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course 103
the nervous system
87
Other
Not Applicable
03/24/2009

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Term
CEREBRUM
Definition
LARGEST PART OF THE BRAIN; "THINKING" AREA. RESPONSIBLE FOR VOLUNTARY MUSCULAR ACTIVITY, VISION, SPEECH, TASTE, HEARING, THOUGHT, MEMORY
Term
CEREBELLUM
Definition
FUNCTIONS TO COORDINATE VOLUNTARY MOVEMENTS AND TO MAINTAIN BALANCE AND POSTURE
Term
MEDULLA OBLONGATA
Definition
CONNECTS THE SPINAL CORD WITH THE REST OF THE BRAIN (IN BRAIN STEM); CONTROLS BREATHING, HEARTBEAT, AND SIZE OF BLOOD VESSELS; NERVE FIBERS CROSS OVER HERE. (LOCATED JUST ABOVE THE SPINAL CORD)
Term
CSF
Definition
CEREBRAL SPINAL FLUID; FLUID THAT CIRCULATES THROUGHOUT THE BRAIN AND SPINAL CORD
Term
DURAMATER
Definition
THICK, OUTERMOST LAYER OF THE MENINGES SURROUNDING AND PROTECTING THE BRAIN AND SPINAL CORD
Term
BRAINSTEM
Definition
LOWER PORTION OF THE BRAIN THAT CONNECTS THE CEREBRUM WITH THE SPINAL CORD. THE PONS AND MEDULLA OBLONGATA ARE PART OF THE BRAINSTEM
Term
CEREBRAL CORTEX
Definition
OUTER REGION OF THE CEREBRUM; CONTAINING SHEETS OF NERVE CELLS; GRAY MATTER OF THE BRAIN
Term
CNS
Definition
CENTRAL NERVOUS SYSTEM; BRAIN AND THE SPINAL CORD
Term
MENINGES
Definition
THREE PROTECTIVE MEMBRANES THAT SURROUND THE BRAIN AND SPINAL CORD.
Term
GANGLIA
Definition
GANGLION (SINGLE) PLURAL=GANGLIA; COLLECTION OF NERVE CELL BODIES IN THE PERIPHERAL NERVOUS SYSTEM
Term
MYELIN SHEATH
Definition
WHITE FATTY TISSUE THAT SURROUNDS, AND INSULATES THE AXON OF A NERVE CELL. MYELIN SPEEDS IMPULSE CONDUCTION ALONG AXONS
Term
PLEXUS
Definition
PLURAL=PLEXUSES; LARGE, INTERLACING NETWORK OF NERVES. LUMBOSACRAL, CERVICAL, AND BRACHIAL PLEXUSES.
Term
NEURON
Definition
NERVE CELL THAT CARRIES IMPULSES THROUGHOUT THE BODY.
Term
SYNAPSE
Definition
SPACE THROUGH WHICH A NERVOUS IMPULSE IS TRANSMITTED FROM ONE NEURON TO ANOTHER OR FROM A NEURON TO ANOTHER CELL, SUCH AS MUSCLE OR GLAND CELL.
Term
MYEL/O
Definition
SPINAL CORD
Term
MENING/O
Definition
MEMBRANES
Term
ENCEPHAL/O
Definition
BRAIN
Term
NEUR/O
Definition
NERVE
Term
DUR/O
Definition
DURA MATER
Term
VAG/O
Definition
VAGUS NERVE (10TH CRANIAL NERVE)
Term
ESTHESI/O
Definition
FEELING, NERVOUS SENSATION
Term
-ALGIA
Definition
PAIN
Term
-ALGESIA
Definition
SENSITIVITY TO PAIN
Term
-PLEGIA
Definition
PARALYSIS
Term
radicul/o
Definition
nerve root (of spinal nerves)
Term
cerebr/o
Definition
cerebrum
Term
dur/o
Definition
dura mater
Term
epilepsy
Definition
chronic brain disorder characterized by recurrent seizure activity
Term
myasthenia gravis
Definition
autoimmune neuromuscular disorder characterized by weakness of voluntary muscles
Term
herpes zoster
Definition
viral infection affecting peripheral nerves
Term
meningitis
Definition
inflammation of the meninges; leptomeningitiscerebra
Term
cerebral concussion
Definition
temporary dysfunction (brief loss of consciousness) after injury, usually clearing witin 24 hours
Term
cerebral contusion
Definition
bruising of brain tissue as a result of direct trauma to the head; neurologic deficits persist longer than 24 hours
Term
spina bifida
Definition
congenital defects in the lumbar spinal column caused by imperfect union of vertebral parts (neural tube defect)
Term
CVA
Definition
CEREBROVASCULAR ACCIDENT; DISRUPTION IN THE NORMAL BLOOD SUPPLY TO THE BRAIN; STROKE
Term
ANEURYSM
Definition
ENLARGED, WEAKENED AREA IN AN ARTERIAL WALL, WHICH MAY RUPTURE, LEADING TO HEMORRHAGE AND CVA.
Term
ASTROCYTOMA
Definition
MALIGNANT TUMOR OF ASTROCYTES (GLIAL BRAIN CELLS)
Term
TIA
Definition
TRANSIENT ISCHEMIC ATTACK
Term
DEMYELINATION
Definition
DESTRUCTION OF MYELIN ON AXONS OF NERVES (AS IN MULTIPLE SCLEROSIS)
Term
EMBOLUS
Definition
A MASS OF MATERIAL TRAVELS THROUGH THE BLOOD STREAM AND SUDDENLY BLOCKS A VESSEL
Term
BLAST
Definition
IMMATURE CELLS (AS IN GLIOBLASTOMA)
Term
OCCLUSION
Definition
BLOCKAGE
Term
PALLIATIVE
Definition
RELIEVING SYMPTOMS WITHOUT CURING
Term
-PHASIA
Definition
SPEECH
Term
-LEPSY
Definition
SEIZURE
Term
THYMECTOMY
Definition
REMOVAL OF THE THYMUS GLAND; USED AS TREATMENT FOR MYASTHENIA GRAVIS
Term
HERPES ZOSTER
Definition
HERPES VIRUS THAT CAUSES SHINGLES
Term
CEREBRAL ANGIOGRAPHY
Definition
XRAY IMAGING OF THE ARTERIAL BLOOD VESSEL SYSTEM IN THE BRAIN AFTER INJECTION OF CONTRAST MATERIAL
Term
EEG
Definition
RECORDING OF THE ELECTRICAL ACTIVITY OF THE BRAIN; ELECTROENCEPHALOGRAPHY
Term
LUMBAR PUNCTURE
Definition
CSF IN WITHDRAWN FROM BETWEEN TWO LUMBAR VERTEBRAE
Term
LUMBAR PUNCTURE
Definition
CSF IN WITHDRAWN FROM BETWEEN TWO LUMBAR VERTEBRAE
Term
HYRDROCEPHALUS
Definition
ABNORMAL ACCUMULATION OF FLUID(CSF) IN THE BRAIN
Term
AXON
Definition
PART OF THE NEURON THAT CONDUCTS IMPULSES AWAY FROM THE CELL BODY; EACH CELL HAS ONLY ONE
Term
CELL BODY
Definition
PART OF THE NEURON THAT ACTS AS A SENDING AND RECEIVING CENTER, CARRIES ON METABOLISM AND STORES ENERGY
Term
DENDRITE
Definition
PART OF THE NEURON THAT CARRIES IMPULSES TO THE CELL BODY
Term
GANGLION
Definition
MASS OF NERVE TISSUE, PRINCIPALLY NERVE CELL BODIES, OUTSIDE THE CENTRAL NERVOUS SYSTEM
Term
MYONEURAL JUNCTION
Definition
ENDING OF A NERVE AT A MUSCLE
Term
NERVE
Definition
BUNDLE OF NERVE FIBERS, BLOOD VESSELS, AND CONNECTIVE TISSUE OUTSIDE THE CNS.
Term
NERVE FIBERS
Definition
THREADLIKE PROJECTIONS OF CYTOPLASM FROM THE CELL BODY OF A NEURON; AXONS AND DENDRITES
Term
NEUROGLIA
Definition
SUPPORTING STRUCTURE FOR NERVE TISSUE CONSISTING OF BLOOD VESSESS, CONNECTIVE TISSUE, AND SPECIALIZED CELLS FOUND ONLY IN THE BRAIN AND SPINAL CORD
Term
NEURON
Definition
BASIC NERVE CELL
Term
PLEXUS
Definition
NETWORK OF NERVES
Term
SYNAPSE
Definition
JUNCTION OF AN AXON AND ONE OR MORE DENDRITES WHICH TRANSMITS NERVE IMPULSES IN ONE DIRECTION ONLY
Term
AFFECTORS
Definition
CELLS FUNCTIONING IN THE RECEPTION OF STIMULI; THE RECEIVING END OF SENSORY NERVES
Term
ANS
Definition
AUTONOMIC NERVOUS SYSTEM; AUTOMATICALLY REGULATES THE ACTION OF THE GLANDS, SMOOTH MUSCLE OF HOLLOW ORGANS, AND THE HEART -NONVOLUNTARY
Term
NERVOUS SYSTEM
Definition
SYSTEM OF BODY DEALING WITH BRAIN AND SPINAL CORD
Term
CNS
Definition
CONSISTS OF NERVE TISSUE FROM THE BRAIN AND SPINAL CORD- CONTROLS VOLUNTARY ACTS
Term
CEREBRAL CORTEX
Definition
OUTER LAYER OF GRAY MATTER OF THE CEREBRUM
Term
CSF
Definition
WATERY FLUID PROTECTING THE BRAIN AND SPINAL CORD
Term
EFFECTORS
Definition
NERVE ENDINGS THAT CARRY OUT ACTIONS
Term
FISSURE
Definition
A DEEP GROOVE OR FURROW IN AN ORGAN SUCH AS THE BRAIN
Term
GRAY MATTER
Definition
NERVE TISSUE OF A GRAYISH COLOR CONSISTING PRIMARILY OF NONMYELINATED NERVE FIBERS; CONTAINS LARGE NUMBERS OF CELL BODIES OF NEURONS
Term
HEMISPHERE
Definition
EITHER HALF OF THE CEREBRUM OR CEREBELLUM
Term
LOBE
Definition
A FAIRLY WELL-DEFINED PART OF AN ORGAN SUCH AS THE BRAIN SEPARATED BY BOUNDARIES
Term
MENINGES
Definition
THE TOUGH, 3 LAYERED MEMBRANE PROTECTING THE SPINAL CORD AND THE BRAIN
Term
MYELINATED
Definition
COVERED WITH MYELIN
Term
REGENERATED
Definition
REPAIR, GROWTH, OR RESTORATION OF A PART
Term
STIMULUS
Definition
ANY AGENT OR INFLUENCE THAT PRODUCES A RESPONSE OR INCREASE IN ACTIVITY IN LIVING PROTOPLASM
Term
SULCUS
Definition
A SLIGHT GROOVE, FURROW, OR DEPRESSION IN AN ORGAN, ESPECIALLY THE BRAIN
Term
WHITE MATTER
Definition
NERVE TISSUE CONSISTING OF MYELINATED NERVE FIBERS
Term
PNS
Definition
PROVIDES INPUT FROM SENSORY RECEPTORS TO THE CNS AND OUTPUT FROM THE CNS TO NTHE EFFECTORS
Term
SENSORY NEURONS
Definition
ALSO CALLED AFFERENT OR RECEPTOR, RECEIVE MESSAGES FROM ALL PARTS OF THE BODY AND TRANSMIT THEM TO THE CNS, CONTROLLED BY THE THALAMUS
Term
CONNECTING NEURONS
Definition
ALSO CALLED CENTRAL OR INTERNUNCIAL, CONDUCT MESSAGES OR IMPULSES FROM SENSORY TO MOTOR NEURONS, FOUND ONLY IN CNS
Term
MOTOR NEURONS
Definition
ALSO CALLED EFFERENT, LOCATED IN MUSCLES OR GLANDS, TRANSMIT MESSAGES FROM THE CNS TO ALL PARTS OF THE BODY, CONTROLLED BY FRONTAL LOBE OF BRAIN
Term
MYELIN SHEATH
Definition
FATTY COVERING WHICH PROVIDES INSULATION AND SPEEDS IMPULSE CONDUCTION
Term
AXIS CYLINDER
Definition
CENTRAL CORE OF JELLY-LIKE MATERIAL
Term
NEURILEMMA
Definition
THIN MEMBRANE WITH NUCLEI CALLED SCHWANN CELLS COMPLETELY COVERING THE NERVE FIBER; REGENERATES NERVE FIBERS
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