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Brain Impractical Uno Compiled by MF Dauzvardis Gross Brain Structures.

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Presentation on theme: "Brain Impractical Uno Compiled by MF Dauzvardis Gross Brain Structures."— Presentation transcript:

1 Brain Impractical Uno Compiled by MF Dauzvardis Gross Brain Structures

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4 Cerebellum Covers the fourth ventricle, responsible for the initiation and planning of movement, cerebellar signs are ipsilateral, midline lobe is called vermis, highly crenated cortex is called “arbor vitae”, key cells = pyramidal, granular, and molecular

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6 Pineal Secretes melatonin, seat of the soul, biological clock?, third eye in some fishes and amphibians.

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8 Medulla Just rostral to cervical cord, contains critical breathing centers, fed by vertebral and pica arteries (lateral wallenberg syndrome when pica is blocked)

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10 Pons “bridge” Covered largely by the 4 th ventricle and the cerebellum. Fed in part by the basilar artery, Many cortical pontine fibers end in the pontine gray nuclei which in turn project to the cerebellum via the MCP

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12 Midbrain Key features: cerebral peduncles, aqueduct of Sylvius, substantia nigra, tectum (inferior and superior colliculi) red nucleus, CN III, IV

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14 Fourth ventricle Contains csf, choroid plexuses, foramen luscka(lateral) and magendie(medial) lead to cisterna magna and subarachnoid space. CSF leaves midbrain via aqueduct of Silvius

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16 Aqueduct of Silvius Connects 4 th ventricle to 3 rd ventricle, obstruction can lead to hydrocephaly, surrounded by periaqueductal gray (PAG)—related to pain

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18 3 rd ventricle Filled with CSF, sits between thalami and enters hypothalamus, connects to lateral ventricles via foremen of monroe, contains some choroid and also the stria medullaris thalami which connect habenula to septal nuclei

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20 Tectum Consists of superior and inferior colliculi, don’t forget SLO-AIM

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22 Medulla Just rostral to cervical cord, contains critical breathing centers, fed by vertebral and pica arteries (lateral wallenberg syndrome when pica is blocked)

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24 Pons “bridge” Covered largely by the 4 th ventricle and the cerebellum. Fed in part by the basilar artery, Many cortical pontine fibers end in the pontine gray nuclei which in turn project to the cerebellum via the MCP

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26 Midbrain Key features: cerebral peduncles, aqueduct of Sylvius, substantia nigra, tectum (inferior and superior colliculi) red nucleus, CN III, IV

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28 Cerebellum Covers the fourth ventricle, responsible for the initiation and planning of movement, cerebellar sighs are ipsilateral, midline lobe is called vermis, highly lobulated cortex is called “arbor vitae”, key cells = pyramidal, granular, and molecular

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30 4 th ventricle Contains csf, choroid plexuses, foramen luska(lateral) and magendi(medial) lead to cisterna magna and subarachnoid space. CSF leaves midbrain via aqueduct of Silvius

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32 Aqueduct Connects 4 th ventricle to 3 rd ventricle, obstruction can lead to hydrocephaly, surrounded by periaqueductal gray (PAG)—related to pain

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34 3 rd ventricle Filled with CSF, sits between thalami and enters hypothalamus, connects to lateral ventricles via foremen of monroe, contains some choroid and also the stria medullaris thalami which connect habenula to septal nuclei

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36 Tectum Consists of superior and inferior colliculi, don’t forget SLO-AIM

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38 Medulla

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40 Pons

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42 Midbrain, interpeducular fossa

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44 Cerebellum

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46 Temporal lobe

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48 mammillary bodies

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50 optic chiasm

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52 Pia mater

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54 I

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56 II

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58 III

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60 IV

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62 V

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64 VI

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66 VII

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68 VIII

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70 IX, X, XI

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72 Location of XII, between pyramid and olive

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74 Blood vessels, MCA

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76 Flocculus

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79 Cerebellum (vermis)

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81 Floor of 4 th ventricle

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83 Cerebellar peducles Superior (brachium conjunctivum), Middle (brachium pontis), Inferior (restiform body)

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85 Superior and inferior colliculi Slo-aim superior colliculi, lat geniculate, optic stuff auditory stuff, inf colliculus,med geniculate,

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87 Pineal

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89 Thalami Major relay station for sensory information

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91 Lateral geniculate for visual relay

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93 Area of medial geniculate, relay for audition

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95 Area of vestibular nuclei—remember inferior vestibular nucleus is “peppered”

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97 Pulvinar nucleus of thalamus

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99 Obex—opening of central canal into 4 th ventricle

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101 Cerebral peduncle—connects cerebrum to brainstem—mainly descending motor fibers. Rostrally it turns into the internal capsule

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103 Brachium(arm) of the superior colliculus

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105 Brachium of the inferior colliculus

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107 3 rd ventricle

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109 Genu of corpus collosum

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111 Anterior limb of internal capsule

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113 Genu of internal capsule

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115 Posterior limb of internal capsule

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117 Splenium of corpus collosum

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119 Visual cortex

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121 Head of caudate

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123 Putamen

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125 Globus pallidus

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127 Insula

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129 Thalamus

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131 Columns of fornix— hippocampus to mammilary bodies


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