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Systems Test 4
MA-Central Nervous System
9
Medical
Graduate
04/26/2009

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Cards

Term
Organization of brain
Definition
1. Cerebrum
a. Cerebral hemispheres
1. Cerebral cortex
2. Basal ganglia
b. Diencephalon
1. Thalamus
2. Hypothalamus

2. Cerebellum

3. Brainstem
a. Midbrain
b. Pons
c. Medulla
Term
Three embryonic divisions of the brain
Definition
1. Prosencephalon
a. Telencephalon
b. Diencephalon

2. Mesencephalon

3. Rhombencephalon
a. Metenchephalon
b. Mylencephalon
Term
What is neuropil and where is it found?
Definition
It is the complexx array of axons, dendrites, and synapses.

It is found in the gray matter
Term
Gray matter vs. White matter?
Definition
Gray matter is all the neurons and synapses.

White matter is the complex network created by myelinated fibers.
Term
What is the choroid plexus?
Definition
It is formed in several regions of the brain where the brain tissue is so thin that pia and ependyma come into contact and blood vessels invade, forminga rich capillary bed that is the source of cerebral spinal fluid
Term
Astrocytes
Definition
Provide nutritional support, regulate the microenvironment, and help form the blood brain barrier
Term
Microglia
Definition
Perform phagocytosis to remove debris
Term
Ependyma
Definition
neuroepithelial cells that form the ventricular lining
Term
What is gliosis?
Definition
In response to injury, glial cells proliferate and form scar tissue
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