Neuroanatomy Flashcards
Cranial Nerve 1
- Olfactory
- smell
Cranial Nerve 2
- Optic
- Vision
Cranial nerve 3
- Oculomotor
- eye movement
Cranial nerve 4
- Trochlear
- eye movement
Cranial nerve 5
- Trigeminal
- masticatory movements and facial sensation
Cranial nerve 6
- Abducens
- eye movement
Cranial nerve 7
- Facial
- Facial movement and sensation
Cranial nerve 8
- Auditory vestibular
- hearing and balance
Cranial nerve 9
- Glossopharyngeal
- tongue and pharynx movement and sensation
Cranial nerve 10
- Vagus
- heart, blood vessels, viscera, movement of larynx and pharynx
Cranial nerve 11
- spinal accessory
- neck muscles
Cranial nerve 12
- Hypoglossal
- tongue muscles
Basic functions of the brain
- creating a sensory reality
- integrating information
- producing behaviour
Brain anatomical orientations
- superior/dorsal ^ vs inferior/ventral
- anterior/rostral vs posterior/caudal
- at brainstem rotates 90 degrees (dorsal is now towards back of head)
The layers of the coverings of the brain
- scalp
- skull
- dura mater
- arachnoid mater
- pia mater
White matter
- areas of the nervous system rich in fat-sheathed neural axons
Gray matter
- areas of the nervous system predominately composed of cell bodies and blood vessels
Lobes
- frontal, parietal, occipital, temporal
Planes of view
- horizontal
- sagittal
- coronal
Brodmann area 17
- primary visual
Brodmann area 18, 19 20, 21, 37
- secondary vision
Brodmann area 41
- primary audition
Brodmann area 22, 42
- secondary audition
Brodmann area 1, 2, 3
- primary body sensation
Brodmann area 5, 7
- secondary body sensation
Brodmann area 7, 22, 37, 39, 40
- tertiary sensation
Brodmanm area 4
- primary motor
Brodmann area 6
- secondary motor
Brodmann area 8
- eye movement (motor)
Brodmann area 44
- speech (motor)
Brodmann area 9, 10, 11, 45, 46, 47
- tertiary motor
Anterior circulation
- bilaterally paired internal carotid arteries
- aorta brachiocephalic artery -> common carotid artery -> internal carotid artery (-> brain through carotid foramen) or external carotid artery
Posterior circulation
- bilaterally paired vertebral arteries
- aorta brachiocephalic artery -> subclavian arteries -> vertebral arteries -> basilar artery (brain)
Regions supplied by ACA (anterior cerebral artery)
- frontal lobe
- anterior parietal lobe
Arteries branching from ACA
- callosomarginal artery
- pericallosal artery
Regions supplied by the PCA (posterior cerebral artery)
- inferior and medial temporal lobe
- occipital lobe
Regions supplied by the MCA (middle cerebral artery)
- lateral frontal lobe (by MCA superior division cortical branches)
- lateral temporal lobe and parts of the parietal lobe (by MCA inferior division cortical branches)
Which arteries close the circle of willis?
- anterior communicating artery (AComm)
- posterior communicating artery (PComm)
What areas does the anterior choroidal artery feed?
- GP, putamen, internal capsule thalamus
What arteries are derived from the internal carotid artery?
- anterior choroidal artery, middle cerebral artery stem (M1), lenticulostriate arteries
What areas does the recurrent artery of Heubner feed?
- caudate putamen, GP internal capsule
What are the main venous drainages of the hemispheres?
- superficial veins: superior sagittal sinus, cavernous sinus
- internal jugular vein
- deep veins: great vein of Galen