What are the two parts of the frontal bone?
The vertical aspect (forehead)
The horizontal aspect (roof of orbits)
Where is the ethmoid bone?
Between the eyes
What two vessels meet to form the straight sinus?
The inferior sagittal sinus and great cerebral vein/great vein of galen
Describe the course of the superficial temporal artery
Branches of the external carotid artery
Travels up the lateral aspect of the face, in front of the ear, towards the temple
Describe the arrangement of the LNs of the face?
They form an arch underneath the mandible and ear
Where is the mastoid process located on the temporal bone?
What is the general structure of the parietal bone?
Flat and rectangular - follows the structure of the brain
Where does the straight sinus run?
Along the meeting point of the tentorium cerebelli and falx cerebri
What holes does the middle cranial fossa have?
The crescent pattern:
- The superior orbital fossa
- The foramen rotunda
- The foramen ovale
- The foramen spinosum
- Optic canal
- Hypophysial fossa
What is trigeminal neuralgia characterised by?
Brief periods of pain in one of the divisions of the trigeminal nerve dermatome
What structures are run in/are located in the parotid gland?
External carotid artery
How does the layered structure of the face differ from that of the scalp?
There is no loose connective tissue layer
The aponeurosis layer is replaced by facial muscles
What do you need to know about the veins of the face?
They follow their arteries
What is the course of CN7 in the face?
It exits the stylomastoid foramen
Gives of the post. auricular nerve
Enters the parotid
Forms the parotid plexus aka pes anserinus
What is the shape and position of the petrous of the temporal bone?
Wedged shape forming a floor for the brain
What do the 5 terminal nerves of the parotid plexus do?
Supplies muscles of facial expression
Blood from where drains into the epidural space?
What are the processes of the temporal bone called?
Where does the middle meningeal artery lie in the skull?
Between the skull and dura
What supplies the dermatome in front of the ears?
The trigeminal nerves - three branches
- Opthalmic (forehead and eyes)
- Maxillary (in between nose and mouth)
- Mandibular (jaw line)
How can you tell the meningeal arteries?
They groove the skull vault
Describe the cross-sectional structure of the bones of the cranial?
Spongy bone sandwiched between two tables of compact bone
What holes does the posterior cranial fossa have?
The internal auditory (or acoustic) meatus
What separate the cortex and cerebellum laterally?
What are the facial branches of the internal carotid artery and where do they sit?
The supratrochlea above the trochlea
The supraorbital above the eyes
The Pterion is a landmark for which blood vessel?
The middle meningeal artery
What does the zygomatic process of the temporal bone articulate with?
Which dura septa lies between the two hemispheres?
Through which foramen does the middle meningeal artery enter the skull?
What is the function of the holes of the cribiform plates?
Nerves passage through them