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What tis the Cerebrum?
- not vital to servival
- 100 billion neurons
- control site of the nervous system
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In the Cerebrum, what is gray matter?
- where synapses takes place in outter shell of cerebrum
- folded areas for more surface area
- covers entire brain
- -cortex=towards the out side
- handles executive function
- 15-25 is when it is fully matured.
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In Cerebrum, what is white matter?
- the signal wiring from one side to another
- lobe to lobe
- myleniated
- the bulk of the cerebrums interior
- composed mainly of nerve fibers
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In the Cerebrum, what are the hemisphere's?
- Right= artistic abilities, spatial relationships
- Left= uniformity, logic, rules, verbal skills, writing, math
the hemispheres are seperated by corpus collosum
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What are the fibers in the white matter?
- Commissural=left and right hemi communication
- Association=with in teh same hemi communication
- Projection= low centers
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In the Cerebrum, what are the lobes?
- there are 4 lobes of the cerebal
- Frontal-personality, intelligence, planning and communication
- Parietal-speech, understanding,interprets textures and shape
- Occipital- focus the eye, conscious perceptions of vision
- Temporal- sensation, storage of auditory and visual experiences.
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In the CNS, what is the Diencephalon?
- Central core of the cerebrum
- forms connections with the cortex that are involved in complex mental processes (Pituitary gland)
- principal autonomic center of brain
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In the CNS, what is Cerebellum?
- smooth, coordinated movements of skeletal mm
- sits inferior and posterior to the large cerebal hemispheres
- processes input received from the cerebral cortex, brain stem nuclei, and peripheral sensory receptors that influence motor neurons supplying skeletal mm.
- provides mm's with precise timing, appropriate patterns of contraction for smooth coordinatied movements.
- function=subconscious level
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In CNS, what is the brain stem?
- basic life support=breathing, heart activity, digestion
- contains sensory and motor pathways between lower and higher centers
- superior most part of the cns containing motor neurons
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In CNS, what are Pons?
- breathing
- ventral fibers
- Middle cerebellar pedunclles connecting the cerebellum and cerebral cortetx for maximal efficiency of motor activites
- nerve nuclei=serve as respiratory centers to control the normal rhythm of breathing.
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In the CNS, what is the medulla oblongata?
houses the major autonomic reflex center that relays visceral motor control to the heart, blood vessels, respiratory and gut tube anatomy
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In the CNS, what is the Spinal Cord?
- least differentiated part of the CNS
- 2-way conduction pathway to and from higher centers in the brain
- initiates complex patters of motor activity
- alternating flexor-extensor patterns seen in walking
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In the Spinal Cord, what is white matter tracts?
2-way communication between body and brain
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In the Spinal Cord, what is the gray matter nuclei?
where message transferance happens
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