The Skull Flashcards
Sagittal Suture
attaches the two parietal bones
Coronal Suture
attaches frontal and parietal bones
Squamosal Suture
attach the temporal bones to parietals on the sides of the skull
Lambdoidal Suture
triangular suture, attach occipital to parietals
Wormian Bones
AKA sutural bones, gaps between sutures that are filled with bone
Anterior/frontal fontanel
top soft spot
Posterior/occipital fontanel
back of head soft spot
Anterolateral/spenoidal fontanels
temple soft spots
Posterolateral/mastoidal fontanels
back of ear soft spots
Paranasal sinuses
drain into nasal cavity
frontal sinus
hole in forehead above eyes
sphenoidal sinus
behind eyeballs
ethmoidal sinus
in between eyes
maxillary sinus
big space below eyes
mastoid sinus
hollow behind ear, makes skull lighter and is good for sound reasonance
blood sinus sulci
grooves on the inside of the cranium created by veins called sinuses
superior sagittal sulcus
groove on inside middle top of skull (brain drain vein)
transverse sulci
split off from superior sagittal sulcus at back of skull
sigmoid sulci
connect to transverse sulci, s-shaped grooves on inside bottom of skull
frontal bone structures
superciliary arch, glabella, supraorbital margin, supraorbital notch
superciliary arch
eyebrow bumps
glabella
bump where eyebrows meet
supraorbital margin
top edge of eye socket
supraorbital notch
notch in inner corner of top of eye socket
foramen magnum
big hole at bottom of skull
occipital condyles
two bumps on outside bottom of skull to the sides of the foramen magnum
hypoglossal canal
holes through the occipital condyles
external occipital protruberance
bump at base of skull
superior nuchal line
line running through base of skull
inferior nuchal line
smaller line below superior nuchal line
the two nuchal lines attach
neck muscles
squamous temporal portion
flat outside of temporal bones at the sides of the heads
zygomatic process
ridge on side of skull
mastoid temporal portion
space behind and including the ear
mastoid process
bump behind ear
petrous temporal portion
behind and underneath the ear
external auditory meatus
ear hole
mandibular fossa
socket for jaw
styloid process
spike under the ear for tongue muscles to attach to
stylomastoid foramen
hole between styloid and mastoid processes
jugular fossa
groove medial to styloid process
jugular foramen
hold behind jugular fossa, mouth of shark
carotid canal
round hold in front of jugular foramen
internal auditory meatus
hole on inside of skull in groove, shark eye
sinus
open space in an organ or bone for the collection of air or fluid
cranium
dome where brain lives
face
all the crap in front
articulation
when bones come together
skull grows around
the brain
condyles allow
rocking motion
bumps are for
muscle attachment
sphenoid bone
locks all bones together
greater sphenoid wings
big dips (inside bottom skull)
lesser sphenoid wings
top flat ridge, inside skull
sella turcica
consists of chiasmatic groove and hypophyseal fossa
chiasmatic groove
bat forehead
hypophyseal fossa
divot below chiasmatic groove, bat mouth
optic foramen
gremlin eyes
superior orbital fissure
teardrop holes at attachment of bat wings
pterygoid processes
medial and lateral underskull ridges
foramen rotundum
round hole under superior orbital fissure
foramen ovale
oval hold below foramen rotundum
horizontal/ cribriform plate
divots to either side of crista galli
crista galli
ridge on front inside of skull
perpendicular plate
top part of septum
vomer
bottom part of septum
lateral masses
rectangle on medial inside of eye socket
inferior turbinates
small curves at bottom of nasal cavity
middle turbinates
top curves you can see in nasal cavity
superior turbinates
very small turbinates in the very back of nasal cavity
