term
| What artery/veins passes through inferior orbital fissure? |
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Definition
| Infraorbital artery/ophthalmic vein to join the pterygoid plexus of veins |
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Term
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Definition
| midpoint landmark, located at the junction of the frontal and nasal bones |
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Term
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Definition
| anterior opening of the nasal cavity (large and triangular) |
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Term
| How is the bridge of the nose formed? |
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Definition
| formed from the paired nasal bones. |
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Term
| How are the lateral bounderies of the nasal cavity formed? |
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Definition
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Term
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Definition
| Three projecting structures that extend inward from the maxilla creating the lateral walls of the nasal cavity |
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Term
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Definition
| vertical portion of the nasal cavity that divides the nasal cavity into two portions |
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Term
| What is the anterior portion of the nasal septum formed by? |
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Definition
| nasal septal cartilage inferiorly and the perpendicular plate of the ethmoid bone superiorly |
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Term
| What is the posterior portion of the nasal septum formed by? |
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Definition
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Term
| On the lateral external surface of the skull are 2 separate parallel ridges crossing both the frontal and parietal bones. What are their names? |
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Definition
Superior ridge- superior temporal line
inferior ridge- inferior temporal line |
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Term
| What is the superior boundary of the temporal fossa? What muscle attaches there? |
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Definition
| Inferior temporal line. Temporalis muscle attaches there. |
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Term
| Where is the squamosal suture located? |
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Definition
| Between the temporal and parietal bones |
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Term
| What is the temporal fossa formed by and what does it contain? |
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Definition
| Formed by several bones of the skull and contains the body of the temporalis muscle. |
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Term
| What is inferior to the temporalis fossa? |
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Definition
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Term
| What is deeper to the infratemporal fossa, which is also harder to see? |
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Definition
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Term
| How is the zygomatic arch formed? |
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Definition
| By the union of the broad temporal process of the zygomatic bone and the slender zygomatic process of the temporal bone. |
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Term
| What bones is the temporozygomatic suture located between? |
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Definition
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Term
| Zygomatic arch serves as the origin for the masseter muscle |
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Definition
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Term
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Definition
| MOVEABLE articulation between the temporal bone and the mandible |
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Term
| How is the hard palate formed? |
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Definition
| Formed by the 2 palatine processes of the maxillae and the two horizontal plates of the palatine bones |
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Term
| What borders the hard palate? |
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Definition
| The alveolar process of the maxilla and its maxillary teeth |
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Term
| What two sutures are present on the hard palate? |
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Definition
| Median palatine suture and transverse palatine suture. |
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Term
| How is the median palatine suture formed? |
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Definition
| It is a midline articulation between the two palatine processes of the maxilla anteriorly, and the two horizontal plates of the palatine bones posteriorly. |
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Term
| How is the transverse palatine suture formed? |
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Definition
| It is an articulation between the two palatine processes of the maxillae and the horizontal plates of the palatine bones. |
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Term
| The hard palate forms the floor of the nasal cavity, as well as the roof of the mouth. |
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Definition
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Term
| The posterior edge of the hard palate forms the inferior border of what structure? |
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Definition
| Posterior nasal apertures or chonchae |
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Term
| The superior border of each aperture is formed by which structure? |
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Definition
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Term
| Near the superior border of each posterior nasal aperture is what structure? |
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Definition
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Term
| The pterygoid canal extends to open into the pterygoplatine fossa. What structure does it cary? |
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Definition
| Pterygoid nerve and and blood vessels |
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Term
| The lateral borders of the posterior nasal apertures are formed on each side by what structure? |
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Definition
| Pterygoid process of sphenoid bone |
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Term
| Each pterygoid process consists of what structure? |
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Definition
| Medial pterygoid plate and lateral pterygoid plate |
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Term
| The depression between the medial and lateral plates is called what? |
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Definition
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Term
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Definition
| inferior portion of the medial plate of the pterygoid process |
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Term
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Definition
| larger anterior oval opening on the spenoid bone |
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Term
| What travels through the foramen ovale? |
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Definition
| The mandibular division of the 5th cranial nerve or trigeminal nerve. |
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Term
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Definition
| smaller and more posterior opening |
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Term
| What travels through the foramen spinosum? |
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Definition
| Middle meningeal artery into the cranial cavity |
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Term
| The large foramen lacerum is on the external surface of the skull |
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Definition
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Term
| What is located posterolateral to the foramen lacerum? |
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Definition
| Opening in the petrous portion of the temporal bone, the carotid canal |
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Term
| What does the carotid canal carry? |
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Definition
| The internal carotid artery and sympathetic carotid plexus. |
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Term
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Definition
| lateral and posterior to the carotid canal |
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Term
| What is posterior to the styloid process? |
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Definition
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Term
| What passes through stylomastoid foramen? |
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Definition
| 7th cranial nerve- Facial nerve exits from the skull to the face |
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Term
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Definition
| medial to the styloid process |
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Term
| What passes through the jugular foramen? |
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Definition
| Internal jugular vein and 3 cranial nerves. 9th- glosso-pharyngeal, 10th- Vagus, 11th- accessory nerve |
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Term
| Largest opening on the inferior view is what structure? |
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Definition
| Foramen Magnum of the occipital bone |
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Term
| What passes through foramen magnum? |
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Definition
| Spinal cord, vertebral arteries, 11th cranial nerve- accessory nerve |
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Term
| What nerve is associated with cribiform plate? |
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Definition
| 1st cranial- olfactory nerve |
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Term
| What nerve is associated with foramen rotundum? |
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Definition
| Maxillary division of 5th cranial nerve or trigeminal nerve |
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Term
| What nerve is associated with Hypolossal canal? |
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Definition
| 12th cranial nerve- Hypoglossal nerve |
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Term
| What nerve is associated with internal acoustic meatus? |
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Definition
7th cranial- facial nerve
8th cranial- vestibulocochlear nerve |
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