Shared Flashcard Set

Details

Med term ch 10
Nervous system
235
Medical
Graduate
03/18/2008

Additional Medical Flashcards

 


 

Cards

Term
arthr/o
Definition
articulation
Term
cerebell/o
Definition
cerebellum (little brain)
Term
cerebr/o
Definition
cerebrum (largest part of the brain)
Term
crani/o
Definition
skull
Term
encephal/o
Definition
entire brain
Term
esthesi/o
Definition
sensation
Term
gangli/o
Definition
ganglion (knot)
Term
gli/o
Definition
glue
Term
gnos/o
Definition
knowing
Term
hypn/o
Definition
sleep
Term
somn/i
Definition
sleep
Term
somn/o
Definition
sleep
Term
kinesi/o
Definition
movement
Term
lex/o
Definition
word or phrase
Term
mening/o
Definition
meninges (membrane)
Term
meningi/o
Definition
meninges (membrane)
Term
myel/o
Definition
spinal cord or bone marrow
Term
narc/o
Definition
stupor, sleep
Term
neur/o
Definition
nerve
Term
phas/o
Definition
speech
Term
phob/o
Definition
exaggerated fear or sensitivity
Term
phor/o
Definition
carry or bear
Term
phren/o
Definition
mind
Term
psych/o
Definition
mind
Term
thym/o
Definition
mind
Term
schiz/o
Definition
split
Term
somat/o
Definition
body
Term
spin/o
Definition
spine (thorn)
Term
spondyl/o
Definition
vertebra
Term
vertebr/o
Definition
vertebra
Term
stere/o
Definition
three dimensional or solid
Term
tax/o
Definition
order or coordination
Term
thalam/o
Definition
thalamus (a room)
Term
ton/o
Definition
tone or tension
Term
top/o
Definition
place
Term
ventricul/o
Definition
ventricle (belly or pouch)
Term
cata-
Definition
down
Term
-asthenia
Definition
weakness
Term
-lepsy
Definition
seizure
Term
-mania
Definition
condition of abnormal impulse toward
Term
-paresis
Definition
slight paralysis
Term
-plegia
Definition
paralysis
Term
central nervous system
Definition
brain and spinal cord
Term
brain
Definition
portion of the central nervous system contained within the cranium
Term
cerebrum
Definition
largest portion of the brain; divided into right and left hemispheres which are connected by a bridge of nerve fibers called the corpus callosum; lobes of cerebrum named after the skull bones they underlie
Term
frontal lobe
Definition
anterior section of each cerebral hemisphere responsible for voluntary muscle movement and personality
Term
parietal lobe
Definition
portion posterior to the frontal lobe, responsible for sensations such as pain, temp, and touch
Term
temporal lobe
Definition
portion that lies below the frontal lobe, responsible for hearing, taste, and smell
Term
occipital lobe
Definition
portion posterior to the parietal and temporal lobes, responsible for vision
Term
cerebral cortex
Definition
outer layer of the cerebrum consisting of gray matter, responsible for higher mental functions
Term
thalamus (diencephalon)
Definition
two gray matter nuclei deep within the brain, responsible for relaying sensory information to the cortex
Term
gyri
Definition
ring or circle; convolutions (mounds) of the cerebral hemispheres
Term
sulci
Definition
ditch; shallow grooves that separate the gyri
Term
fissures
Definition
splitting crack; deep grooves in the brain
Term
cerebellum
Definition
portion of the brain located below the occipital lobes of the cerebrum, responsible for control and coordination of skeletal muscles
Term
brain stem
Definition
region of the brain that serves as a relay between the cerebrum, cerebellum, and spinal cord, responsible for breathing, heart rate, and body temp; there are three levels: mesencephalon (midbrain), pons, and medulla oblongata
Term
ventricles
Definition
series of interconnected cavities within the cerebral hemispheres and brain stem filled with cerebrospinal fluid
Term
cerebrospinal fluid
Definition
plasma-like clear fluid circulating in and around the brain and spinal cord
Term
spinal cord
Definition
column of nervous tissue from the brain stem through the vertebrae, responsible for nerve conduction to and from the brain and the body
Term
meninges
Definition
three membranes that cover the brain and spinal cord, consisting of the dura mater, piam mater, and arachnoid
Term
peripheral nervous system
Definition
nerves that branch from the central nervous system, including nerves of the brain (cranial nerves) and spinal cord (spinal nerves)
Term
cranial nerves
Definition
12 pairs of nerves arising from the brain
Term
spinal nerves
Definition
31 pairs of nerves arising from the spinal cord
Term
sensory nerves
Definition
nerves that conduct impulses from body parts and carry sensory information to teh brain- afferent nerves
Term
motor nerves
Definition
nerves that conduct motor impulses from the brain to the muscles and glands; efferent nerves
Term
autonomic nervous system
Definition
nerves that carry involuntary impulses to smooth muscle, cardiac muscle, and various glands
Term
hypothalamus
Definition
control center for the autonomic nervous system located below the thalamus (diencephalon)
Term
sympathetic nervous system
Definition
division of the ANS concerned primarily with preparing the body in stressful or emergency situations
Term
parasympathetic nervous system
Definition
division of the ANS that is more active in ordinary conditions; it counterbalances the effects of the sympathetic system by restoring the body to a restful state after a stressful experience
Term
aphasia
Definition
condition without speech; impairment due to localized brain injury that affects understanding , retrieving, and formulating meaningful and sequential elements of language
Term
dysarthria
Definition
condition of difficult articulation; group of related speech impairments that may affect the speed, range, direction, strength, and timing of motor movements as a result of paralysis, weakness, or incoordination of speech muscles
Term
dysphasia
Definition
difficulty speaking
Term
coma
Definition
general term referring to levels of decreased consciousness with varying responsiveness; a common method of assessment id the Glasgow coma scale
Term
delirium
Definition
state of mental confusion due to disturbances in cerebral function- there are many causes, including fever, shock, or drug overdose
Term
dementia
Definition
impairment of intellectual function characterized by memory loss, disorientation, and confusion
Term
motor deficit
Definition
loss or impairment of muscle function
Term
sensory deficit
Definition
loss or impairment of sensation
Term
neuralgia
Definition
pain along the course of a nerve
Term
paralysis
Definition
temporary or permanent loss of motor control
Term
flaccid paralysis
Definition
defective (flabby) or absent muscle control caused by a nerve lesion
Term
spastic paralysis
Definition
stiff and awkward muscle control caused by a central nervous system disorder
Term
hemiparesis
Definition
partial paralysis of the right or left half of the body
Term
sciatica
Definition
pain that follows the pathway of the sciatic nerve caused by compression or trauma of the nerve or its roots
Term
seizure
Definition
sudden, transient disturbances in brain function resulting from abnormal firing of nerve impulses (may or may not be associated with convulsions)
Term
convulsion
Definition
to pull together; type of seizure that causes a series of sudden, involuntary contractions of muscles
Term
syncope
Definition
fainting
Term
tactile stimulation
Definition
evoking a response by touching
Term
hyperesthesia
Definition
increased sensitivity to stimulation such as touch or pain
Term
paresthesia
Definition
abnormal sensation of numbness and tingling without objective cause
Term
agnosia
Definition
any of many types of loss of neurological function associated with interpretation of sensory information
Term
astereognosis
Definition
inability to judge the form of an object by touch
Term
atopognosis
Definition
inability to locate a sensation properly, such as to locate a point touched on the body
Term
Alzheimer disease
Definition
disease of structural changes in the brain resulting in an irreversible deterioration that progresses from forgetfulness and disorientation to loss of all intellectual functions, total disability, and death
Term
amyotrophic lateral sclerosis
Definition
a condition of progressive deterioration of motor nerve cells resulting in total loss of voluntary muscle control; symptoms advance from muscle weakness in the arms, legs, muscles or speech, swallowing, and breathing to total paralysis and death- aka Lou Gehrig disease
Term
cerebral palsy
Definition
condition of motor dysfunction caused by damage to the cerebrum during development or injury at birth, characterized by partial paralysis and lack of muscle coordination
Term
cerebrovascular disease
Definition
disorder resulting from a change within one or more blood vessels if the brain
Term
cerebral arteriosclerosis
Definition
hardening of the arteries of the brain
Term
cerebral atherosclerosis
Definition
condition of lipid ( fat) buildup within the blood vessels of the brain
Term
cerebral aneurysm
Definition
dilation of a blood vessel in the brain
Term
cerebral thrombosis
Definition
presence of a stationary clot in the blood vessel of the brain
Term
cerebral embolism
Definition
obstruction of a blood vessel in the brain by an embolus transported through the circulation
Term
cerebrovascular accident/stroke
Definition
damage to teh brain caused by cerebrovascular disease (occlusion of a blood vessel by an embolus or thrombus or intracranial hemorrhage after rupture of an aneurysm)
Term
transient ischemic attack
Definition
brief episode of loss of blood flow to the brain usually caused by a partial occlusion that results in temporary neurological deficit (impairment)- often preceeds a CVA
Term
carotid TIA
Definition
ischemia of the anterior circulation of the brain
Term
vertebrobasilar TIA
Definition
ischemia of the posterior circulation of the brain
Term
encephalitis
Definition
inflammation of the brain
Term
epilepsy
Definition
disorder affecting the CNS characterized by recurrent seizures
Term
tonic-clonic
Definition
stiffening-jerking; a major motor seizure involving all muscle groups- previously termed grand mal seizure
Term
absence
Definition
seizure involving a brief loss of consciousness without motor involvement- previously termed petit mal seizures
Term
partial
Definition
seizures involving only limited areas of the brain with localized symptoms
Term
glioma
Definition
tumor of glial cells graded by degree of malignancy
Term
herniated disk
Definition
protrusion of a degenerated or fragmented intervertebral disk so that the nucleus pulposus protrudes, causing compression on the nerve root
Term
herpes zoster
Definition
viral disease affecting the peripheral nerves, characterized by painful blisters that spread over the skin following the affected nerves, usually unilaterally- aka shingles
Term
Huntington disease
Definition
hereditary disease of the CNS
Term
Huntington chorea
Definition
characterized by bizarre involuntary body movements and progressive dementia
Term
hydrocephalus
Definition
abnormal accumulation of cerebrospinal fluid in the ventricles of the brain as a result of developmental anomalies, infection, injury, or tumor
Term
meningioma
Definition
benign tumor of the coverings of the brain (meninges)
Term
meningitis
Definition
inflammation of the meninges
Term
migraine headache
Definition
paroxysmal attacks of mostly unilateral headache often accompanied by disordered vision, nausea, and/or vomiting, lasting hours or days and caused by dilation of arteries
Term
multiple sclerosis
Definition
disease of the CNS characterized by the demyelination (deterioration of the myelin sheath) of nerve fibers, with episodes of neurological dysfunction (exacerbation) followed by recovery (remission)
Term
myasthenia gravis
Definition
autoimmune disorder that affects the neuromuscular junction, causing a progressive decrease in muscle strength with activity and a return of strength after a period of rest
Term
myelitis
Definition
inflammation of the spinal cord
Term
narcolepsy
Definition
sleep disorder characterized by a sudden, uncontrollable need to sleep, attacks of paralysis (cataplexy), and dreams intruding while awake (hypnagogic hallucinations)
Term
Parkinson disease
Definition
condition of slowly progressive degeneration of an area of the brainstem (substantia nigra) resulting in a decrease of dopamine (a chemical neurotransmitter that is necessary for proper movement); characterized by tremor, rigidity or muscles, and slow movements (bradykinesia), usually occuring later in life
Term
plegia
Definition
paralysis
Term
hemiplegia
Definition
paralysis on one side of the body
Term
paraplegia
Definition
paralysis from the waist down
Term
quadraplegia
Definition
paralysis of all four limbs
Term
poliomyelitis
Definition
inflammation of the gray matter of the spinal cord caused by a virus, often resulting in spinal and muscle deformity and paralysis
Term
polyneuritis
Definition
inflammation involving two or more nerves, often owing to a nutritional deficiency such as lack of thiamine
Term
reflex sympathetic dystrophy
Definition
condition of abnormal function of the sympathetic nervous system in response to pain perception, usually as the result of an injury to an extremity; symptoms include persistent burning pain, tissue edema, joint tenderness, changes in skin color and temp, and abnormal sweating at the pain site- decreased mobility caused by pain can lead to muscle atrophy and loss of motor function
Term
sleep apnea
Definition
periods of breathing cessation that occur during sleep, often causing snoring
Term
spina bifida
Definition
congenital defect in the spinal column characterized by the absence of vertebral arches, often resulting in pouching of spinal membranes or tissue
Term
electrocephalogram
Definition
record of the minute electrical impulses of the brain used to identify neirological conditions that affect brain function and level of consciousness
Term
evoked potentials
Definition
record of minute electrical potentials (waves) that are extracted from ongoing EEG activity to diagnose auditory, visual, and sensory pathway disorders- also used to monitor the neurological functions of pts during surgery
Term
nerve conduction velocity
Definition
electrical shock of peripheral nerves to record time of conduction; used to diagnose various peripheral nervous system disorders
Term
polysomnography
Definition
recording of various aspects of sleep to diagnose sleep disorders
Term
lumbar puncture
Definition
introduction of a specialized needle into the spine in the lumbar region for diagnostic or therapeutic purposes, such as to obtain cerebrospinal fluid for testing; aka spinal tap
Term
magnetic resonance angiography
Definition
use of MRI to image the blood vessels- usefull to detect artherosclerosis and thrombosis
Term
intracranial MRA
Definition
MRI to visualize the circle of Willis
Term
extracranial MRA
Definition
MRI of neck to visualize carotid artery
Term
SPECT brain scan (single photon emission computed tomography)
Definition
scan combining nuclear medicine and computed tomography technology to produce images of the brain after administration of radioactive isotopes
Term
position emission tomography
Definition
combo of nuclear medicine and CT scan to produce images of the brain anatomy and corresponding physiology- study stroke, Alzheimer's, epilepsy, metabolic brain disorders; provides greater accuracy than SPECT, but used less often due to cost and limited availability of radioisotopes
Term
cerebral angiogram
Definition
x-ray of blood vessels in brain after injection of contrast media
Term
myelogram
Definition
x-ray of spinal cord after intraspinal injection of contrast media
Term
reflex testing
Definition
test performed to observe the body's response to a stimulus
Term
deep tendon reflexes
Definition
involuntary contraction after percussion at tendon indicating function
Term
Babinski sign or reflex
Definition
pathological response to stimulation of the plantar surface of the foot; positive if toes dorsiflex
Term
transcranial sonogram
Definition
image made by sending ultrasound beams through skull to asses blood flow in intracranial vessels- diagnostic approach to stroke and head trauma
Term
craniectomy
Definition
excision of part of the skull to approach the brain
Term
craniotomy
Definition
incision into the skull to approach the brain
Term
diskectomy
Definition
removal of a herniated disk often done percutaneously
Term
laminectomy
Definition
excision of one or more laminae of the vertebrae to approach the spinal cord
Term
vertebral lamina
Definition
flattened posterior portion of the vertebral arch
Term
microsurgery
Definition
utilization of a microscope to dissect minute structures during surgery
Term
neuroendovascular surgery
Definition
diagnosis and treatment of disorders within cerebral blood vessels performed in a specialized angiographic lab by interventional neuroradiologists
Term
neuroplasty
Definition
surgical repair of a nerve
Term
spondylosyndesis
Definition
spinal fusion
Term
chemotherapy
Definition
treatment of malignancies, infections, and other diseases with chemical agents that destroy selected cells or impair their ability to reproduce
Term
radiation therapy
Definition
treatment of neoplastic disease using ionizing radiation to impede proliferation of malignant cells
Term
stereotactic (stereotaxic) radiosurgery
Definition
radiation treatment to inactivate malignant lesions involving the focus of multiple, precise external radiation beams on a target with the aid of a stereotactic frame and imaging such as CT, MRI, or angiography
Term
stereotactic frame
Definition
mechanical devise used to localize a point in space targeting a precise site
Term
thrombolytic therapy
Definition
dissolution of thrombi using drugs- used to treat acute ischemic stroke
Term
hypnotic
Definition
agent that induces sleep
Term
sedative
Definition
agent that has calming effect
Term
affect
Definition
emotional feeling or mood
Term
flat affect
Definition
significantly dulled emotional tone or outward reaction
Term
apathy
Definition
lack of interest or display of emotion
Term
catatonia
Definition
state of unresponsiveness to one's outside environment, usually including muscle rigidity, staring, and inability to communicate
Term
delusion
Definition
persistent belief that has no basis in reality
Term
grandiose delusion
Definition
person's false belief that he or she possesses great wealth, intelligence, or power
Term
persecutory delusion
Definition
person's false belief that someone is plotting against him or her with intent to harm
Term
dysphoria
Definition
restless, dissatisfied mood
Term
euphoria
Definition
exaggerated, unfounded feeling of well-being
Term
hallucination
Definition
false perception of the senses for which there is no reality, most commonly hearing or seeing things
Term
ideation
Definition
formation of thoughts or ideas
Term
mania
Definition
state of abnormal elation and increased activity
Term
neurosis
Definition
psychological condition in which anxiety is prominent
Term
psychosis
Definition
mental condition characterized by disorientation of reality, resulting in the inability to communicate or function within one's environment
Term
thought disorder
Definition
thought that lacks clear processing or logical direction
Term
major depression
Definition
disorder causing periodic disturbances in mood that affect concentration, sleep, activity, appetite, and social behavior; characterized by feelings of worthlessness, fatigue, and loss of interest
Term
dysthymia
Definition
milder affective disorder characterized by a chronic depression persisting for at least 2 years
Term
manic depression (bipolar disorder)
Definition
affective disorder characterized by mood swings of mania and depression
Term
seasonal affective disorder
Definition
affective disorder marked by episodes of depression that most often occur during the fall and winter and remit in the spring
Term
generalized anxiety disorder
Definition
most common, characterized by chronic, excessive, and uncontrollable worry about everyday problems that affects the ability to relax or concentrate but does not usually interfere with social interactions or employment; physical symptoms: muscle tension, trembling, twitching, fatigue, headaches, nausea, and insomnia- symptoms need to exist for at least 6 months
Term
panic disorder
Definition
disorder of sudden, recurrent attacks of intense feelings including physical symptoms that mimic a heart attack such as rapid heart rate, chest pain, shortness of breath, chills, sweating, and dizziness, with a general sense of loss of control or feeling that death is imminent; often progresses to agoraphobia
Term
phobia
Definition
exaggerated fear of a specific object or circumstance that causes anxiety and panic; named for the object or circumstance, such as agoraphobia, claustrophobia, or acrophobia
Term
obsessive compulsive disorder
Definition
anxiety disorder featuring unwanted, senseless obsessions accompanied by repeated compulsions, which can interfere with all aspects of a person's daily life
Term
posttraumatic stress disorder
Definition
condition resulting from an extremely traumatic experience, injury, or illness that leaves the sufferer with persistent thoughts and memories if the ordeal
Term
hypochondriasis
Definition
preoccupation with thoughts of disease and concerns that one is suffering from a serious condition that persists despite medical reassurance to the contrary
Term
autism
Definition
developmental disability commonly appearing during the first 3 years of life, resulting from a neurological disorder affecting brain function, evidenced by difficulties with verbal and nonverbal communication, and an inability to relate to anything beyond oneself in social interactions; individuals with autism often exhibit body movements such as rocking, repetitive hand movements, and commonly become preoccupied with observing parts of small objects or moving parts or performing meaningless rituals
Term
dyslexia
Definition
developmental disability characterized by a difficulty understanding written or spoken words, sentences, or paragraphs, affecting reading, spelling, and self expression
Term
attention-deficit/hyperactivity disorder
Definition
dysfunction characterized by consistent hyperactivity, distractibility, and lack of control over impulses, which interferes with the ability to function normally at school, home, or work
Term
mental retardation
Definition
condition of subaverage intelligence characterized by an IQ of 70 or below, resulting in the inability to adapt to normal social activities
Term
anorexia nervosa
Definition
severe disturbance in eating behavior caused by abnormal perceptions about one's body weight, evidenced by an overwhelming fear of becoming fat that results in a refusal to eat and body weight well below normal
Term
bullimia nervosa
Definition
eating disorder characterized by binge eating followed by efforts to limit digestion through induced vomiting, use of laxatives, or excessive exercise
Term
substance abuse disorder
Definition
mental disorders resulting from abuse of substances such as drugs, alcohol, or other toxins causing personal and social dysfunction; identified by abused substance
Term
schizophrenia
Definition
disease of brain chemistry causing a distorted cognitive and emotional perception of one's environment characterized by a broad range of "positive" and "negative" symptoms
Term
disorganized schizophrenia
Definition
featuring disorganized speech, behavior, and flat or inappropriate affect
Term
catatonic schizophrenia
Definition
featuring catatonia
Term
paranoid schizophrenia
Definition
featuring delusions, most often persecutory or grandiose types
Term
schizoaffective disorder
Definition
concurrent with major depression or manic depression
Term
electroconvulsive therapy
Definition
electrical shock applied to the brain to induce convulsions; used to treat severely depressed patients
Term
light therapy
Definition
use of specialized illuminating light boxes and visors to treat seasonal affective disorder
Term
psychotherapy
Definition
treatment of psychiatric disorders using verbal and nonverbal interaction with patients, individually or in a group, employing specific actions and techniques
Term
behavioral therapy
Definition
treatment to decrease or stop unwanted behavior
Term
cognitive therapy
Definition
treatment to change unwanted patterns of thinking
Term
psychotropic drugs
Definition
medications used to treat mental illness
Term
neuroleptic agents
Definition
drugs to treat psychosis, especially schizophrenia
Term
ADHD
Definition
attention deficit/hyperactivity disorder
Term
ALS
Definition
amyotrophic lateral sclerosis
Term
ANS
Definition
autonomic nervous system
Term
BD
Definition
bipolar disorder
Term
CP
Definition
cerebral palsy
Term
CSF
Definition
cerebrospinal fluid
Term
CVA
Definition
cerebrovascular accident
Term
DTR
Definition
deep tendon reflexes
Term
ECT
Definition
electroconvulsive therapy
Term
EEG
Definition
electroencephalogram
Term
GAD
Definition
generalized anxiety disorder
Term
HD
Definition
Huntington disease
Term
LP
Definition
lumbar puncture
Term
MRA
Definition
magnetic resonance angiography
Term
MS
Definition
multiple sclerosis
Term
NCV
Definition
nerve conduction velocity
Term
OCD
Definition
obsessive compulsive disorder
Term
PD
Definition
panic disorder
Term
PET
Definition
position emission tomography
Term
PNS
Definition
peripheral nervous system
Term
PSG
Definition
polysomnography
Term
PTSD
Definition
pottraumatic stress disorder
Term
RSD
Definition
reflex sympathetic dystrophy
Term
SAD
Definition
seasonal affective disorder
Term
SPECT
Definition
single photon emission computed tomography
Term
TIA
Definition
transient ischemic attack
Supporting users have an ad free experience!