NR 507 Week 2 Quiz
NR 507: Advanced Pathophysiology
(Secure HIGHSCORE)
, Question 1
pts
In hyperkalemia, cardiac rhythm changes are a direct result of
Correct!
cardiac cell hypopolarization.
cardiac cell repolarization.
cardiac cell hyperexcitability.
depression of the sinoatrial (SA) node.
If extracellular potassium concentration increases without a significant change in
intracellular potassium, the resting membrane potential becomes more positive (i.e.,
changes from –90 to –80 mV) and the cell membrane is hypopolarized (the inside of the
cell becomes less negative or partially depolarized [increase excitability]). (Electrical
properties of cells are discussed in Chapter 1.)
Question 2
pts
Water movement between the intracellular fluid compartment and the extracellular compartment is
primarily a function of
plasma oncotic pressure.
antidiuretic hormone.
hydrostatic forces.
Correct!
osmotic forces.
The movement of water between ICF and ECF compartments is primarily a function of
osmotic forces. (Osmosis and other mechanisms of passive transport are discussed in
Chapter 1.)
Question 3
pts
NR 507: Advanced Pathophysiology
(Secure HIGHSCORE)
, Question 1
pts
In hyperkalemia, cardiac rhythm changes are a direct result of
Correct!
cardiac cell hypopolarization.
cardiac cell repolarization.
cardiac cell hyperexcitability.
depression of the sinoatrial (SA) node.
If extracellular potassium concentration increases without a significant change in
intracellular potassium, the resting membrane potential becomes more positive (i.e.,
changes from –90 to –80 mV) and the cell membrane is hypopolarized (the inside of the
cell becomes less negative or partially depolarized [increase excitability]). (Electrical
properties of cells are discussed in Chapter 1.)
Question 2
pts
Water movement between the intracellular fluid compartment and the extracellular compartment is
primarily a function of
plasma oncotic pressure.
antidiuretic hormone.
hydrostatic forces.
Correct!
osmotic forces.
The movement of water between ICF and ECF compartments is primarily a function of
osmotic forces. (Osmosis and other mechanisms of passive transport are discussed in
Chapter 1.)
Question 3
pts
