HEAD Flashcards
The following are contents of SUPERIOR ORBITAL FISSURE except:
A. Oculomotor (CN III)
B. Trochlear nerve (CN IV)
C. Abducens (CN VI)
D. Maxillary Nerve (CN II)
E. Ophthalmic nerve (CN V1)
D. Maxillary Nerve (CN II)
Superior Orbital Fissure - CN 1,3,4,6
The following are foramina of Middle Cranial Fossa EXCEPT:
A. Superior Orbital Fissure
B. Optic Canal
C. Foramen Cecum
D. Foramen Rotundum
B. Optic Canal (Anterior Cranial Fossa)
The following are foramina of posterior cranial fossa EXCEPT:
A. Jugular Foramen
B. Internal acoustic meatus
C. Foramen Magnum
D. Foramen Lacerum
D. Foramen Lacerum - Middle Cranual Fossa (between petrous part of temporal and sphenoid, where Internal Carotid Artery traverses)
Which of the following is an unpaired cranial bone?
A. Parietal
B. Maxilla
C. Sphenoid
D. Palatine
C. Sphenoid
CRANIAL BONE (8 bones)
Paired: Parietal, Temporal
Unpaired: Frontal, Occipital, Sphenoid, Ethmoid
The point of meeting and articulation of the parietal, temporal, occipital?
A. Bregma
B. Lambda
C. Asterion
D. Nasion
C. Asterion
Bregma - Coronal + Sagittal suture
Lambda - Lambdoid + Sagittal suture
Pterion - Frontal + Temporal + Parietal + Greater wing of the sphenoid
The anterior fontanelle is the future site of? It closes by 18 months old.
A. Lambda
B. Bregma
C. Nasion
D. Asterion
B. Bregma
Bregma - Bandang harap
Lambda - Likod
Provide the attachment for the Falx Cerebri
- FRONTAL Crest of the frontal bone
- CRISTA GALLI of the ethmoid bone
both provide attachment for the falx cerebri
Which of the following traverses in the styloid foramen?
A. Facial Nerve
B. Maxillary Nerve (V2)
C. Ophtalmic Nerve (V1)
D. Supraorbital nerve
A. Facial Nerve, Stylomastoid artery - contents of stylomastoid foramen
Damage to what fossa fracture results to anosmia, periorbial bruising (racoon eyes), and CSF leakage from the nose?
A. Maxillofacial Fracture
B. Temporral Fracture
C. Anterior Fossa Fracture
D. Posterior Fossa Fracture
C. Anterior Cranial Fossa
CN I - exits through the cribrigorm plate of the ethmoid
The following are NOT innervated by vagus nerve EXCEPT?
A. Hyoglossus
B. Styloglossus
C. Palatoglossus
D. Genioglossus
C. Palatoglossus - the only extrinsic muscle of the tongue innervated by vagus nerve
What venous blood sinus is formed by the union of inferior sagittal and great cerebral vein?
A. Sigmoid Sinus
B. Right transverse
C. Straight Sinus
D. Left transverse
C. Straight Sinus
What connects the cranial venous sinuses to the extracranial veins?
A. Dural venous sinus
B. Periosteum
C. Emissary Vein
D. Aponeurosis
C. Emissary Veins - helps also to keep pressure in sinuses constant, provides a route for intracranial spread of infection
The following does NOT extend through the formen magnum to become continous with the dura mater of the spinal cord EXCEPT
A. Endosteal layer
B. Meningeal layer
C. Periosteal layer
D. Arachnoid layer
B. Mengingeal layer - dura mater proper continous with dura of spinal cord through the foramen magnum
Dura Mater has only 2 layers - Endosteal layer and Meningeal layer; Endosteal layer is the periosteym covering the inner surface of the skull bones and doe s not extend through the foramen magnum.
The following describes Falx Cerebri EXCEPT:
A. It is a sickle-shaped fold extension of the dura mater
B. Its narrow anterior end is attached to the frontal crest and crista galli
C. It covers the upper surface of the cerebellum
D. It lies at the midline between two cerebral hemispheres
C. It covers the upper surface of the cerebellum
Tentorium cerebelli
- Crescent shaped
- Roof of posterior cranial fossa
- Covers the upper surface of the cerebellum
- Supports the occipital lobes of the cerebral hemisphere
Which of the following serves as roof of the sella turcica?
A. Falx Cerebelli
B. Tentorium Cerebelli
C. Falx Cerebri
D. Diaphragma Sella
D. Diaphragma Sella
- Small, Circular fold
- Roof for the sella turcia
