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

Gross Brain Structures

Compiled by MF Dauzvardis


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

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


Medulla

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


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

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


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

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


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

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


Medulla

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


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

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


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


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

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


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

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


Medulla


Pons


Midbrain, interpeducular fossa


Cerebellum


Temporal lobe


mammillary bodies


optic chiasm


Pia mater


I


II


III


IV


V


VI


VII


VIII


IX, X, XI


Location of XII, between pyramid and olive


Blood vessels, MCA


Flocculus


Cerebellum (vermis)


Floor of 4th ventricle


Cerebellar peducles

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


Superior and inferior colliculi

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


Pineal


Thalami

Major relay station for sensory information


Lateral geniculate for visual relay


Area of medial geniculate, relay for audition


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


Pulvinar nucleus of thalamus


Obex—opening of central canal into 4th ventricle


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


Brachium(arm) of the superior colliculus


Brachium of the inferior colliculus


3rd ventricle


Genu of corpus collosum


Anterior limb of internal capsule


Genu of internal capsule


Posterior limb of internal capsule


Splenium of corpus collosum


Visual cortex


Head of caudate


Putamen


Globus pallidus


Insula


Thalamus


Columns of fornix—hippocampus to mammilary bodies


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