cells of the nervous system Flashcards

synapses: explain the distinguishing features of axo-dendritic, axo-somatic and axo-axonic synapses

1
Q

bouton

A

common synapse at axon terminal

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2
Q

varicosities

A

swellings along neurone containing vesicles with neurotransmitter

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3
Q

synaptic structure: density

A

increased proteins; abundant mitochondria

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4
Q

why do synapses have increased proteins

A

release of vesicle and action of neurotransmitter (ion channels, pumps, receptors)

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5
Q

why do synapses have abundant mitochondria

A

ion pumping and synaptic transmission; sensitive to oxygen deprivation

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6
Q

where are synaptic vesicles packaged

A

Golgi

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7
Q

what transport mechanism ships synaptic vesicles

A

fast anterograde transport

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8
Q

synaptic vesicle association with plasma membrane

A

specialised mechanisms

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9
Q

synaptic organisation

A

neurones receive multiple synaptic inputs; use diversity of chemical transmitters to be excitatory or inhibitory

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10
Q

what is neuronal integration

A

competing inputs are integrated in postsynaptic neuone

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11
Q

types of synapse

A

axo-dendritic, axo-somatic, axo-axonic

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12
Q

axo-dendritic synapse function

A

commonest; excitatory

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13
Q

axo-somatic synapse function

A

often inhibitory

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14
Q

axo-axonic synapse function

A

modulatory

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