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110 Cards in this Set
- Front
- Back
CNS |
central nervous system |
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CSF |
cerebrospinal fluid |
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CVA |
Cerebrovascular accident |
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EEG |
electroencephalogram, electroencephalography |
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LP |
lumbar puncture |
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SCI |
spinal cord injury |
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TIA |
transient ischemic attack |
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Cerebrum |
The largest and most obvious part of the brain it is divided into lobes and each lobe has the same name as the cranial bone that is above it Frontal Parietal Temporal Occipital |
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Frontal Lobe |
-Originates conscious thought and intelligence -Predicts future events and the benefits or consequences of actions -Exerts conscious, voluntary control over the skeletal muscles; motor cortex -Coordinates the muscles of the mouth,lips,tongue,pharynx,and larynx; this is done in the speech center, which is only in the left frontal lobe -Analyzes sensory info about taste. This comes from taste receptors in the tongue and throat and is analyzed by the gustatory cortex of the frontal lobe |
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Motor Cortex |
voluntary control over the skeletal muscles found in the frontal lobe |
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Speech center |
located in the left frontal lobe |
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gustatory cortex |
found in the frontal lobe |
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Parietal Lobe |
-Analyzes sensory information about touch, temperature, vibrations, and pain -this is analyzed by the somatosensory cortex |
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Temporal Lobe |
-Analyzes sensory information about hearing -this is analyzed by the auditory cortex -Analyzes sensory information about smells -this information comes from olfactory receptors in the nose and is analyzed by the olfactory cortex |
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Somatosensory Cortex |
analyzes sensory information about touch, temperature, vibration, and pain in the parietal lobe |
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Auditory cortex |
Analyzes sensory information about hearing in the temporal lobe |
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Olfactory cortex |
Analyzes sensory information about smells in the temporal lobe |
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Occipital Lobe |
-Analyzes sensory information about vision -the information comes from receptors in the retina of the eye and is analyzed by the visual cortex |
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Corpus callosum |
- the only thing that connects the left and right hemisphere of the cerebrum -it allows the two hemispheres to communicate with each other and coordinate their activities |
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Right hemisphere |
-recognizes faces, patterns, and three-dimensional structures -analyzes the emotional content of words but not the actual words |
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Left hemisphere |
-performs mathematical and logical reasoning and problem solving and coordinates the recall of memories -it contains the speech center and is important in language skills |
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Visual Cortex |
-the right occipital lobe analyzes sensory information from some parts of both eyes -the left occipital lobe analyzes sensory information from the other parts of both eyes, and this gives three-dimensional vision |
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Thalmus |
-located near the center of the cerebrum -its two lobes form the walls of the third ventricle -acts as a relay station, receiving sensory information from the cranial nerves and the spinal nerves -it sends this information to 2 places |
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where does the Thalmus send the information it collects |
1) midbrain -it generates motor commands if the sensory information suggest an immediate danger 2) cerebrum -analyzes sensory information and compares it with memories and uses it to plan future action |
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hypothalamus |
-located below the thalamus -forms the floor and part of the 3rd wall of the ventricle -has a stock of blood vessels and nerves that connects it to the pituitary gland |
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Ventricles |
- 4 interconnected cavities within the brain -ependymal cells line the ventricles and produce cerebrospinal fluid (CSF) |
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cerebrospinal fluid (CFS) |
- a clear fluid that cushions and protects the brain -contains glucose and other nutrients -flows through the ventricles into the spinal cavity, then back towards the brain, and through the subarachnoid space in the meninges where it is absorbed into the blood of the large veins |
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pons |
-middle part of the brainstem -it relays nerve impulses from the spinal cord to the midbrain, hypothalamus, thalamus, and cerebrum |
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Medulla oblongata |
-connects the pons to the spinal cord -the most inferior part of the brain |
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cerebelum |
-the separate rounded sections of the brain that lies inferior and posterior to the cerebrum -receives sensory info about muscle tone and position of the body -helps maintain balance -receives info from the cerebrum about motor commands and coordinates those movements |
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meninges |
-surrounds the brain -3 separate membrane layers -dura mater, archnoid, subarachnoid, and pia mater |
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dura mater (meninges) |
-outermost membrane beneath the bony cranium -tough fibrous layer that protects the brain |
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arachnoid (meninges) |
the second layer |
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subarachnoid space |
-below the arachnoid -filled with cerebrospinal fluid -contains branching fibers that connect the arachnoid to the pia mater beneath |
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pia mater (meninges) |
-thin, delicate membrane next to the brain -contains a spider like network of blood vessels |
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spinal cord |
-the superior end joins the medula oblongata of the brain - the inferior end becomes a group of nerve roots known as the caudad equina |
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epidural space |
-an area that is unique to the spinal cord -the space is filled with fatty tissue and blood vessels |
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cranial nerves |
-part of the peripheral nervous system -12 pairs of nerves -each pair consists of a nerve to the left side and right side of the body -some nerves receive sensory info from the body -some send motor commands to the voluntary or involuntrary muscles -some carry both sensory and motor nerve impulses like all spinal nervs |
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I Olfactory nerve |
Type: sensory Function:smell |
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II optic nerve |
Type: sensory Function: vision |
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III oculomotor |
Type: Motor Function: Eye Movement |
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V Trigeminal |
Type: sensory and motor Function: facial and oral sensation chewing |
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VII facial nerve |
Type: sensory and motor Function: taste, facial movement, tears and saliva |
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Spinal nerves |
-part of the peripheral nervous system - 31 pairs -each pair consists of a nerve to the left side of the body and on to the right -spinal nerves are all both sensory and motor |
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Dorsal nerve root |
-Receives sensory information from the skin |
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Afferent nerve |
affer/o- bring toward the center -dorsal nerve roots and their spinal nerve - carry nerve impulses from the body to the spinal cord |
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Ventral nerve root |
-carry motor commands from the spinal cord to the voluntary and involuntary muscles |
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efferent |
effer/o- go out from the center -ventral nerve roots and their spinal nerve - carry nerve impulses from the spinal cord to the body |
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reflex |
-rapid involuntary muscle reaction that is controlled by the spinal cord |
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neural tissue |
made up of two categories of cells; neurons and neuralgia |
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neuron |
-an individual nerve cell -functional unit of the nervous system -made up of dendrites, the cell body, and axon |
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neuralgia |
the other category of neutral nerves |
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Axon |
an elongated extension of cytoplasm at the end of the neuron |
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dendrites |
-multiple branching structures at the beginning of the neuron -receives info from other nerve cells |
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cytoplasm |
produce neurotransmitters and energy for the neuron |
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acetylcholine |
-neurotransmitter in synapses between neurons of the parasympathetic division
-voluntary skeletal muscle |
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dopamine(dope addict) |
limbic system |
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edorphins |
natural pain relievers produced by the brain |
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epinephrine (adrenaline) |
-hormone secreted by the adrenal gland and released into the blood -prepairs the body for "flight or fight" or "alert and active" |
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norepinephrine |
rest and digest |
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seotonin |
limbic system |
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amnesia |
partial or total loss of memory of recent or remote experiences |
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aphasia |
-loss of ability to communicate verbally or in writing -can occur with head trauma, a stroke, or Alzheimer's disease |
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dysphasia |
limited impairment that involves some difficulty speaking or understanding words |
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cephalagia |
headache |
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cerebrovascular accident(CVA)
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-disruption or blockage of blood flow to the brain which causes tissue death and an area of necrosis known as an infarct -affects one hemesphere |
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Transient ischemic attack(TIA) |
-temporary lack of oxygenated blood to an area of the brain -like CVA but only lasts 24 hours |
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hemiparesis |
muscle weakness on one side of the body |
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-paresis |
condition of weakness |
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coma |
deep state of unconsciousness and unresponsiveness -caused by trauma, disease in the brain, too little glucose in the blood, and a metabolic imbalance with accumulation of wast products in the blood |
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concussion |
traumatic injury to the brain the results in an immediate loss of consciousness |
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contusion |
-a traumatic injury to the brain or spinal cord |
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dementia |
-disease of the brain in which many neurons in the cerebrum die -in the begining there is a gradual decline in mental abilities |
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encephalits |
inflammation and infection of the brain caused by a virus |
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hematoma |
localized collection of blood formed in the brain because of trauma |
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hydrocephalus |
condition in which an excessive amount of cerebrospinal fluid is produced or the flow of cerbrospinal fluid is blocked |
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meningitis |
inflammation and infection of the meninges of the brain or spinal cord caused by bacterium or virus |
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syncope |
-faint -temporary loss of consciousness |
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spinal cord injury(SCI) |
-trauma to the spinal cord with a partial or complete transection of the cord |
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Bell's Palsy |
weakness, drooping or actual paralysis of one side of the face because of inflammation of the facial nerve(cranial nerve VII) |
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hyperesthesia |
conditon in which there is a heightned awareness and sensitivity to touch and increased response to painful stimuli |
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multiple sclerosis(MS) |
-chronic, progressive, degenerative autoimmune disorder in which the body makes antibodies against myelin -acute inflammation of the nerves and loss of myelin(demyelination) |
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neuralgia |
-pain along the path of a nerve and its branches -caused by an injury -mild to severe pain |
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neuritis |
-inflammation or infection of a nerve -Polyneuritis is in many nerves or all the nerves |
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neuropathy |
any type of disease or injury to a nerve |
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cerebrospinal fluid examination |
test that visually examine the CFS for clarity and microscopically for cells and chemically for proteins and other substances |
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craniotomy |
surgical incision into the cranium to expose the brain tissue |
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alg/o- |
pain |
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astr/o- |
starlike structure |
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caus/o- |
burning |
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cephal/o- |
head |
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cerebr/o- |
cerebrum |
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encephal/o- |
brain |
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mening/o- |
meninges |
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myel/o- |
bone marrow; spinal cord; myelin |
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neur/o- |
nerve |
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phot/o- |
light |
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phob/o- |
fear; avoidance |
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clon/o- |
rapid contracting and relaxing |
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comat/-o |
unconsciousness |
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ependym/o- |
cellular lining |
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gli/o- |
cells that provide lining |
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epilept/o- |
seizure |
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hydr/o- |
water;fluid |
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infarct/o- |
area of dead tissue |
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narc/o- |
stupor; sleep |
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radicul/o- |
spinal nerve root |
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rhiz/o- |
spinal nerve root |
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syncop/o- |
fainting |
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esthes/o- |
sensation |