Shared Flashcard Set

Details

Test 2 - Nervous System
Dr. Newman's notes
41
Histology
Professional
10/10/2011

Additional Histology Flashcards

 


 

Cards

Term
Neurons
Definition
the main anatomic & functional unit
Term
Neuroglia/Neuroglial Cells
Definition
a variety of cells that provide support, protection and/or nourishment
Term
Neuropil
Definition
the stroma of the CNS
Term
Central Nervous System (CNS)
Definition
brain & spinal cord
Term
Peripheral Nervous System (PNS)
Definition
nerves, cell bodies, nerve terminals
Term
Neurons
Definition
derived from neuroblasts
Term
Neurons
Definition
maintain their own health & welfare
Term
Neurons
Definition
facilitate all conduction of information
Term
Cell Body of Neuron
Definition
nucelus, nucleolus, granular cytoplasm
Term
Nissl Substance
Definition
special, rough ER within neurons
Term
Axons
Definition
single processes from axon hillock, contain no Nissl substance
Term
Axons
Definition
smooth surface, uniform diameter
Term
Dendrites
Definition
carries information towards the cell
Term
Dendrites
Definition
increase surface area
Term
Oligodendrocytes
Definition
small cell with round nuclues, little cytoplasm; numerous; responsible for myelination in CNS
Term
Astrocytes
Definition
contribute to blood-brain barrier; provide structural support; assist in scarring
Term
Ependymal Cells
Definition
ciliated; line ventricles & central canal; transport CSF
Term
Microglial Cells
Definition
"dish rag" or "drum stick" appearance; play role in clean up & injury repair; capable of phagocytosis
Term
Ganglion Cells
Definition
neurons of PNS
Term
Ganglia
Definition
acuumulation of neurons (ganglion cells)
Term
Schwann Cells
Definition
responsible for myelination of PNS
Term
Nodes of Ranvier
Definition
sites where Schwann cells are discontinuous
Term
Epineurium
Definition
encases entire nerve
Term
Perineurium
Definition
surrounds fascicles of nerve fibers
Term
Endoneurium
Definition
surrounds individual nerve fibers
Term
White Matter
Definition
axons
Term
Gray Matter
Definition
neurons
Term
Cerebral Cortex
Definition
largest part; controls motor function
Term
Cerebellum
Definition
three layers: outer molecular, Purkinje, deep granular; controls coordinated movement
Term
Brainstem
Definition
contains respiratory & cardiac centers
Term
Butterfly Region (Inner) of SC
Definition
gray matter
Term
Outer Region of SC
Definition
white matter
Term
Blood-Brain Barrier
Definition
regulates passage of substances into brain
Term
Meninges
Definition
encase CSF & provide vascular supply
Term
Dura
Definition
tough outer CT of meninges; separated from vertebrae by epidural space
Term
Arachnoid
Definition
shock-absorbing membrane of meninges; contains CSF
Term
Pia
Definition
protects inital part of vessels; extends into depressions of brain & spinal cord
Term
Choroid Plexus
Definition
produces CSF
Term
Ependymal Cells
Definition
closely associate with vessels to form choroid plexus
Term
Lamina Epithelialis
Definition
basement membrane of choroid plexus
Term
Tela Choroidosis
Definition
vasculature of choroid plexus
Supporting users have an ad free experience!