Osteology Flashcards
what are the sutures of the skull
Coronal (frontal and parietal)
Sagittal (both parietals)
Lambdoidal (parietal and occipital)
Squamous (temportal and parietal)
Ossification of the skull begins when
7-8 week (embryo)
The ethmoid bone is made up of what superiorly and inferiorly
sup- Crista galli
inf- cribriform plate
the maxillary bone is made up of what
hard palate, palatine and orbital processes
the sphenoid is mad up of what
sella turcica, foramen ovale, rotundum, lacerum, spinosum and more
the Orbit of the eye is made up of what bones
Sphenoid, Frontal, Zygomatic, Palatine, Ethmoid, Lacrimal, Maxillary
(some funny zebras play easy listening music)
the mastoid is made from what bone
temporal
the vertebral column begins ossification when
7-8 weeks (embryo)
when are the three primary ossification center of the vertebral column completed by
3-6 yrs old
where are the three primary ossification centers of the vertebral spine
one on the body (centrum)
and one more for EACH of the vertebral arches (becomes lamina and pedicles)
when are the five secondary ossification centers of the vertebral columns completed by
age 25
where are the five secondary ossification centers of the vertebral column
one at the tip of spinous
two TVPs
Two annular ring epiphyses (superior and inferior aspect of body)
what is unique about the lumbar spine and ossification centers
they have two more than the other sections
one for each of the mamillary processes
at age three how many teeth do you have
20
how many teeth do adults have
32 teeth
from top to bottom what are the layers of the teeth
Enamel then dentin then Pulp (nerves and vessels) then Cementum the Root
What type of bone are the ribs and sternum
flat bones
do the ribs directly attach to the sternum
no they dont they connect by costal cartilage
how many ribs are there
12 pairs
what are the typical ribs
ribs 3-9
What are the atypical ribs
ribs 1, 2, 11, 12
why is rib one atypical
it is the shortest, costochondral joint articulates Manubrium, scalene tubercle location, and support the subclavian vessels
why is the 2nd rib atypical
it is thinner, 2x the length of the first and has the serratus anterior tuberosity
why are the 11th and 12th ribs atypical
they are short have no nek or tubercles, floaters
