Anatomy of SOLs Flashcards
layers of the scalp
SCALP:
- Skin
- Connective Tissue
- Aponeurosis
- Loose Connective Tissue
- Pericranium
name the thinnest part of the skull
pterion
what artery runs deep to the pterion
middle meningeal artery
- fracture to pterion can cause intra-cranial bleed
name the layers of the meninges
Dura
Arachnoid
Pia
nerve supply to the dura
CN V
what is the diaphragm sellae
part of dura that forms roof over the pituitary fossa
features of the arachnoid layer
has granulations that reabsorb CSF
which meningeal layer is in contact with the brain
Pia
what is the tentorium cerebelli
sheet of dura that ‘tents’ over the cerebellum
what is the falx cerebri
dura that separates the 2 cerebral hemispheres
where is CSF produced
choroid plexus of lateral + 3rd ventricles
where is the subarachnoid space
between arachnoid + Pia mater
- completely surrounds brain + spinal cord
- ends at S2
what connects 3rd + 4th ventricle
cerebral aqueduct
what connects 3rd + lateral ventricle
foramina of monroe
what is an extradural bleed between
bone + dura
- e.g. ruptured middle meningeal artery through pterion trauma
what is a subdural bleed between
dura + arachnoid
- e.g. torn cerebral veins through fall in elderly
what is a subarachnoid bleed
bleeding into CSF
- e.g. ruptured circle of willis
where is the problem in expressive aphasia
Brocca’s area in frontal lobe
where is the problem in receptive aphasia
Wernicke’s area in temporal lobe
role of frontal lobe
memory
behaviour / personality
movement - pre central gyrus
role of parietal lobe
sensory cortex - post central gyrus
body orientation
where is the primary motor cortex located
pre central gyrus in the frontal lobe
where is the primary sensory cortex located
post central gyrus in parietal lobe
what is the superior temporal gyrus responsible for
reception + processing of sound
where is the superior temporal gyrus located
temporal lobe
what separates the frontal + parietal lobes
central sulcus
what separates the frontal + parietal lobes from the temporal lobe
lateral sulcus
what embryological structure does the cerebrum develop from
prosencephalon
