Head #1 Flashcards
what are the two parts of the cranium
neurocranium and viscerocranium
what are the two cranial bones with bilateral pairs
temporal and parietal
what kind of bones primarily form the calvaria
flat bones
bones forming the basicranium are primarily what
irregular bones
what is the irregular bone that makes a relativley minor midline contribution to the neocranium but is actually part of the VISCEROCRANIUM
Ethmoid bone
what are the only bones that are united by hyaline cartilage ( synchondroses) in childhood
sphenoid and occipital
what is known as the facial skeleton
viscerocranium
the viscerocranium consists of bones surronding what three things
- nose
- mouth
- orbits
how many irregular bones are in the viscerocranium
15
what are the three singular bones in the viscerocranium that are in the midline
- manduble
- ethmoid
- vomer
what are the 6 bones that are bilateral pairs in the viscerocranium
- maxilla
- inferior nasal conchae
- zygomatic
- palatine
- nasal
- lacrimal
what is one of the most movable joints and can also be easily damaged
the mandible
what is cool about several of the cranial bones and allows them to not weigh alot
that they are pneumatizied, they have air cells
what is the inferior margin of the orbit supposed to line up with in a horizontal plane in anatomical postion
the superior margin of the external acoustic opening
what is laterally connected to the frontal bone
zygomatic bone
what is medially connected to the frontal bone
nasal bone
what is the part of the frontal bone that is flat called
squamous
what bone forms the orbital roof
frontal bone
what is the frontal suture called
metopic suture
in what percent of people can the metopic suture persist
1%
where the frontal bone and the nasal bone intersect it is called what
nasion
what is the depressed bridge area of the nose in some people
nasion
what is the ridge above the supraorbital margin
supercillary arch
internal carotid artery supplies what
inside the cranium
the supercillary arch is usually greater in who
males
gabella is bigger in who
men
what goes through the optic canal
the optic nerve
what bone form the prominent cheek bone
zygomatic bone
what are malar bones
cheek bones
what goes through the zygomaticofacial foramen
the zygomatic facial branch of the maxilary nerve which is a branch of V2
what is the aperture under the nasal bone the shape of
pear shaped
upper portion of nose is formed by… lower portion…
ethmoid
vomer
alveoli in the maxilla are what
tooth sockets
what are the only two bones that make the socket of the eye
zygmoatic bone and maxilla
what passes through the infraorbital foramen in the inferior part of each orbit
infraorbital nerve and vessels
what is the infraorbital nerve a branch of
V2 ( axillary branch)
supraorbital nerve is a branch of
V2
what unites the two maxilla in the median plane
inter maxillary suture