(Solved) Drag the labels onto the table to indicate which type(s) of gated ion channels are found in each mem

kml2963

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10 years ago Edited: 10 years ago, kml2963

Drag the labels onto the table to indicate which type(s) of gated ion channels are found in each mem

Drag the labels onto the table to indicate which type(s) of gated ion channels are found in each membrane associated with a chemical synapse. (The letters in the table refer to the lettered structures in the image above.) Labels can be used once, more than once, or not at all.

Post Merge: 10 years ago

these are the categories
A. synaptic terminal

B. presynaptic membrane

C. postsynaptic membrane

D. plasma membrane or cell body

e. axon hillock

these are the answer choices:
ligand -gated
none
voltage gated Na+ & voltage gated K+
voltage gated Na+, voltage gated K+ & voltage gated Ca2+

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Answer accepted by topic starter

zoeksyrianos

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10 years ago

2 Votes

jack17, Michelle Kaondera

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georgie97

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10 years ago

synaptic terminal: voltage-gated Na+, voltage-gated K+
presynaptic membrane: voltage gated Na+, voltage gated K+ & voltage gated Ca2+
postsynaptic membrane: ligand -gated
plasma membrane of cell body: none
axon hillock: voltage gated Na+ & voltage gated K+

9 Votes

detriment, portabellopig, erinwelsh, lisan, KalFeld, ijm, bio_man, biolman, reefd

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StephBains20

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10 years ago

Thanks!!

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emkaran

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10 years ago

Thank you

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toheedak

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10 years ago

Voltage-gated Na+ and K+ channels are found only in membranes that propagate action potentials. Membranes found in a chemical synapse that propagate action potentials are the membrane of the synaptic terminal, including the presynaptic membrane, and the membrane of the axon hillock (and axon) of the postsynaptic neuron.

Voltage-gated Ca2+ channels, which help regulate the release of neurotransmitter from the presynaptic neuron, are found only in the presynaptic membrane. Ligand-gated ion channels, which open in response to neurotransmitter in the synaptic cleft, are found only in the postsynaptic membrane.

Diagram of a chemical synapse showing voltage-gated Ca2+ channels, voltage-gated Na+ channels, and voltage-gated K+ channels in the presynaptic membrane. Ligand-gated ion channels are shown in the postsynaptic membrane.

Finally, there are no gated ion channels in the plasma membrane of the cell body of the postsynaptic cell. For this reason, postsynaptic potentials are not propagated along the membrane of the postsynaptic cell in the same way that an action potential is propagated along a membrane containing voltage-gated Na+ and K+ channels.

2 Votes

skymay, ebio

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mladend1

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10 years ago

thanks a lot. This was really helpful

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naz-is-me

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9 years ago

Thanks so much this was a great help.

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JennJenn10

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4 years ago

thank you!

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Pablo R.

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4 years ago

Thank you!

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Michelle K.

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#10

3 years ago

thank you

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