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32 Cards in this Set
- Front
- Back
Involved in voluntary and involuntary actions within the body |
Nervous System |
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Contains brain and spinal cord |
Central Nervous System |
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Involved in processing incoming info and organizes/determines motor outputs |
Central Nervous System |
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Carries info into (CNS) |
Peripheral Nervous System |
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Takes away motor command out of CNS and into periphery |
Peripheral Nervous System |
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Involved in communication of info, processing incoming sensory info and initiating changes in body |
Neurons |
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3 different types of neurons |
1. Afferent 2. Interneurons 3. Efferent |
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Carries info into CNS |
Afferent neurons |
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Neurons completely contained with CNS and processes info |
Interneurons |
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Takes info away from CNS |
Efferent neurons |
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Structure of a neuron |
1. Dendrites 2. Soma 3. Axon 4. Axon hillcock 5. Axon terminal |
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- thin cell - process where info enters cell |
Dendrites |
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- Contains standard cell components e.g organelles |
Soma |
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Place where glycolysis and protein synthesis takes place |
Soma |
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-long projections -quickly moves info from one end of cell to other |
Axon |
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Important in initiating fast conduction of info down length of axon |
Axon hillcock |
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Where info leaves cell and influences whatever cell is next in line |
Axon terminal |
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Used by neurons to move items from axon terminal to soma |
Cytoskeleton |
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Motor proteins use microtubules to shuttle various items |
Cytoskeletal transport |
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-provide structural support for axon and "roads" for intercellular transport - run down length of axon |
Microtubules |
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2 types of transport |
Anterograde and Retrograde |
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Items moving away from soma are carried by motor proteins down cytoskeletal elements |
Anterograde Transport |
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Items moving toward soma carried by motor proteins |
Retrograde Transport |
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Insulate axons by wrapping in rich cellular projections |
Myelinating cells |
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Myelinating axons in (PNS) |
Schwann Cells |
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2 types of transport |
Anterograde and Retrograde |
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-provide support for neurons and help effectively do their job -found in Nervous System |
Glial cells |
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Insulate axons by wrapping in rich cellular projections |
Myelinating cells |
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Myelinating cells in (CNS) |
Oligodendrocytes |
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2 types of myelinating cells |
Oligodendrocytes and Schwann cells |
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-help provide proper nutrition and waste clearance for neurons -help provide proper extra cellular fluid ion concentrations |
Astrocytes |
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-help clear cellular debris and degrade damaged neurons -immune like cells found in Nervous System |
Microglia |