Term
| What germ layer does nervous tissue arise from? |
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Definition
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Term
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Definition
| Brain, brain stem, spinal chord |
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Term
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Definition
| Spinal, cranial, and autonomic nerves |
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Term
| What is the general difference in roles of CNS and PNS |
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Definition
PNS= sense and gather info from environment
CNS= coordination of sensory info and motor coordination |
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Term
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Definition
| Dense CT prevent physical trauma |
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Term
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Definition
| Loose CT for CSF circulation |
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Term
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Definition
| Vascular layer carries blood vessels into CSF |
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Term
| Difference between white and grey matter? |
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Definition
White=densely packed with fibers
Gray= densely packed with cells |
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Term
| True or false: Glia is a nervous tissue cel type |
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Definition
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Term
| What are the nervous cell types? |
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Definition
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Term
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Definition
non-exciteable
enhance transmission of nerve impulse |
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Term
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Definition
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Term
| What are the types of neural fibers? |
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Definition
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Term
| Name the parts of a neuron. |
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Definition
Soma
Dendrites
Axon
Axon Hillock
Axon terminal |
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Term
| What structures contained in soma? |
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Definition
Nucleus with very distinct nucleolus
Lots of euchromatin
Nissl Substance (ribosome-rich RER)
sytoskeleton
golgi
mitochondria |
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Term
| What structures in dendrite? |
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Definition
| similar to soma, but no golgi |
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Term
| What elements are in the axon? |
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Definition
No RER, but SER
cytoskeletal elements for transporting vesicles |
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Term
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Definition
Sends signal to neuron, muscle, gland, cell etc.
Lots of vesicles and mitochondria |
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Term
| What are the parts of a synapse? |
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Definition
presynaptic terminal
synaptic cleft
post-synaptic membrane |
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Term
| What are the different types of glial cells? |
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Definition
Mary Ate Oranges Everyday
Microglia- macrophage
Astrocyte- conduct nutrient flow from blood to neurons
Oligodendrocyte- myelination
Ependymal- produce CSF |
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Term
| BLood Brain barrier is composed of... |
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Definition
Capillary endothelium
Basement Membrane
Astrocyte |
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Term
| Whats the difference in PNS vs CNS myelination? |
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Definition
CNS= oligodendrocytes wrap around many nerve fibers
PNS= single Schwann cell wraps around a nerve fiber |
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Term
| List layers of CT wrapping the nerves |
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Definition
Endoneurium- wrap nerve fibers
Perineurium- wrap fasicles
Epineurium- wrap entire nerve |
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Term
| What layers consist of the blood-CSF barrier |
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Definition
capillary endothelium
Pia mater
ependymal cells |
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Term
| True/False: Ganglia are clusters of cell bodies within the CNS |
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Definition
| false: clusters of cell bodies outside the CNS |
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Term
| What are nuclei (nerve tissue) |
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Definition
| Aggregations of cell body within the white atter of cNS |
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Term
| What are ganglionic cells? |
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Definition
| comprise peripheral ganglia with large round neurons |
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Term
| What are satellite cells? |
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Definition
| comprise peripheral ganglia. Support ganglionic cells |
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