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Cards In This Set
| Front | Back |
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What are Glia?
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Non-neural cells in the NS
Functions include: -Support neurons physically -Supply neurons with nutrients and oxygen -Insulate neurons from each other -Protect neurons from pathogens and clean out dead neurons -Modulate/regulate neural activity |
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How many glia are there in the CNS?
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About 100 billion (1/2 of CNS volume, equal amount to neurons)
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What are the functions of astrocytes?
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-Structural support for neurons
-help create the blood brain barrier (BBB) -provide nutrients to neurons -modulate neural activity through reuptake of neurotransmitters and regulation of ion concentration |
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What are the functions of oligodendrocytes and Schwann cells?
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Wrap axons in mylin s to insulate them and speed conducation of action potentials
Schwann cells in PNS Oligodendrocytes in CNS |
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What are Ependymal Cells?
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 -CNS -line the ventricles -have cillia that move to aid in circulation of cSF -produce CSF |
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What are the functions of microglia?
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 Macrophages that devour and digest cellular debris (phagocytosis) |
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What are the Body Centric names for anatomical directions?
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Dorsal=back
Ventral=belly Rostral = nose Caudal = Tail --> this curves as you get up to the brain in humans. |
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What are the Space centric names for anatomical directions?
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Superior = above
Inferior = Below Anterior= before (front) Posterior = after (the back) |
 What kind of section is this? |
Horizontal/ Transverse / Axial
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 What kind of section is this? |
Coronal/Frontal
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 What kind of section is this? |
Saggital
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 In this midsagittal view of the brain, the area X is _____ to area Y? A. Dorsal and Caudal B. Dorsal and Rostral C. Ventral and Caudal D. Ventral and Rostral? |
B. Dorsal and Rostral
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Describe the Somatic system (of the PNS)
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-Voluntary control of action
-somatosensory (from skin to brain) Motor (from brain to muscles) |
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Describe the Autonomic system (of the PNS)
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Sympathetic and parasympathetic :
regulation of involuntary functions : -heart, Gut, Glands, etc |
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What are the two divisions of the PNS?
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Somatic and autonomic
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