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Exam 2
Review of Neuro Structure
17
Veterinary Medicine
Professional
02/13/2017

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Cards

Term
What are the components of the meninges?
Definition
-dura mater
-subdural space
-arachnoid mater
-subarachnoid space
-pia mater
Term
What are the components of the cerebrum?
Definition
-cerebral hemispheres
-separated by the longitudinal fissure
Term
What are the components of the cerebellum?
Definition
-hemisphers
-vermis
Term
What are sulci?
Definition
-depressions
Term
What are gyri?
Definition
-elevations
Term
If the cerebrum and cerebellum are removed, it reveals what? What are the parts?
Definition
-brain stem
-Interbrain: diencephalon
-Mid brain: metencepalon
-Medulla oblongata: myelencephalon
Term
What are the three major incidental BUT COMMON findings in meninges?
Definition
-canine senile meningeal fibrosis
-melanosis of pia mater and brain
-osseous metaplasia of dura
Term
What is canine senile meningeal fibrosis?
Definition
-tan fibrous thickenings over some of sulci
-INCIDENTAL FINDING IN OLD DOGS
Term
What is melanosis of pia mater and brain? WHich animals are most commonly affected?
Definition
-gray discoloration of brain (usually forebrain)
-common in black-faced animals
Term
What is spinal dural ossification or osseous metaplsia?
Definition
-multiple flat plaques of dural osseous metaplasia along spinal cord of old dogs
Term
What is the general shape and characteristics of neurons?
Definition
-pyramidal to rhomboidal shape w/ large nucleus & nucleolus
-cytoplasm contains Nissl substance w/ axon hillock
Term
What is the glia?
Definition
-glue b/n stuff
-astrocytes + oligodendroglia + microglia
Term
What is the neuropil?
Definition
-eosinophilic fibrillar material b/n cell nuclei composed of the cell processes of neurons and glia
Term
What are the functions of astrocytes?
Definition
-structure: maintain brain structure
-homeostasis: intracellular link b/n capillaries & brain cells
-immune regulation
Term
What doe oligos do?
Definition
-make and maintain CNS myelin
Term
What do Schwann cells do?
Definition
-provide myelin for peripheral nerves
-one to one
Term
What is the only glial cell not from neural crest origin? What do they do?
Definition
-microglia cells
-resident phagocytes
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