Title: neuro
1ShibsNeuroscience Lab Final Review As you
review the structures try to answer(1)
Function/Lesion(2) Input/Output (pathway) (3)
Neurotransmitter
2- Spinal Cord does not exist below L2!!! Do not say
that a sacral spinal cord section is below the
lumbar vertebral level that would be crazy - Apply the blood supply lecture to the
brainstem/cranial nerves/tracts - Knowing this pic and how to superimpose
- blood supply is
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6Notes on Auditory Cochlear
- You can see from the pathways that there is a
fibers running bilaterally, particularly after
info gets to the cochlear nucleus (both dorsal
and ventral travel bilaterally) - Hearing is bilateral so you usually dont show
symptoms unless you damage the cochlear nerve.
7Clinicals from the atlas on BALANCE
Vestibular(dont get the function of cochlear
and vestibular mixed up
- Damage to vestibular receptors commonly results
in - vertigo (i.e. BPPV)
- unsteady or ataxic gait
- tendency to fall to the lesioned side.
- Deficits seen in nerve or brainstem lesions
- Nystagmus
- Nausea/Vomiting
- Vertigo and gait problems
- Deficits seen in Multiple Sclerosis
- Internuclear opthalmoplegia or Nystagmus may be
seen - Indicates interruption of vestibular projections
to III, IV, VI via MLF - Deficit seen in vestibular schwannoma
- May have facial nerve palsy as well
(pontomedullary junction compressed)
8Visual Clinical Interlude
- Straight radiations in the parietal lobe lesion
causes contra-homonomous, lower-quadrantanopia. - Loop of Meyer in temporal lobe lesion causes
contra-homo-upper quadrantanopia. - If you lesion optic nerve, you get ipsilateral,
monocular scotoma. - If you bisect the optic chiasm, you get
bitemporal, hemianopia. - Optic tract lesion causes contra, homo,
hemianopia. - Trochlear nerve damage gives symptoms of vertical
diplopia when looking down. - Abducens nerve damage gives horizontal diplopia.
- Superior Colliculus damage gives loss of saccadic
eye movements. - Lateral geniculate nucleus lesion causes contra,
homo, hemianopia. - Lingual gyrus is site where loop of meyer ends.
- Occipital pole is responsible for macular
vision.
- Lesions of primary visual cortex PCA infarcts,
tumors, hemorrhage and trauma to occipital poles - Macular sparing due to relatively large
representation for its size. also b/c of
anastomosis?MCA and PCA provide collateral flow
of blood to the occipital pole?
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14Longitudinal Fissure
Superior Frontal Gyrus
Superior Frontal Sulcus
Middle Frontal Gyrus
Precentral Gyrus
Precentral Sulcus
Central Sulcus
Postcentral Gyrus
PostCentral Sulcus
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16Precentral Gyrus
Postcentral Gyrus
Central Sulcus
Middle Frontal Gyrus
Supramarginal Gyrus (BA 40)
Inferior Frontal Sulcus
Angular Gyrus (BA 39)
Pars opercularis
Pars orbitalis
Lateral Sulcus
Pars triangularis
Inferior Frontal Gyrus
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18Superior Temporal Gyrus
Superior Temporal Sulcus
Middle Temporal Gyrus
InferiorTemporal Gyrus
Lateral Sulcus
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20Cingulate Gyrus
Cingulate Sulcus
CC - Body
Marginal Sulcus
CC - Genu
CC - Splenium
Septum Pellucidum
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22Paracentral Lobule - anterior
Paracentral Lobule - posterior
Parieto-occipital Sulcus
Cuneus
Calcarine Sulcus
Lingual Gyrus
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24Optic chiasm
Parieto-occipital sulcus
Cuneus
Optic nerve
Lingual gyrus
Calcarine sulcus
25Macular sparing
- a phenomenon associated with lesions to the
primary visual cortex - visual information from the fovea goes to the
occipital pole of the primary visual cortex - it is thought that, due to anastomoses, the
occipital pole can be supplied by PCA or MCA - contralateral homonymous hemianopia with macular
sparing - contralateral superior/inferior quadrantanopia
with macular sparing
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27Cingulate Gyrus
Fornix
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29Cingulum Bundle
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31Gyrus Recti
Olfactory Bulb
Olfactory Tract
Uncus
Parahippocampal Gyrus
Cerebral Peduncles
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33Olfactory Bulb
Olfactory Tract
Orbital Gyri
Olfactory Trigone
Uncus
Parahippocampal Gyrus
Mammillary Body
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35Cerebral Peduncle
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37Hippocampus
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39Lateral Ventricle
3rd Ventricle
Cerebral Aqueduct
Interventricular Foramen (Foramen of Monroe)
4th Ventricle
Foramen of Megendie
Foramen of Luschka
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413rd Ventricle (space)
Cerebral Aqueduct (space)
4th Ventricle (space)
Interventricular Foramen (Foramen of Monroe)
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43Fornix
Anterior Commissure
Hypothalamus
Mammillary Body
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45Interthalamic adhesion
Thalamus
Hypothalamic sulcus
Habenula
Anterior commissure
Pineal gland
Posterior commissure
Lamina terminalis
Hypothalamus
Mammillary body
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47Stria Medullaris Thalami
Habenular Nuclei
48Neuroscience Lab 5 Coronal Axial
SectionsWelke, Ph.D.
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50Longitudinal fissure
Corpus callosum
Cingulate gyrus
Septum pellucidum
Corona radiata
Caudate nucleus
Lateral ventricle, anterior horn
Internal capsule, anterior limb
Putamen
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52Caudate nucleus
Cingulate gyrus
Internal capsule, anterior limb
Lateral ventricle, body
Putamen
Globus pallidus
External capsule
Extreme capsule
Insula
Claustrum
3rd ventricle
Hypothalamus
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54Amygdala
Hypothalamus
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56Caudate nucleus
Cingulate gyrus
Internal capsule, posterior limb
Septum pellucidum
Putamen
External capsule
Globus pallidus
Extreme capsule
Insula
Claustrum
Lateral ventricle, inferior horn
Anterior nucleus
Pons
Hypothalamus ??INCORRECT TAG? Should be
MAMMILLARY BODY
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58Fornix - Body
Anterior Nucleus of the Thalamus
Mammilothalamic Tract
Hippocampus
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60Caudate nucleus
Ventral anterior nucleus of the thalamus
Globus pallidus, external segment
Putamen
Globus pallidus, internal segment
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62Cingulate Gyrus
Cingulum Bundle
Nucleus Accumbens
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64Fornix - Columns
Anterior Commissure
Uncus
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66Dorsomedial Nucleus of the Thalamus
Fornix - Body
Hippocampus
67Lesions?
68Dorsomedial nucleus
Cingulate gyrus
Internal capsule, posterior limb
Corona radiata
Ventropostero-lateral nucleus (VPL)
Lateral sulcus
Putamen
Insula
Centromedian nucleus
Lateral ventricle, inferior horn
Subthalamic Nucleus
Substantia Nigra
Pons
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70Dorsomedial Nucleus of the Thalamus
Fornix - Body
Hippocampus
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72Medial geniculate nucleus
Cingulate Gyrus
Fornix - Body
Internal capsule, posterior limb
Lateral geniculate nucleus
Hippocampus
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74Longitudinal fissure
Thalamus
Caudate
Lateral sulcus
Cerebral aqueduct
Lateral ventricle, inferior horn
Middle cerebellar peduncle
Medulla
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76Fornix
Hippocampus
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78Fornix
Hippocampus
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80Interposed nuclei
Fastigial nucleus
Dentate nucleus
81Cerebellum Interlude
- Cerebellum lesion of the anterior vermis causes
truncal ataxia. People prone to this are
alcoholics. - If you lesion of cerebellar hemispheres, you get
appendicular ataxia and intention tremors. - Lesion to flocculus will disrupt vestibular
function and head-eye movements.
82Under surface of the cerebellum
Posterolateral fissure separates body from
flocculonodular lobe
83The 3 lobes are further classified based on
their developmental origins and functions
- 1-Anterior Lobe Paleocerebellum
Spinocerebellum - -Concerned with postural reflexes, integration
of axial and limb musculature with proper
equilibrium - 2-Posterior Lobe Neocerebellum
Pontocerebellum - -Concerned with smoothing fine voluntary
movements of distal musculature - 3-Flocculo-nodular LobeArchicerebellumVestibuloc
erebellum - -Concerned with maintaining equilibrium
proper adjustment of anti-gravity muscles
during movement
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85Longitudinal fissure
Corona radiata
Corpus callosum, body
Longitudinal fissure
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87Cingulate Gyrus
Fornix
Anterior Nucleus of the Thalamus
Dorsomedial nucleus of the Thalamus
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89Fornix- Columns
Dorsomedial Nucleus of the Thalamus
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91Corpus callosum, genu
Caudate nucleus
Cingulate gyrus
Internal capsule, anterior limb
Globus pallidus
Putamen
External capsule
Insula
Claustrum
Internal capsule, posterior limb
Extreme capsule
Ventral lateral nucleus of the thalamus
Thalamus
Corpus callosum, splenium
Lateral ventricle, posterior horn
3rd ventricle
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93Genu of Internal Capsule
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95Anterior Commissure
Medial geniculate nucleus
Fornix- Columns
Internal capsule, posterior limb
Optic radiations
Lateral geniculate nucleus
Hippocampus
Superior colliculus
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973rd ventricle
Crus cerebri
Cerebral aqueduct
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99Optic nerve
Optic chiasm
Optic tract
Lateral geniculate nucleus
Medial geniculate nucleus
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101Hypothalamus
Nucleus Accumbens
Mammillary Body
Hippocampus
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103Mammillary Body
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105VPM
VPL
Internal capsule, posterior limb
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107Fornix
Mammillothalamic Tract
108Neuroscience Lab 2 Spinal CordWelke, Ph.D.
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111Posterior root
Posterior sulcus
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113Posteriolateral sulcus
Posterior intermediate sulcus
Posterior median sulcus
Posterior root
Dorsal root
Fasciculus gracilis
Fasciculus cuneatus
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115Ventral root
Anterior median fissure
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117Anterior median fissure
Ventral root
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119Conus medullaris
Cauda equina
Filum terminale
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121Fasciculus gracilis
Sacral Cord
Lateral corticospinal tract
Spinothalamic tract
Anterior median fissure
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123Fasciculus gracilis
Lumbar Cord
Posteromarginal Nucleus
Lateral corticospinal tract
Substantia gelatinosa
Lumbar enlargement
Spinothalamic tract
Anterior white commissure
Anterior median fissure
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125Gracile fasciculus
Thoracic Cord
Posteromarginal Nucleus
Posterior spinocerebellar tract
Lateral cortico- spinal tract
Intermed- iolateral cell column
Lateral horn
Anterior spinocerebellar tract
Spinothalamic tract
Clarkes nucleus
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127Cervical Cord
Fasciculus gracilis
Fasciculus cuneatus
Substantia gelatinosa
Lissauers tract
Lateral cortico- spinal tract
Cervical enlargement
Spinothalamic tract
Anterior median fissure
128Neuroscience Lab 3 BrainstemWelke, Ph.D.
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130CN XII
Olive
CN IX
CN X
Pyramid
Anterior median fissure
CN XI
Decussation of the pyramids
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132Pyramid
Pyramidal Decussation
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134Stria medullaris of 4th ventricle
Vagal Trigone
Obex
Hypoglossal Trigone
Gracile tubercle
Posterior median fissure
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136Interpeduncular fossa
CN III
Cerebral peduncle
CN V
CN VI
CN VII
Inferior pontine sulcus
CN VIII
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138Superior colliculus
Inferior colliculus
CN IV
Cerebellar peduncles
Facial colliculus
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140Medial geniculate nucleus
Superior colliculus
Brachium of inferior colliculus
Lateral geniculate nucleus
Inferior colliculus
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142Interthalamic adhesion
Thalamus
Hypothalamic sulcus
Habenula
Anterior commissure
Pineal gland
Posterior commissure
Lamina terminalis
Hypothalamus
Mammillary body
143Sacral Cord
144Sacral Cord
Lateral Corticospinal Tract
LMNs of appendicular muscles
LMNs of axial muscles
145T4
146T4
LMNs of axial muscles
Lateral Corticospinal Tract
Anterior Corticospinal Tract
147L4
148L4
149L4
LMNs of appendicular muscles
LMNs of axial muscles
Lateral Corticospinal Tract
Anterior Corticospinal Tract
150C7
151C7
LMNs of appendicular muscles
Lateral Corticospinal Tract
Anterior Corticospinal Tract
LMNs of axial muscles
152C1
153C1
Lateral Corticospinal Tract
Anterior Corticospinal Tract
LMNs of axial muscles
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155Spinal Accessory Nucleus CN XI
Pyramidal Decussation
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157Medulla, caudal
Nucleus gracilis
Posterior spinocerebellar tract
Nucleus cuneatus
Accessory cuneate nucleus
Hypoglossal nucleus
Spino- thalamic tract
Anterior spinocerebellar tract
Inferior olivary nucleus
Inferior olivary nucleus
Medial lemniscus
Pyramid
158What tract? vs What cell bodies?
159Gracile nucleus
Gracile fasciculus
Cuneate nucleus
Cuneate fasciculus
Spinal trigeminal tract
Spino- thalamic tract
Spinal trigeminal nucleus
Internal arcuate fibers
Medial lemniscus
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161Hypoglossal Nucleus
Nucleus Ambiguus
Pyramid
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163Medulla
Hypoglossal nucleus
4th ventricle
Reticular formation
Spinothalamic tract
Inferior olivary nucleus
Pyramid
Medial lemniscus
164Discuss Blood Supply along with these structures
165Solitary tract
Solitary nucleus
Spinal trigeminal tract
Spino- thalamic tract
Spinal trigeminal nucleus
Medial lemniscus
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167Medial vestibular nucleus
Inferior vestibular nucleus
Cochlear nuclei
Medial longitudinal fasciculus
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169Medulla, rostral
4th ventricle
Reticular form- ation
Spinothalamic tract
Inferior olive
Pyramid
Medial lemniscus
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171Medial vestibular nucleus
Inferior vestibular nucleus
medial longitudinal fasciculus
Inferior cerebellar peduncle
Reticular formation
Inferior olivary nucleus
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173Spinal trigeminal nucleus
Spino- thalamic tract
Spinal trigeminal tract
Central tegmental tract
Medial lemniscus
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175medulla - pons
Reticular formation
Facial nucleus
Spino- thalamic tract
Pyramid
Medial lemniscus
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177Pons
4th ventricle
Cerebellar Peduncles (superior)
Reticular formation
Facial nucleus
Spinothalamic tract
Corticospinal fibers
Medial lemniscus
Pontocerebellar fibers
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179Reticular formation
Principle sensory trigeminal nucleus
Central tegmental tract
Medial lemniscus
Spino- thalamic tract
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181Medial longitudinal fasciculus
Abducens nucleus
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183Abducens Nucleus
Facial Nucleus
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185Medial longitudinal fasciculus
Superior olivary nucleus
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187Superior cerebellar peduncle
Superior vestibular nucleus
Lateral vestibular nucleus
Reticular formation
Middle cerebellar peduncle
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189Motor Nucleus of V
Pyramidal Fascicle
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191Pons, rostral
Reticular formation
Medial lemniscus
Spinothalamic tract
Cerebellar peduncle
Corticospinal fibers
Pontocerebellar fibers
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193Inferior colliculus
Midbrain
Cerebral aqueduct
Reticular formation
Lateral lemniscus
Medial longitudinal fasciculus
Spinothalamic tract
Medial lemniscus
Corticospinal fibers
Pontocerebellar fibers
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195Periaqueductal gray
Central tegmental tract
Reticular formation
Medial longitudinal fasciculus
Spinothalamic tract
Medial lemniscus
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197Superior colliculus
Red nucleus
Oculomotor Nucleus
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199Midbrain
Superior colliculus
Cerebral aqueduct
Reticular formation
Oculomotor nucleus
Medial lemniscus
Spinothalamic tract
Corticospinal fibers
Substantia nigra
Cerebral Peduncle
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201Superior colliculus
Brachium of the inferior colliculus
Trochlear nucleus
Medial longitudinal fasciculus
Superior cerebellar peduncle, decussation
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203VPM
VPL
Internal capsule, posterior limb
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205Superior colliculus
Edinger-Westphal nucleus
Medial geniculate nucleus
Oculomotor nucleus
Medial longitudinal fasciculus
Medial longitudinal fasciculus
Lateral geniculate nucleus
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207Fornix
Mammillothalamic Tract
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211Neuroscience Lab 4 CNS Blood SupplyWelke,
Ph.D.
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213Internal Carotid System
214Anterior Cerebral Artery
Ophthalmic Artery
Middle Cerebral Artery
Anterior Communicating Artery
Anterior Choroidal Artery
Posterior Communicating Artery
Internal Carotid System
215Vertebral Artery System
216Vertebral Artery System
Posterior Cerebral Artery
Superior Cerebellar Artery
Anterior Inferior Cerebellar Artery (AICA)
Basilar Artery
Vertebral Artery
Posterior Inferior Cerebellar Artery (PICA)
Anterior Spinal Artery
217- Review of Blood Supply/Lesions 1
- Lesions of the Medulla
- Occlusion of Anterior Spinal Artery
- Medial Medullary Syndrome (Inferior Alternating
Syndrome) - Occlusion of PICA (do not write PICA on the test
write Posterior Inferior Cerebellar Artery) - Lateral Medullary Syndrome (Wallenburgs 5 Ss)
- Lesions at the level of the Pons
- Occlusion of Basilar/Pontine Artery
- LOCKED IN!!!
- Medial Pontine Syndrome (Middle Alternating AKA
Raymong or Foville Syndrome) (contra hemiplegia
(1.Medial Lemniscus and 2.STT) and ipsi 3.
abducens palsy (diplopia)) and paralysis of
conjugate gaze ipsi ( towards lesion) 4. PPRF
(pontine gaze center) - Occlusion of AICA (Anterior Inferior Cerebellar
Artery) - Lateral Pontine Syndrome (1. Contra Hemiplegia,
2. Ipsi Facial muscles apralysis, 3. Contra loss
of PT 4. Ipsi mastication motor loss and PT on
face) - Occlusion of SCA (Sup Cerebellar Artery)
- superior cerebellar peduncle (AntSC tract!)
cerebellum
218- Review of Blood Supply/Lesions 2
- Lesions at the level of the Midbrain
- Occlusion of PCA
- Webers Symdrome Superior Alternating
Hemiplegia. (ipsilateral oculomotor nerve palsy
contralateral hemiplegia) - Benedikts Webers damage to the tegmental
regions and the red nucleus (Add contralateral
ataxia, tremor, involuntary movements) - Tumor in the Pineal Region (A germinoma,
astrocytom, etc (a tumor) impoinging on the
superior colliculi) - Parinaud Syndrome (1. paralysis of upward gaze
(sup colliculi) 2. hydrocephalus (occlusion of
cerebral aqueduct) 3. failure of eye movement due
to pressure on the oculomotor and trochlear
nuclei 4. patients may also have nystagmus due
to involvment of MLF. - Lesions at the Brain
- Infarct of Posterior Thalamic Nuclei
- Complete sensory loss on the contralateral side
of body. Patient may develop thalamic pain or
anesthesia dolorosa - Lesion to the Genu of the Internal Capsule
- UMN damage for face and tongue. CONTRA tongue
deviation (opposite of the usual lick your
wounds and contra lower ½ of the face paralyzed - One and a half Syndrome
- Lesion is near the midline. Involves Abducens
Nucleus and Adjacent PPRF and fibers from the
opposite Abducens that enter the contra MLF of
the lesioned side. (1) Loss of ipso abduction
(lateral rectus) and adduction (medial rectus)
and (2) loss of contra adduction (medial rectus).
SO you have (1) and a ½ (2). The only remaining
side to side movement is to move one of eyes
contra by the one intact abducens - Horizontal Gaze Palsy
- Internuclear Opthalmoplegia lesion in MLF b/t
CN III and VI
219Vertebral Artery System
220Posterior Communicating Artery
Posterior Cerebral Artery
Superior Cerebellar Artery
Internal Carotid Artery
Anterior Inferior Cerebellar Artery (AICA)
Vertebral Artery System
Posterior Inferior Cerebellar Artery (PICA)
Anterior Spinal Artery
221Circle of Willis
222Anterior Communicating Artery
Anterior Cerebral Artery
Internal Carotid Artery
Posterior Communicating Artery
Posterior Cerebral Artery
Basilar Artery
Circle of Willis
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224Great Cerebral Vein (Great Vein of Galen)
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226Anterior Cerebral Artery
Internal Carotid Artery
Middle Cerebral Artery
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228Middle Cerebral Artery
Anterior Cerebral Artery
Internal Carotid Artery
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230Posterior Cerebral Artery
Superior Cerebellar Artery
Basilar Artery
Vertebral Artery
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232Posterior Cerebral Artery
Basilar Artery
Superior Cerebellar Artery
Vertebral Artery
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234Posterior Cerebral Artery
Superior Cerebellar Artery
Vertebral Artery
Basilar Artery
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236Posterior Cerebral Artery
Superior Cerebellar Artery
Basilar Artery
Vertebral Artery
237Limbic SystemStructures from Rostral to
Caudal(these were already mixed in with the
coronal/axial sections for the most part The
following are ONLY labeled so that you can trace
out thePapez! Papez! Papez!!!!!!!!!!)
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240Mammillary Body
241Cingulate Gyrus
Cingulum Bundle
Nucleus Accumbens
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243Fornix - Columns
Anterior Commissure
Uncus
244Fornix - Columns
Amygdala
Hypothalamus
245Fornix - Body
Anterior Nucleus of the Thalamus
Mammilothalamic Tract
Hippocampus
246Dorsomedial Nucleus of the Thalamus
Fornix - Body
Hippocampus
247Dorsomedial Nucleus of the Thalamus
Fornix - Body
Hippocampus
248Fornix - Body
Hippocampus
249Fornix
Hippocampus
250Fornix
Hippocampus
251Cingulate Gyrus
Fornix
Anterior Nucleus of the Thalamus
Dorsomedial nucleus of the Thalamus
252Fornix- Columns
Dorsomedial Nucleus of the Thalamus
253Anterior Commissure
Fornix- Columns
Hippocampus
254Hypothalamus
Mammillary Body
Hippocampus