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PNB Bonus Exam questions with complete solutions

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PNB Bonus Exam questions with complete solutions

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  • pnb bonus exam questions with complete solutions

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PNB Bonus Exam questions with
complete solutions

Propagation of an action potential in a myelinated axon involves which of the following? - ANS
✔✔All of the above



The central nervous system includes the ______. - ANS ✔✔All of the above



The concentration of cation X(+) is 500mM inside the cell, and 100mM outside of the cell.
Assuming that the membrane is permeable to X: - ANS ✔✔The equilibrium potential for X
would be negative



The membrane is selectively permeable to all of the following EXCEPT: - ANS ✔✔oxygen



Activating a muscarinic receptor coupled to which G protein would cause calcium to be released
- ANS ✔✔G-Q



Sympathetic preganglionic neurons release the neurotransmitter _____ at synapses lactoed in
______. - ANS ✔✔ACh the collateral ganglia



An example of a closed-loop, positive feedback system is in the human body: - ANS ✔✔During
childbirth



The phospholipid bilayer of the cell membrane is arranged so that the heads of the
phospholipid molecule face the extracellular and intracellular fluids; and the hydrophobic tails
face each other. - ANS ✔✔True
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