Term
Match the following neuron types with their location and function (some may have more than one correct answer):
1. Multipolar neurons
2. Bipolar neurons
3. Unipolar neurons
a. Sensory modality
b. Motor modaility
c. Commonly located in CNS and PNS sympathetic ganglion
d. Located in sensory ganglia (spinal ganglia)
e. Eye and nose |
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Definition
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Term
| Neuronal cell bodies usually have a (pale/dark) nucleoplasm suggesting there is abundant (heterochromatin/euchromatin). |
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Definition
| Neuronal cell bodies usually have a PALE nucleoplasm suggesting there is abundant EUCHROMATIN. |
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Term
Match the following structures to their locations (may have more than one answer).
1. Nissl substance
2. Golgi apparatus
3. Lipofuscin
4. Neurofilaments
5. abundant mitochondria
6. Cytoplasm
a. Cell body (soma)
b. Dendrite
c. Axon |
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Definition
1. A
2. B
3. B
4. A,B,C
5. A,C
6. A,B,C |
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Term
| What is the only organelle not present in dendrites? |
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Definition
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Term
Dendrites are (sheathed/unsheathed).
Match the 2 modality of dendrites with their ultrastructure.
1. Touch and temperature info
2. Pain info
a. surrounded by receptor end-organ
b. free/naked |
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Definition
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Term
Match the following descriptions of appearance with their correct organelle.
1. pale and suggesting abundant euchromatin
2. basophilic clumps or granules suggesting active protein synthesis
3. numerous stacks of flatenned cisternae and associated vesicles as a perinuclear, interlacing network
4. vesicle structure
5. unstained, vacuolated residue surrounding the shrunken axon
6. plane of section that includes the nucleus which encircles myelin or smallest diameter axons
a. lipofuscin pigment
b. Schwann cell
c. Myelin
d. Nucleus
e. Golgi app
f. Nissl substance |
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Definition
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Term
Match the following descriptions of ultrastructure with their correct organelle:
1. spiral wrapping of Schwann cell membrane around the axon appearing as a alternating lamellae of high and low electron density
2. intermediate filaments and microtubules
3. Small diameter fibers of PNS that don't contain spirals of unit membrane and simply lie in a groove-like recess along the surface of a Schwann cell
a. neurofibrils/neurofilaments
b. Neurilemma
c. Myelin sheath |
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Definition
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Term
Match the following components with the type of axoplasmic transport (may have more than one answer):
1. Dynein
2. Kinesin
3. Fast system
4. Slow system
5. Microtubules
a. Retrograde
b. Anterograde |
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Definition
1. A
2. B
3. A & B
4. B
5. A & B
Fast system is for the bidirectional transport of small and large molecules along the axon.
Slow system correlates to roughly the rate of axon growth. |
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Term
Match the following CNS glial cell with its function:
1. Astrocyte
2. Ependymal cell
3. Microglia
4. Oligodendrocyte
a. specialized macrophages capable of phagocytosis that protect neurons of the CNS
b. regulate the external chemical environment of neurons by removing excess ions (notably K+), and recycling neurotransmitters
c. create and secrete cerebrospinal fluid (CSF) and beat their cilia to help circulate the CSF; lines the cavities of CNS and makes up the walls of the ventricles
d. cells that coat axons in CNS w/ myelin to produce a myelin sheath |
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Definition
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