Author: Anonymous

During the absolute refractory period the majority of sodium inactivation gates are closed and permeability to potassium is higher than at rest. 

If a neuron has low membrane conductance, it means that membrane resistance is high and that very few channels are open for a given ion.

To separate sodium and potassium currents in voltage clamp recordings you could add [toxin1] to pharmacologically block potassium currents or [toxin2] to pharmacologically block sodium currents (abbreviations ok). Name one animal you can obtain this deadly agent from [animal]. (1.5pts)

If [K+]i remains constant while we experimentally decrease [K+]o, the membrane potential will [depolarize / hyperpolarize / not change]. Why will you see this effect in Vm?  (2pts)

The glial cell type that function in maintaining the appropriate chemical environment for neuronal signaling are called ______________________________.

If [Na+]i remains constant while we experimentally decrease [Na+]o… What will happen to the peak of the action potential? It will become [dropdown].

If ECl- = -80 mV and we make the membrane potential more negative (Vm = -85 mV), what will the driving force be? Which will be larger Cl- influx / Cl- efflux?  Explain WHY? (2pts)

Which of the following statements is true regarding the two allowance procedures used to estimate bad debts?

Dance Town AcademyThe items listed below were identified while preparing a bank reconciliation for the company’s checking account as of March 31. Cash balance according to the general ledger ? Bank statement balance $18,500 Outstanding checks 2,700 Customer’s NSF check 350 Bank service charges 100 Deposits in transit 1,000 Interest earned on the checking account 60   Refer to Dance Town Academy. How will the interest earned on the checking account be handled on a bank reconciliation?

AT&U CompanyData for the year ended December 31 are presented below: Sales (credit) $2,500,000 Sales returns and allowances 50,000 Accounts Receivable (December 31) 640,000 Allowance for Doubtful Accounts        (Before adjustment at December 31) 20,000 Estimated amount of uncollected accounts based on aging analysis 45,000   Refer to AT&U Company. If the company uses the aging of accounts receivable approach to estimate its bad debts, what will be the net realizable value of its accounts receivable after the adjustment for bad debt expense?