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110 Cards in this Set

  • Front
  • Back

CNS

central nervous system

CSF

cerebrospinal fluid

CVA

Cerebrovascular accident

EEG

electroencephalogram, electroencephalography

LP

lumbar puncture

SCI

spinal cord injury

TIA

transient ischemic attack

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

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

Motor Cortex

voluntary control over the skeletal muscles




found in the frontal lobe

Speech center

located in the left frontal lobe

gustatory cortex

found in the frontal lobe

Parietal Lobe

-Analyzes sensory information about touch, temperature, vibrations, and pain


-this is analyzed by the somatosensory cortex

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

Somatosensory Cortex

analyzes sensory information about touch, temperature, vibration, and pain in the parietal lobe

Auditory cortex

Analyzes sensory information about hearing in the temporal lobe

Olfactory cortex

Analyzes sensory information about smells in the temporal lobe

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



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

Right hemisphere

-recognizes faces, patterns, and three-dimensional structures


-analyzes the emotional content of words but not the actual words

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

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

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

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

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

Ventricles

- 4 interconnected cavities within the brain


-ependymal cells line the ventricles and produce cerebrospinal fluid (CSF)

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

pons

-middle part of the brainstem


-it relays nerve impulses from the spinal cord to the midbrain, hypothalamus, thalamus, and cerebrum

Medulla oblongata

-connects the pons to the spinal cord


-the most inferior part of the brain

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



meninges

-surrounds the brain


-3 separate membrane layers


-dura mater, archnoid, subarachnoid, and pia mater

dura mater


(meninges)

-outermost membrane beneath the bony cranium


-tough fibrous layer that protects the brain



arachnoid


(meninges)

the second layer

subarachnoid space

-below the arachnoid


-filled with cerebrospinal fluid


-contains branching fibers that connect the arachnoid to the pia mater beneath

pia mater


(meninges)

-thin, delicate membrane next to the brain


-contains a spider like network of blood vessels

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

epidural space

-an area that is unique to the spinal cord


-the space is filled with fatty tissue and blood vessels

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

I Olfactory nerve

Type: sensory


Function:smell

II optic nerve

Type: sensory


Function: vision

III oculomotor

Type: Motor


Function: Eye Movement

V Trigeminal

Type: sensory and motor


Function: facial and oral sensation


chewing

VII facial nerve

Type: sensory and motor


Function: taste, facial movement, tears and saliva

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

Dorsal nerve root

-Receives sensory information from the skin

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

Ventral nerve root

-carry motor commands from the spinal cord to the voluntary and involuntary muscles

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

reflex

-rapid involuntary muscle reaction that is controlled by the spinal cord

neural tissue

made up of two categories of cells; neurons and neuralgia

neuron

-an individual nerve cell


-functional unit of the nervous system


-made up of dendrites, the cell body, and axon

neuralgia

the other category of neutral nerves

Axon

an elongated extension of cytoplasm at the end of the neuron

dendrites

-multiple branching structures at the beginning of the neuron


-receives info from other nerve cells



cytoplasm

produce neurotransmitters and energy for the neuron

acetylcholine

-neurotransmitter in synapses between neurons of the parasympathetic division



-voluntary skeletal muscle

dopamine(dope addict)

limbic system

edorphins

natural pain relievers produced by the brain

epinephrine


(adrenaline)

-hormone secreted by the adrenal gland and released into the blood


-prepairs the body for "flight or fight" or "alert and active"

norepinephrine

rest and digest

seotonin

limbic system

amnesia

partial or total loss of memory of recent or remote experiences

aphasia

-loss of ability to communicate verbally or in writing


-can occur with head trauma, a stroke, or Alzheimer's disease

dysphasia

limited impairment that involves some difficulty speaking or understanding words

cephalagia

headache

cerebrovascular accident(CVA)


-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

Transient ischemic attack(TIA)

-temporary lack of oxygenated blood to an area of the brain


-like CVA but only lasts 24 hours

hemiparesis

muscle weakness on one side of the body

-paresis

condition of weakness

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

concussion

traumatic injury to the brain the results in an immediate loss of consciousness

contusion

-a traumatic injury to the brain or spinal cord



dementia

-disease of the brain in which many neurons in the cerebrum die


-in the begining there is a gradual decline in mental abilities

encephalits

inflammation and infection of the brain caused by a virus

hematoma

localized collection of blood formed in the brain because of trauma

hydrocephalus

condition in which an excessive amount of cerebrospinal fluid is produced or the flow of cerbrospinal fluid is blocked

meningitis

inflammation and infection of the meninges of the brain or spinal cord caused by bacterium or virus

syncope

-faint


-temporary loss of consciousness

spinal cord injury(SCI)

-trauma to the spinal cord with a partial or complete transection of the cord



Bell's Palsy

weakness, drooping or actual paralysis of one side of the face because of inflammation of the facial nerve(cranial nerve VII)

hyperesthesia

conditon in which there is a heightned awareness and sensitivity to touch and increased response to painful stimuli

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)



neuralgia

-pain along the path of a nerve and its branches


-caused by an injury


-mild to severe pain

neuritis

-inflammation or infection of a nerve


-Polyneuritis is in many nerves or all the nerves

neuropathy

any type of disease or injury to a nerve

cerebrospinal fluid examination

test that visually examine the CFS for clarity and microscopically for cells and chemically for proteins and other substances

craniotomy

surgical incision into the cranium to expose the brain tissue

alg/o-

pain

astr/o-

starlike structure

caus/o-

burning

cephal/o-

head

cerebr/o-

cerebrum

encephal/o-

brain

mening/o-

meninges

myel/o-

bone marrow; spinal cord; myelin

neur/o-

nerve

phot/o-

light

phob/o-

fear; avoidance

clon/o-

rapid contracting and relaxing

comat/-o

unconsciousness

ependym/o-

cellular lining

gli/o-

cells that provide lining

epilept/o-

seizure

hydr/o-

water;fluid

infarct/o-

area of dead tissue

narc/o-

stupor; sleep

radicul/o-

spinal nerve root

rhiz/o-

spinal nerve root

syncop/o-

fainting

esthes/o-

sensation