Question

Anatomy Tutorial: Skeletal Anatomy

Answer 1

\({\bf{Superior~View:}}\) this one is the easiest, since we only cover sutures and major bones

Answer 2

the suture on the superior surface of the head is the coronal suture (remember, corona = crown) which sections the frontal bone off.

Answer 3

then splitting the skull into its right and left parietal bones is the sagittal suture (remember, a sagittal plane separates something into L and R halves)

Answer 4

the occipital bone (the occipital region of the brain, if you remember from basic psych, controlls vision) is in the posterior region of the skull

the suture that separates this part is the lambdoid suture (something to do with lambda, don't recall atm)

then peeking out from the anterior region are the nasal bones (the nose)

Answer 5

\({\bf{Lateral~View:}}\) this one is the next easiest, my recommendation would be to start w/ the major bones and identify the smaller structures within them



this looks nothing like an actual human skull im so sorry

Answer 6

anyway we can label the ones we already did from last time (namely the frontal, parietal, and occipital)

Answer 7

on the side of the skull are the temporal bones (which appear as the center because we are viewing it laterally)

the cheekbones are the zygomatic bones (if somebody smiles wide and has fairly slim cheecks these will be prominent)

in between these two is the sphenoid bone

Answer 8

inside the orbital cavity (where the eye would go) are two bones, the ethmoid and lacrimal bone

Answer 9

add the nasal bone, which is where the nose would be, duh, and the maxilla, which is behind the nose + upper lip

then finally the jawbone , known as the mandible, is underneath them

Answer 10

of course, the skull has other projections/processes besides the flat bones

there's two in the zygomatic/temporal area

one is the temporal process of the zygomatic bone and the other is the zygomatic process of the temporal bone (it seems confusing at first but it's clear if you have a godo foundation of where the zygomatic bone and temporal bones are)

Answer 11

speaking of the temporal bone, there are three structures you'll (I'll) need to know for the exam

the external acoustic meatus (acoustic = relating to sound, so this is the earhole basically)
the mastoid (which are those rounded projections behind your ears)
and the styloid, which is a sharp spiny projection behind the jaw

Answer 12

we will now add three sutures, two of which are familiar from the superior view, one of which is new, the squamous suture which separates the parietal and occipital

Answer 13

finally we have two lines (remember, lines are long, somewhat thin projections) on the parietal bone, the superior and inferior temporal lines (which are fairly easy to remember given their names)

Answer 14

anyway this is getting long so I'm going to go through the inferior views (which are arguably much harder) in the next tut.