central nervous system objectives

primary regions of the brain

cerebrum, dicephalon, brain stem and cerebellum

white matter of the brain

myelinated

grey matter of the brain

non myelinated

lateral ventricle

large c shape

third ventricle

below lateral and above midbrain

cerebral aqueduct

small ventricle in mid brain super to cerebellum

fourth ventricle

under the cerebral aqueduct anterior to cerebellum

primary motor cortex

pre central gyrus

primary somatosensory cortex

post central gyrus

basal nuclei

aka ganglia; clusters of grey mater in central cortex

components of basal nuclei

caudate nucleus, putamen, and globus pallidus

dicephalon segments

thalamus, hypothalamus and epithalamus

thalamus function

where information is sorted

hypothalamus function

emotion response, body temp, food intake., thirst, hormone production control

epithalamus function

secretes melatonin; sleep inducing and sleep wake cycles

segments of brain stem

midbrain, pons and medulla oblongata

midbrain superior cerebellum peduncles

connector of midbrain and cerebellum

midbrain superior colliculi

vision reflexes

midbrain inferior colliculi

auditory reflexes

midbrain substantial nigra

basal nuclei group

midbrain red nuclei

limb flexion pathways

pons longitudinal tract

spinal cord to brain

pons transverse tract

pons to cerebellum

medulla function

nuclei that regulate heart and breathing, site of decussation

cerebellum function

provides precise timing and appropriate patterns of muscle contractions

cerebellum structure

ipsilateral

limbic system amygdala

receives threats “senses danger”

limbic system cingulate gyrus

express emotion through gestures

limbic system hypothalamus

maintain body regulation

limbic system hippocampus

memory storage and retrieval

brocas area

language: create speech

wernickes area

language; understand what words mean

superficial meningeal layer

dura mater

intermediate menigeal layer

arachanoid mater

deep meningeal layer

pia mater

dura mater layers

periostea and meningeal

falix cerebri

brain split in L and R

falix cerebelli

cerebellum into L snd R

tentorium cerebeli

cerebrum from cerebellum

arachnoid mater layer

“spidery” elastic CT

pia mater layer

“gentle” direct contact w brain tissue

subdural space in arachnoid

bad

subarachnoid

good= CSF

how is CSF formed

choroid plexus

CSF step 1

choroid plexus of each ventricle produces CSF

CSF step 2

CSF flows through the ventricles and into subarachnoid space

CSF step 3

CSF flows through the subarachnoid space

CSF step 4

CSF is absorbed into dural venous sinuses