Cranial Bones-Anatomy
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| show | Frontal Squama; Forehead; Vault
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| The horizontal portion of the frontal bone forms what? | show 🗑
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| show | Frontal Eminence
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| The arched ridges of the frontal squama that correspond to the position of the eyebrows is called the ______________ arches. | show 🗑
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| show | Supraorbital Margins; Supraorbital Foramen
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| show | Glabella
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| The point at which the frontal squama articulates with the greater wing of the sphenoid bone is called the ________________ suture. | show 🗑
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| show | Frontonasal suture
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| show | Nasion
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| show | Parietal, Sphenoid and ethmoid
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| What separates the orbital plates of the horizontal portion of the frontal bone? | show 🗑
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| The ethmoidal notch receives what part of the ethmoid bone? | show 🗑
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| The anterior portion of the ethmoidal notch of the frontal bone is a small projection directed inferiorly and is the superiormost component of the nasal septum called the _________ __________. | show 🗑
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| What does the posterior portion of the orbital plate of the frontal bone articulate with? | show 🗑
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| The small cube shaped bone that forms part of the cranial floor: | show 🗑
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| The 2 light, spongy lateral masses of the ethmoid are called the ____________. | show 🗑
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| show | Cribiform Plate
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| show | Olfactory nerves
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| A thick conical projection on the anterior portion of the ethmoid that projects superiorly along the midline of the bone is called the ___________ ________. | show 🗑
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| What does the Crista Galli serve as an attachment for? | show 🗑
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| show | A fold of dura mater (outer membrane of 3 membranes that cover the brain and spinal cord) that separates the cerebellar hemispheres.
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| The vertical portion of the ethmoid is called what? | show 🗑
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| show | Septum
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| show | Ethmoidal sinuses or air cells
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| show | 3; Anterior, Middle, & Posterior Ethmoidal Air Cells
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| show | Orbits; Nasal
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| Projecting inferiorly from each medial labyrinth wall of the ethmoid are 2 thin, scroll-shaped processes called what? | show 🗑
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| show | Frontal and Sphenoid Cranial bones
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| The 2 parietal bones are what shape? | show 🗑
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| show | Sagittal Suture
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| The prominent bulge on each parietal bone at the central-superior portion where the width of the head should be measured is called the ____________ ___________. | show 🗑
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| The Parietal bone articulates with which cranial bones? | show 🗑
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| This cranial bone is an irregular wedge shaped bone resembling a bat with extended wings. | show 🗑
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| Where is the sphenoid bone situated in relation to the cranium? | show 🗑
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| show | Pterygoid Processes
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| The body of the sphenoid bone contains 2 ____________ which are incompletely separated by a median septum. | show 🗑
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| show | Nasal Cavity
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| What is the deep depression on the superior surface of the sphenoid and what does it protect? | show 🗑
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| Where exactly does the Sella turcica lie? | show 🗑
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| show | Anteriorly- Tuberculum Sellae; Posteriorly- Dorsum Sallea
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| The processes on the Tuberculum and Dorsum Sallae are called: | show 🗑
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| The slanted portion of bone posterior and inferior from the Dorsum Sallea which is continuous with the basilar portion of the occipital bone is called the _____________. | show 🗑
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| The Clivus supports what? | show 🗑
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| On each side of the sella turcica is a groove called the ___________ _________ which hold what? | show 🗑
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| show | The Optic Groove
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| The lesser wings of the sphenoid form the posteromedial portion of the roofs of the ___________, the posterior portion of the anterior _____________ fossa and the upper margin of the ___________ ____________ fissures and optic canals. | show 🗑
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| The medial ends of the posterior portion of the lesser wings of the sphenoid form the ______________ ___________ processes. | show 🗑
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| The 3 openings on the greater wings of the sphenoid for the passage of nerves and blood vessels which are subject to radiologic investigation are: | show 🗑
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| The processes that arise from the lateral portions of the inferior surface of the body of the sphenoid and the medial inferior surface of the lesser wings are called: | show 🗑
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| show | the medial and lateral Pterygoid Lamine
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| The inferior extremity of the medial lamina of the Pterygoid process has an elongated hook-shaped process called the ____________ __________. | show 🗑
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| show | Medial laminae of the Ptyeroid process due to the Pterygoid Hamulus
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| The Pterygoid processes articulate with the palatine bones anteriorly and the wings of the vomer where they enter into the formation of the ____________ _________. | show 🗑
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| show | All 7 other cranial bones.
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| What are the 4 parts to the occipital bone? | show 🗑
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| show | Inferior portion of the Medulla Oblongatta
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| What prominent process on the Occipital bone lies midway between the summit of the bone and the foramen magnum? | show 🗑
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| Another term for the External Occipital Protuberance: | show 🗑
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| show | Internal Occipital Protuberance
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| show | Atlas of the C-Spine
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| What is the articulation between the Occipital condyles and the Atlas of the C-Spine termed? | show 🗑
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| show | Occipitoatlantal Joints
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| Where are the Hypoglossal Canals found on the Occipital bone? | show 🗑
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| show | Jugular Foramen; Jugular Vein for blood drainage from the brain and 3 cranial nerves.
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| The basilar portion of the occipital bone joins the body of the sphenoid bone at the ___________ _________ of the sphenoid. This junction is called the __________. | show 🗑
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| show | 2 Parietal, 2 Temporal, the Sphenoid and C-1 (Atlas)
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| show | Squamous portion; Tympanic portion; Styloid process; Zygomatic process; Petromastoid portion for Hearing & Balance
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| show | Zygomatic; Zygomatic arch
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| show | Articular Tubercle; Mandibular
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| show | Temporomandibular Joint (TMJ)
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| The EAM is on what portion of the Temporal bone? | show 🗑
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| show | Styloid Process
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| The 1st air cell of the mastoid portion of the temporal bone situated at the upper anterior portion is called the __________ ___________. | show 🗑
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| The thickest, densest portion of bone in the cranium is __________ ____________. (often called the __________ _________) | show 🗑
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| show | Greater wing of the sphenoid and the Occipital; Body of the sphenoid
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| show | The Carotid canal on the inferior portion of the Petrous Pyramid
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| The upper border of the petrous pyramid called the __________ __________ corresponds to what external landmark? | show 🗑
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| show | Parietal, Occipital, Sphenoid and Zygomatic bones
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| Which bones contain air sinuses? | show 🗑
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| show | Temporal Bone
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| show | Hearing and balance
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| show | Tympanic; Tympanic; Ossicles
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| The passage in the middle ear that communicates with the nasopharynx and equalizes air pressure in the middle ear is the _____________ __________. | show 🗑
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| show | Inner ear
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| show | Maxilla
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| show | Mandible
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| The small bone located at the base of the tongue is the __________. | show 🗑
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| The petrous pyramid projects anteriorly and medially at an angle of ________ degrees for the typical skull called a _________________ skull. | show 🗑
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| show | Brachycephalic; 54 degrees
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| The skull type that is narrow from side to side, long from front to back and deep from vertex to base is a ______________ skull with a typical petrous pyramid angle of ______ degrees. | show 🗑
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| What 2 bones comprise the roof of the mouth? | show 🗑
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| The TMJ is what kind of joint? | show 🗑
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| show | Lacrimal Foramen; Lacrimal bones
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| show | Foramen Lacerum
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| show | Spinosum, Ovale, Rotundum
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| show | Optic Foramen
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| show | Jugular Foramen
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| Each bony orbit is composed of _______ cranial bones and _______ facial bones. | show 🗑
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| show | Pituitary
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| The bones that make up the cranial floor: | show 🗑
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| How many bones are in the cranium? | show 🗑
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| show | 22
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| show | Lambdoidal
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| The point where the coronal and sagittal sutures meet: | show 🗑
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| The suture that lies between the parietal and temporal bones? | show 🗑
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| The point where the Parietal bone, Squamosal suture and the greater wing of the Sphenoid bone: | show 🗑
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| show | Occipital, Parietal and Mastoid portion of the temporal bone
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| The Lambda is the junction of what? | show 🗑
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