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Nervous system
terms
59
Anatomy
Undergraduate 1
02/26/2011

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Term
Saltatory Conduction
Definition
Skips over Myelinated Part
Term
EPSP
Definition
Excitatory-Depolarization
Term
IPSP
Definition
Inhibitory-repolarization
Term
Satellite Cells
Definition
Cells in the PNS which surround cell bodies of neurons which are grouped in ganglia.
Term
Association Tracts
Definition
Fiber tracts that allow neurons within the same cerebral hemisphere to communicate.
Term
Meninges
Definition
Outer covering of brain. Dura Mater, Arachnoid Mater, and Pia Mater.
Term
5 Lobes of cerebral hemisphere
Definition
Frontal, Parietal, Temporal, Occipital, Insula
Term
Basal Nuclei
Definition
Caudate, Putamen, Globus Pallidus
Term
Diencephalon
Definition
Thalamus, Hypothalamus, Epithalamus
Term
Corpora Quadrigemina
Definition
mediates reflexes; located in the midbrain
Term
Brain Stem
Definition
Midbrain, Pons, Medulla Oblongata
Term
Decussation of the Pyramids
Definition
Crossing fibrous in the Medulla Oblongata
Term
Limbic System
Definition
"feelings" Amygdala and Cingulate gyrus
Term
Reticular Activating System
Definition
filters out unimportant stimuli to the brain. Inhibited by sleep, depressed by drugs/alcohol.
Term
Reticular Activating System
Definition
filters out unimportant stimuli to the brain. Inhibited by sleep, depressed by drugs/alcohol.
Term
Blood Brain Barrier
Definition
maintains a stable environment for brain
Term
Parkinson's
Definition
Degeneration of dopamine releasing neurons over activity in the Basal Nuclei.
Term
Huntington's
Definition
Degeneration of the basal nuclei.
Term
Conus Medullaris
Definition
rounded end of the spinal cord
Term
Filum Terminale
Definition
Fibrous extension of conus medullaris to the coccyx.
Term
Denticulate Ligaments
Definition
Secure spinal cord to dura mater.
Term
Cauda Equina
Definition
Nerve roots. Horse tail.
Term
Gray commisure
Definition
enclosing central canal of spinal cord; connects the two parts.
Term
Antereolateral pathway
Definition
Spinal thalamic. Pain, temp, coarse touch. Decussate at spinal cord
Term
Spinocerebral pathway
Definition
Does not decussate.
Term
Ventral horn
Definition
Gray matter of spinal cord. Contains cell bodies of somatic motor neurons.
Term
EEG
Definition
Recording of brain's electrical activity.
Term
Nerve
Definition
parallel bundles of axons enclosed by wrapping of CT.
Term
Endoneurium
Definition
layer enclosing axon
Term
Fascicles
Definition
Groups of fibers bound into bundles.
Term
Perineurium
Definition
CT wrapping that binds groups of fibers into fascicles.
Term
Epineurium
Definition
Tough fibrous sheath enclosing all fascicles.
Term
Epineurium
Definition
Tough fibrous sheath enclosing all fascicles.
Term
Ganglia
Definition
Collection of nerve cell bodies associated with nerves in the PNS.
Term
Dorsal Root Ganglion
Definition
Cell bodies of sensory neurons, central axons enter the spinal cord.
Term
Wallerian Degeneration
Definition
The axon and sheath distal to the injury will disintegrate. Schwann cells secrete chemicals to guide new axon sprouts to their original contact.
Term
(I)Olfactory
Definition
Smell
Term
(II)Optic
Definition
Sensory nerve of vision
Term
(III)Oculomotor
Definition
eye mover
Term
(IV)Trochlear
Definition
"pulley" innervates an extrinsic eye muscle
Term
(V)Trigeminal
Definition
Sensory innervation to face; motor to chewing.
Term
(VI)Abducens
Definition
Turns eyeball laterally.
Term
(VII)Facial
Definition
Facial Expressions
Term
(VIII)Vestibulochlear
Definition
Hearing and Equilibrium
Term
(IX)Glossopharyngeal
Definition
Tongue and pharynx.
Term
(X)Vagus
Definition
Wanderer; only cranial nerve to extend past head and neck.
Term
(XI)Accessory
Definition
Motor supply to SCM and trapezii.
Term
(XII)Hypoglossal
Definition
Tongue mover.
Term
Phernic Nerve
Definition
Goes to diaphragm; breathing; C3, C4, C5
Term
Median
Definition
Carpal Tunnel
Term
Ulnar
Definition
Funny Bone
Term
Sacral Plexus
Definition
L4-S4 Largest Branch:Sciatic Nerve
Term
Brachial Plexus
Definition
C5-C8 and T1
Term
Lumbar Plexus
Definition
L1-L4
Term
Hilton's Law
Definition
Any nerve serving a muscle that produces movement at a joint also innervates that joint and skin over said joint.
Term
Neuromuscular Junction
Definition
nerve meets muscle;Acetylcholine
Term
ANS
Definition
Motor Neurons that innervate smooth muscle, cardiac, and glands.
Term
Sympathetic
Definition
ANS fight/flight
Term
Parasympathetic
Definition
ANS rest/digest
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