Skeletal (including skull) Flashcards
Which of the following traverses the anatomic structure at the tip of the arrow?
ICA
Internal carotid venous plexus
Sympathetic plexus
(Carotid canal contents)
Which of the following structures passes through the opening at the base of the skull indicated by the arrow in the image shown?
Trigeminal nerve (foramen ovale)
Which of the following structures is indicated by the arrow at C2 in the image shown?
Pars interarticularis
Which of the following structures is at greatest risk for injury during drilling of the optic canal during pterional craniotomy?
Optic nerve (blindness from heat or direct damage)
Which of the following spinopelvic parameters remains constant before and after spinal deformity surgery?
Pelvic incidence
Which of the following is the single most important biomechanically stabilizing soft tissue structure at the craniocervical junction?
Transverse ligament
Which of the following foramina is indicated by the arrow in the CT image?
Foramen ovale
Which of the following cervical vertebrae is the most common site for the entry of the vertebral artery into the vertebral foramen?
C6
Thoracic pedicle morphology studies consistently show the narrowest pedicle is most likely to be found at which of the following locations?
T4-T6
The transverse ligament inserts into which of the following?
C1 lateral mass
The sagittal vertical axis is the horizontal distance measured from a C7 vertical plumb line and what other structure?
Superior posterior endplate of S1
The roof of dorello’s canal is formed by which of the following?
Gruber’s ligament (petrosphenoidal ligament)
The pterygopalatine fossa contains which of the following nerves?
Pterygopalatine ganglion
Maxillary nerve of trigeminal (V2)
Vidian nerve
Sphenopalatine n
Greater palatine n
The optic strut separates the optic canal from which of the following structures?
Superior orbital fissure
The majority of the orbital floor is formed by the roof of which of the following sinuses?
Maxillary
Foramen spinosum lies in which of the following positions relative to the foramen ovale?
Posterolateral to foramen ovale
The dens most typically becomes fused to the body of the axis at which of the following ages?
?6-9 years
The arcuate eminence serves as an important landmark during extradural anterior petrosectomy. It indicates the location of which of the following structures?
Superior semicircular canal
In the dissection of a right mastoidectomy shown, the short process of the incus is highlighted in yellow. When viewed through the mastoid antrum during the performance of a mastoidectomy, this anatomical structure is used to help identify the location of which of the following structures?
Facial nerve
During a transnasal endoscopic approach to the pituitary gland, the roof of the sphenoid sinus is visualized. The lateral optico-cartoid recess corresponds to which of the following intracranial bony structures?
Optic strut base (the clinoid segment of the ICA is located medially)
A photo of the view through a left-sided pterional approach for a recurrent, previously coiled, SCA aneurysm is shown. The working corridor to the coil mass in the aneurysm is via the oculomotor-carotid cistern. Which of the following structures is denoted by the asterisk?
Posterior (?anterior) clinoid
… posterior clinoid was keyword on ABNS site
A left pterional craniotomy is performed to remove an optic canal meningioma through a left subfrontal approach. A photograph of the left optic nerve after the roof of the left optic canal has been drilled away and the meningioma removed is shown. Continued drilling in the area of the black star would enter into which of the following spaces?
Sphenoid sinus
A 65-yo man is evaluated because of the sudden onset of severe headache. Physical examination shows no abnormalities. A cerebral angio is performed. Which of the following is the most likely explanation for the radiolucencies indicated by the arrows on the scout view?
Parietal foramina
A 49-yo man undergoes an endoscopic, endonasal approach for resection of clinically nonfunctioning pituitary macroadenoma. The 0-degree endoscope view shown is within the right nostril at the time of the initial approach, prior to any manipulation of tissue. Which of the following structure is indicated by the arrow?
?Choana
The anatomical landmark for the lateral border of the lateral recess in the lumbar spine is which of the following?
Pedicle
The anterolateral border of the cervical neural foramen is formed by which of the following structures?
?Intervertebral disc
Which of the following craniocervical junction ligaments or membranes are indicated by the arrows in the figure shown?
Apical ligament
