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PHY2011 - Neuroscience of communication, sensory and control systems - S1 2025

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A Beaker is divided into two chambers, A and B, by a semi-permeable membrane lying across the middle of the beaker.

Chamber A contains the following concentration of ions:

{Na+} = 58 mM,, {K+} = 145 mM, {Cl-} = 100 mM, {A-} = 106 mM

Chamber B contains the following concentration of ions:

{Na+} = 200 mM,, {K+} = 10 mM, {Cl-} = 50 mM, {A-} = 152 mM

If the membrane is permeable only to K

+

, what is the transmembrane potential difference of Chamber A relative to Chamber B?

Answer in whole numbers, with no decimal places. In your answer give only the numerical (asbolute) value - i.e., ignore the sign of the answer.

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A Beaker is divided into two chambers, A and B, by a semi-permeable membrane lying across the middle of the beaker. Chamber A contains the following concentration of ions:

{Na+} = 38 mM, {K+} = 100 mM, {Cl-} = 110 mM

Chamber B contains the following concentration of ions:

{Na+} = 98 mM, {K+} = 10 mM, {Cl-} = 110 mM

If the membrane is permeable only to Na+, what is the transmembrane potential difference of Chamber A with respect to Chamber B?

Answer in whole numbers, with no decimal places. In your answer give only the numerical (asbolute) value - i.e., ignore the sign of the answer.

View this question

With age accommodation decreases and consequently

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In placing the tuning fork in the middle of your forehead, in a quiet room, if the sound is louder in one ear this means

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Which of the following statements about pitch of a sound is correct

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The only factor determining two point thresholds in a skin area is the density of receptors in that area.

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In the figure of the structure of the ear, the stapes is indicated by the letter

Image failed to load: Structure of the ear

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Testing hearing sensitivity through both air and bone conduction allows you to determine

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The connective tissue capsules of the Meissners corpuscles give these nerve endings Fast adaptation rates

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Ishihara charts are useful tests of

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