1
NURS 5315 Module 1 Questions with Correct
Answers | Updated (100% Correct Answers)
Cell membrane composed of Answer: phospholipids, cholesterol,
glycolipid
Role of phospholipids Answer: repairing the cell by folding
Cell membrane is highly permeable to Answer: CO2, O2, fatty acids,
steroid hormones
Resting membrane potential Answer: slight difference in charge
between ICF and ECF. Charge is -70 to -85mV
Action potential Answer: sudden impulse and rapid change in
resting membrane potential.
Depolarization Answer: charge is moving closer to zero and
becoming more positive
Threshold potential Answer: occurs when the inside of the cell does
not change at least 15 to 20mV and the action potential is not
successfully reached
Repolarization Answer: occurs when the charge reaches zero and
then returns back to the baseline of -70 to -85mV
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, 2
Refractory period Answer: cell membrane resists repolarization and
cannot depolarize
Absolute refractory period Answer: membrane does not respond to
any stimulus
Relative refractory period Answer: repolarization only occurs to very
strong stimulus
Hyperpolarized Answer: charge is greater than -85mV. Cell is less
excitable
Hypopolarized Answer: charge is less than -65mV. Cell is very
excitable
Hypokalemia affects of resting membrane potential Answer:
hyperpolarized, less excitable
Decrease in neuromuscular excitability, weakness, smooth muscle
atony, paresthesias and cardiac dysrhythmias
Hyperkalemia affects of resting membrane potential Answer:
hypopolarized, more excitable
Peak T waves, K+ increases, widening QRS, cardiac standstill
Hypercalcemia affects of resting membrane potential Answer:
hyperpolarized, less excitable
© 2025 All rights reserved
NURS 5315 Module 1 Questions with Correct
Answers | Updated (100% Correct Answers)
Cell membrane composed of Answer: phospholipids, cholesterol,
glycolipid
Role of phospholipids Answer: repairing the cell by folding
Cell membrane is highly permeable to Answer: CO2, O2, fatty acids,
steroid hormones
Resting membrane potential Answer: slight difference in charge
between ICF and ECF. Charge is -70 to -85mV
Action potential Answer: sudden impulse and rapid change in
resting membrane potential.
Depolarization Answer: charge is moving closer to zero and
becoming more positive
Threshold potential Answer: occurs when the inside of the cell does
not change at least 15 to 20mV and the action potential is not
successfully reached
Repolarization Answer: occurs when the charge reaches zero and
then returns back to the baseline of -70 to -85mV
© 2025 All rights reserved
, 2
Refractory period Answer: cell membrane resists repolarization and
cannot depolarize
Absolute refractory period Answer: membrane does not respond to
any stimulus
Relative refractory period Answer: repolarization only occurs to very
strong stimulus
Hyperpolarized Answer: charge is greater than -85mV. Cell is less
excitable
Hypopolarized Answer: charge is less than -65mV. Cell is very
excitable
Hypokalemia affects of resting membrane potential Answer:
hyperpolarized, less excitable
Decrease in neuromuscular excitability, weakness, smooth muscle
atony, paresthesias and cardiac dysrhythmias
Hyperkalemia affects of resting membrane potential Answer:
hypopolarized, more excitable
Peak T waves, K+ increases, widening QRS, cardiac standstill
Hypercalcemia affects of resting membrane potential Answer:
hyperpolarized, less excitable
© 2025 All rights reserved
