Cranium And The Brain Flashcards
Cranium: anatomy
Cranium:
1. Neurocranium: bony structural container for the brain, protection
- Calvaria
- base
2. Vicerocranium: bony structure to support visceral organs, boundaries
Mandible
Calvaria
Parietal, frontal, superior occipital, and temporal bone
Base
Inferior frontal, temporal, occipital, ethmoid, sphenoid
Sutures
Coronal, Sagittal, lambdoid, and squamous
* dura mater attachment sites inside cranium
Coronal suture
Frontal and parietal - “crown”
Sagittal suture
Inter parietal bones
Lambdoid suture
Parietal and occipital - rainbow
Squamous suture
Parietal and temporal
Pterion
Weakest point of the Neurocranium
Artery: middle meningeal
*epidural hematoma
Pterion: sutures
Sphenosquamous suture
Sphenoparietal suture
Frontosphenoid suture
Cranial fossae: anterior
Frontal bone: frontal crest
Ethmoid bone: crista galli and cribriform plate
Sphenoid bone: lesser wing and anterior clinoid processes *optical canal
Cranial fossae: middle
Sphenoid bone: posterior clinoid process + hypophysial fossa (sella turcica) + greater wing + superior orbital fissure + coratid canal.
- Foramen : rotundum, ovale, spinosum, lacerum,
Temporal bone
Inferior parietal
Cranial fossae: posterior
Temporal bone: petrous part, internal acoustic medius, jugular foreman
Occipital bone: clivus, Internal occipital crest + protuberance, foremen magnum, hypoglossal canal
Inferior parietal bone
Occipital bone: external/inferior
Hypoglossal canal
Foremen magnum
Occipital condyles
External occipital protuberance
Sup/inf nuchal line
Sphenoid bone
Foremen spinosum
Foremen ovale
Medial / lateral pterygoid plates
Temporal bone: ext / inf
Mastoid process/notch
Styloid process
External acoustic medius
Mandibular fossa
Articular tubercle
Coratid canal
Jugular foremen
Stylomastoid foremen
Fissures of the brain
Longitudinal fissure: left and right hemisphere
Transverse fissure: occipital babe and cerebellum
Pterian bones
Frontal, parietal, spheroid, temporal
Telencephalon: neocortex/cerebrum lobes (6)
Frontal, parietal, temporal, occipital, lambic, and insular
Telencephalon: sulci and gyri
Central sulcus: precentral (somatic motor M1) and postcentral (somatic sensory S1)gyrus
Lateral sulcus: primary auditory cortex in temporal
Parietooccipital sulcus
Calcarine sulcus: primary visual cortex
Frontal lobe: function
Somatomotor (M1)
Parietal lobe: functions
Somatosensory (S1)
Temporal lobe: function
Audition (A1)
Occipital lobe: function
Vision (V1)