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dienchepalon
whore
33
Anatomy
Undergraduate 4
09/14/2010

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Term
ventricles
Definition
Fluid-filled cavities in brain
Lateral, 3rd, 4th, cerebral aqueduct (connects 3rd and 4th)
Term
CSF
Definition
Buoyancy
Protects
Never sits in one spot
Created in the choroid plexus, lateral and 3rd ventricles
Term
CSF disorders
Definition
Hydrocephalus:Abnormal accumulation of cerebrospinal fluid (CSF) in the ventricles, or cavities, of the brain
Schizophrenia
Alzheimer’s
Term
dicephalon and structures
Definition
Middle part of the brain
Structures: Thalamus and Hypothalamus
Term
thalamus
Definition
Role in the basal ganglia
Relay center for sensory information
Interthalamic adhesion
Term
Thalamus as Sensory Relay Station
Definition
Sorts & groups signals, except olfaction
Lateral and medial Geniculate Nucleus
Term
Lateral Geniculate Nucleus
Definition
lgn
–Vision
–Color & brightness information
–Primary Visual Cortex
Term
Medial geniculate nucleus
Definition
Hearing
Primary Auditory Cortex
Term
Interthalamic adhesion
Definition
a band of gray matter joining the thalami;
joining of the two thalami in the center of the third ventricle.
Called also thalamic intermediate mass.
Term
Basal Ganglia: Anatomy
Definition
Striatum (Caudate & Putamen)
Thalamus*
Globus Pallidus
Subthalamic Nucleus
Substantia Nigra
Term
Basal Ganglia: functions and location
Definition
motor controls
Movement, motor control
Cortico-striatal loop
implicit memory

look for rams horns
Term
Cortico-striatal loop striatum use
Definition
Caudate & Putamen receive input from cortex
Term
Flow of the loop
Definition
striatum inhibits the globus pallidus which allows the thalamus to activate, excite the cortex
Term
Substantia Nigra
Definition
Black substance
Produces dopamine: Involved in reducing muscle contradiction
Term
Basal Ganglia & Implicit memory
Definition
Important in generating movements influenced by memory: Learned skills
No awareness of act of remembering
Term
Disorders of basal ganglia
Definition
Problems with movement:
Suppressing unwanted movement
Unable to initiate movement
Pathways are compromised
Term
Damage to globus pallidus
Definition
Involuntary twisting/turning of limbs
Not inhibiting the thalamus
Term
damage to striatum
Definition
Involuntary movements (tremors)
Introduction of new movements
Term
Parkinson’s Disease: where, symptoms, causes
Definition
not enough dopamine, Substantia Nigra is losing the cells to create dopamine.
Inability to initate movement
Dopamine is needed for voluntary movement
Substantia Nigra
Akinesia: unable to move
Bradykinesia: slow movements
Tremors
Cogwheel rigidity: rigid
Other problems
Memory
Attention
Reasoning
Depression
Term
PD treatment
Definition
Levodopa (l-dopa): Synthetic form of dopamine
Pallidotomy: Lesioning the globus pallidus
Deep brain Stimulation: rebalance and supresser tremors
Term
Tardive Dyskinesia
Definition
Result of anti psychotics
Dopamine receptors become too sensitive
Term
Huntington’s Disease
Definition
Disorder of BG, specifically globus pallidus
The inability to inhibit the thalamus
Term
choreas
Definition
Sydenham’s Chorea, St. Vitus’ Dance
Inability to suppress movements of the limbs and the face
Term
I am the motor movement “volume control”
Definition
Globus pallidus
Term
I produce dopamine to send to the basal ganglia
Definition
Substantia Nigra
Term
Together with the putamen, my alias is “the striatum”
Definition
caudate
Term
I can be found dorsal to the substantia Nigra/ redirect
Definition
Sub thalamic nucleus
Term
I am memory without awareness
Definition
Implicit memory
Term
Direct pathway
Definition
Striatum – gp – thalamus
Term
Indirect pathway
Definition
Striatum – globus pallidus – subthalamic nucleus – globus pallidus – thalamus
Term
Supernuclear palsy
Definition
Superior Colliculus is orientating vision to new stimuli, so issues with shifting visual attention, functionally blind: can’t operate in their environment
Term
Akinesia
Definition
unable to move
Term
Bradykinesia
Definition
slow movements
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