Skull Vault Flashcards
(22 cards)
what bones and sutures are visible from the norma verticalis view
bones - parietal, frontal and occipital
sutures - sagittal, coronal, and partially lambdoid
what bones are fused at the coronal suture
frontal and parietal
what bones are fused at the sagittal suture
parietal right and left
what bones are fused at the lambdoid suture
occipital and parietal
what bones are fused at the metopic suture
right and left frontal bones
what is the bregma
highest point of skull, where coronal and sagittal sutures meet
what is a suture
fibrous joint between bones
what is the anterior fontanelle and why is it useful
area in foetus where bones will fuse, soft until then, diamond shaped opening, closes at 18 months - 2 years
what attaches to the external occipital protuberence
muscles of neck
what can be seen in norma occipitalis
occipital bone, parietal and mastoid process, lambdoid and sagittal suture
what bones make up norma lateralis
parietal, frontal, temporal, occipital, sphenoid - can also see mandible and maxilla
name the parts of temporal bone
squamous, mastoid, zygomatic, tempanic plate and styloid process
what are the lines on the temporal bone and what are they for
superior temporal line - fascia attaches here
inferior temporal line - temporalis muscle attaches here
what is the pterion and why is it important
where frontal, parietal, sphenoid and temporal bones meet, middle meningeal artery runs here - thin part of bone
can get a blow to the head here - cause the middle meningeal artery to burst - cause an extra dural haemorrage
how many cervical vertebrae are there
7
what is C1 called, and what features does it have that is different to typical C
atlas, has no vertebral body - anterior arch of atlas instead, has a larger vertebral foramen, oval shaped facets for occipital bone to sit on
What is C2 called and what features does it have that is different to typical c
axis, has a large odontoid process, dens process, flat facets and small vertebral foramen
what passes through the vertebral foramen
vertebral artery, except c7 has a costal cartilage
what joint is present in the vertebral discs
fibrocartilage joint between discs, between superior and inferior articular facets - synovial joint, at risk of osteoarthritis
what lies on the pedicle
the nerve corresponding to that vertebrae - c1 nerve travels over atlas pedicle
how does c7 differ from the other vertebrae
spinous process is not bifid, vertebral artery does not travel through here
why is a fracture at glabella significant
olfactory nerves gather here, can have a dripping nose after trauma - need to gather sample and test for carbohydrates - would be present in mucous, but not CSF. An portal of exit for CSF but also entry for bacteria - possible to get meningitis. Cranial cavity has been breached.
