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What are the five functions of the nervous system
homeostasis, integration, mental activity, sensory input, control of skeletal muscles
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What is the basic unit of a nervous cell
neuron
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What is an afferent neuron
it is a neuron that takes information from the environment and takes it into the central nervous system
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what is an efferent neuron
a neuron that takes inforation fro he central nervous syste and takes it to the environent
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What are motor neurons
they are neurons that control movement
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what are the sensory neurons
they are the neuron that control the 5 senses
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WHat are the two nervous systes
central nervous and paripheral nervous
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what makes up the centrl nervous syste
the brain and spinal cord
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what makes up the paripheral nervous system
everything else that is not the spinal cord and the brain
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What are the three types of neurons
multipolar;bipolar; unipolar
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what makes each type of neuron that kind of neuron
- multipolar-when a neuron has many dendrite and one axon
- bipolar-a neuron having one axon and one dendrite
- unipolar-had one projection usually an axon
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what is the name of the litle gap between the the dendrites
cynapse
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what enables the message to jump across the cynapse to the oher neuron
nerotransmitters
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What is a nissl body
a large consintration of rough er.. mostly inly in neurons
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How many hemispheres are the brain divided into
2; left and right
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what is the function of the corpus colosum
it allows the two hemispheres to communicate with eachother;
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How many lobes is in the human brain
4
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what are the four lobes of the brain
frontal, pariteal, temperal, occipital
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what are the four regions of the brain
cerebellum, cerebrum, brain stem and the dienlephalm
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what are the three parts of the dienlephalm
epithalamus, thalimus, hypdthalimus
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which lobe controls the volunary motor functions, modivation, aggression, mood, and smell reception
frontal lobe
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whichlobe controls reception, evaluation of dendory skills, touch, pain, temperature, balance, and taste
parietal lobe
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whichlobe controls reception and integration of visual concepts
occipital lobe
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which lobe controls ofactory sinsation(smell) hearing, and memory
temporal lobe
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What three protections does the human body have to protect the bran and spinal cord
menengies, skull, and cerebrospinal fluid
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what are the three parts to the menengies
dura mater, arachnoid mater, and the pia mater
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whar are three parts o fthe brain stem
medulla oblongata, pons mid brain
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white matter
white in appearance; myelinates fibers of neurns(axons)
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grey matter
composed of redish-grey dendrite fibers and amd nervoual bodies
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where is memory stored
cerebral cortex
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what are brain waves measured by
eeg(ElectroEucephalogram
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what are the four types of brain waves
Alpah, theta, beta, delta
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when is the brain transmitting alpha waves
in the 1st stage of sleep
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when is beta waves trasmitted
when awake
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when isthe brain transmitting thea waves
in the second stage of sleep
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when is the delta waves transmitted
in the 3ed stage of sleep
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what stage of sleep is when R,E.M and dreams take place
the fourth and last stage
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how are the vertebrae identified
the region and the nUMBER
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How many cranial nerves are there
12 pairs
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how many spinal nerves are there
31 pairs
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what do the cerviacal spinal nerves control
arms, neck, and hands
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what does the theracic spinal nerves do
chest, abdoman, and arms
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Lumbar spinal nerves control
legs and thighs
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sacral nerves control
legs toes and groin
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why does the brain have sulci and gyri
to have more surface area for chemical reactions
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what side of the brain is invovlved with problem solving, critical thinking, math, writing, and language
left brain
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which side of the brain controls creativity, art, music, and space relation
right brain
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what are the two types of brain matter
white and grey
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