Introduction to the Skull and Cranium Flashcards
neurocranium paired
known as brain box
parietal bone
temportal bone
neurocranium unpaired
frontal
occipital
sphenoid
ethmoid
viscerocranium paired
facial skeleton
lacrimal bone
nasal bone
zygomatic bone
maxilla
inferior nasal concha
palatine bone
viscerocranium unpaired
facial skeleton
- mandible and vomer
name the 5 cavities on the anterior skull
2 orbital
2 nasal cavities
1 oral cavity
the glabella
smooth part of the forehead above and between the eyebrows
Superorbital notch (foramen)
foramen found above orbital
Alveolar process of maxilla
found in the gums
- holds the root of the teeth
infraorbital foramen of maxilla
on either side of the nose
Mental foramen of mandible
on either side of the chin
temporal fossa
the area on the side of the cranium from which the temporal muscle arises
Name the 3 sections of the cranial fossae
- anterior
- middle
- posterior
the _______ is found at the junction of the frontal, sphenoid, parietal and temportal bone
Pterion
- thinnest part on the lateral side of the skull
- easiest part to drill if there is a bleed in the skull
the _____________ is between the two parietal bones of the skull
sagittal suture
the ____________ is formed between the two parietal bones and the frontal bone
coronal suture
the ____________ connects the parietal bones with the occipital bone
lamboid suture
the {____________ is the junction between the coronal suture and the sagittal suture
bregma
the ____________ is the junction between the sagittal suture and the lambdoid suture
lambda
the ____________ the junction where the 2 frontal and 2 parietal bones meet. This remains soft until about _______
anterior fontanelle, 18m-2y
the ____________ is the junction of the 2 parietal bones and the occipital bone. This closes by the time the baby is _____
posterior fontanelle, 1-2m
____________ is a depression on the front of the maxillary bone above the incisor teeth.
incisive fossa
The ____________ and the ____________ form the hard palate
palatine bone and the maxilla
the ____________ is the posterior opening of the nasal cavity. It is seperated by the ____________
choanae. by the vomver
The ____________ is the small bony projection that serves as the origin for the TMJ ligament
articular tubercle
the ____________ an oval depression behind the anterior root of the zygomatic process of the temporal bone for the reception of the condyle of the mandible.
mandibular fossa
Cranial nerve CVII passes through the _______
Stylomastoid foramen
The ___________is a deep depression in the inferior part of the temporal bone at the base of the skull
jugular fossa
the ___________ articulate with the superior articular facets of the atlas (C1).
occipital condyles
what passes through the foramina of cribriform plate
olfactory nerve bundles
what passes through the optic canal?
optic nerve
ophthalmic artery
what passes through the superior orbital fissue?
oculomotor nerve
trochlear nerve
lacrimal, frontal and nasociliary of ophthalmic nerve
branches of ophthalmic nerve (V1)
abducent nerve
what passes through foramen rotundum
maxillary nerve (V2)
what passes through foramen ovale
mandibular nerve (V3)
what passes through foramen spinosum
middle meningeal artery and vein
what passes through carotid canal
internal carotid artery
what passes through the internal acoustic meatus
facial nerve (7)
vestibulocochlear nerve (8)
what passes through the jugular foramen
glossopharyngeal nerve (9)
vagus nerve (10)
Accessory nerve (11)
what passes through the hypoglossal canal
hypoglossal nerve (11)
what passes through foramen magnum
medulla oblongata
meninges
vertebral arteries
spinal roots of accessory nerves
