Brain impractical uno
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Brain Impractical Uno. Gross Brain Structures. Compiled by MF Dauzvardis. Cerebellum.

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Brain Impractical Uno

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Brain impractical uno

Brain Impractical Uno

Gross Brain Structures

Compiled by MF Dauzvardis


Cerebellum

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


Pineal

Pineal

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


Medulla

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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Pons

“bridge” Covered largely by the 4th 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


Midbrain

Midbrain

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


Fourth ventricle

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


Aqueduct of silvius

Aqueduct of Silvius

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


3 rd ventricle

3rd 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


Tectum

Tectum

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


Medulla1

Medulla

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


Brain impractical uno

Pons

“bridge” Covered largely by the 4th 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


Midbrain1

Midbrain

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


Cerebellum1

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


4 th ventricle

4th 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


Aqueduct

Aqueduct

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


3 rd ventricle1

3rd 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


Tectum1

Tectum

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


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Medulla


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Pons


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Midbrain, interpeducular fossa


Cerebellum2

Cerebellum


Temporal lobe

Temporal lobe


Mammillary bodies

mammillary bodies


Optic chiasm

optic chiasm


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Pia mater


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I


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II


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III


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IV


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V


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VI


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VII


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VIII


Ix x xi

IX, X, XI


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Location of XII, between pyramid and olive


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Blood vessels, MCA


Flocculus

Flocculus


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Cerebellum (vermis)


Floor of 4 th ventricle

Floor of 4th ventricle


Cerebellar peducles

Cerebellar peducles

Superior (brachium conjunctivum), Middle (brachium pontis), Inferior (restiform body)


Superior and inferior colliculi

Superior and inferior colliculi

Slo-aim--------superior colliculi, lat geniculate, optic stuff-------auditory stuff, inf colliculus,med geniculate,


Pineal1

Pineal


Thalami

Thalami

Major relay station for sensory information


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Lateral geniculate for visual relay


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Area of medial geniculate, relay for audition


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


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Pulvinar nucleus of thalamus


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Obex—opening of central canal into 4th ventricle


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


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Brachium(arm) of the superior colliculus


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Brachium of the inferior colliculus


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3rd ventricle


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Genu of corpus collosum


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Anterior limb of internal capsule


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Genu of internal capsule


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Posterior limb of internal capsule


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Splenium of corpus collosum


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Visual cortex


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Head of caudate


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Putamen


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Globus pallidus


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Insula


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Thalamus


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Columns of fornix—hippocampus to mammilary bodies


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