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43 terms

Skull

• Classification and division of bones of the skull • Characteristic features of bones of the skull
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Vault
Which part of the cranium makes up the superior, lateral, posterior walls of the skull?
Base
Which part of the cranium contains the floor of the cranial cavity?
Cranial cavity
Which cavity is enclosed by the cranium and contains the brain?
Sagittal suture
Which main suture is located where the parietal bones articulate with each other?
Coronal suture
Which main suture is located where the parietal bones meet the frontal bone?
Lamboid suture
Which main suture is located where the parietal bones meet the occipital bone?
Squamous suture
Which main suture is located where the parietal bones meet the sphenoid and temporal bones?
Occipitomastoid suture
There are 2 small additional sutures. The sphenoparietal suture and the _______________ ______
Temporal bones
Which paired bones form the infero-lateral part of the skull?
Parietal bones
Apart from the temporal bones, what are the other paired bones in the skull?
Mandibular fossa
Which fossa is oval shaped and meets the conyle of the mandible to form the temperomandibular joint?
Tympanic region
Which region of the temporal bones surround the external auditory meatus (EAMs)?
Styloid process
Which needle like process lies below the EAMs?
Mastoid process
Which process contains mastoid air cells?
Stylomastoid foramen
Which foramen allows cranial nerve 7 to leave the skull?
Petrous part
Which part of the temporal bones contains the arcuate eminence?
Carotid canal
Which canal transmits the 2 internal carotid arteries into the cranial cavity?
Jugular foramen
Which foramen allows the passage of the internal jugular vein and cranial nerves 9, 10 and 11?
Frontal bones
Which bone contains the supraorbital margins?
Superior orbital foramina
Which foramina allows the supraorbital artery and nerve to pass to the forehead?
Glabella
What is the name of the smooth portion between the orbits?
Anterior cranial fossa
Which cranial fossa supports the frontal lobes of the brain?
true
The frontal bone articulates with the sphenoid bone- true or false?
occipital bone
Which bone forms the skulls posterior wall and base?
lateral part
Which part of the occipital bone contains the occipital condyles?
basilar part
which part of the occipital bone contains the basilar artery?
Foramen magnum
What is the name of the large opening at the base of the cranium through which the spinal cord passes?
occipital condyles
Which condyles articulate with cervical vertebrae 1
Internal occipital crest
What is the name of the ridge which extends inferiorly from internal occipital protuberance and allows for attachment of the dura mater?
dura mater
What is the name of the outer layer of the meninges?
Posterior cranial fossa
Which cranial fossa protects the cerebellum of the brain?
false
The occipital bone articulates with the ethmoid bone- true or false?
sphenoid bone
Which bone is butterfly shaped and articulates with all the other cranial bones?
hypophyseal fossa
What is the name of the 'seat on the saddle' of the sella turcica where the pituitary gland is located?,
lesser wing of sphenoid
What is the name of the projection of the sphenoid bone that forms the posterior border of the anterior cranial fossa?
pterygoid processes
Which two bony processes descend from the body of the sphenoid bone and anchor the chewing muscles?
optic foramina
Which foramina of the sphenoid bone allows cranial nerve 2 to pass to the eyes?
optic groove
Which groove allows cranial nerves 3, 4 and 5 to pass to the eyes to control the eye movements?
ethmoid bone
Which perpendicular plate separates the nasal cavities and orbits (between the sphenoid and nasal bones)?
paired cribiform plates
which paired plates have olfactory foramina to allow the olfactory fibres to pass to the brain?
crista galli
vertical projection of the ethmoid bone allows attachment of the dura mater?
meninges
what is the collective name of the three membranes that cover the brain and spinal cord. Consisting of - the dura mater, pia mater, and arachnoid mater?
perpendicular plate
which part of the ethmoid bone forms part of the nasal septum?