NURS 6620 exam 1 COMPLETE
QUESTIONS AND VERIFIED
ANSWERS|ACTUAL EXAM|
ACCURATE SOLUTIONS WITH
RATIONALES/ALREADY GRADED
A+
During cell injury caused by hypoxia, why does an increase in the osmotic
pressure within the cell occur? - 🧠 ANSWER ✔✔b.Sodium chloride enters
the cell.
,In hypoxic injury, movement of fluid and ions into the cell is associated with
acute failure of metabolism and a loss of ATP production. Normally, the
pump that transports sodium ions out of the cell is maintained by the
presence of ATP and ATPase, the active transport enzyme. In metabolic
failure caused by hypoxia, reduced ATP and ATPase levels permit sodium
to accumulate in the cell, whereas potassium diffuses outward. The
increase of intracellular sodium increases osmotic pressure, which draws
more water into the cell. (Transport mechanisms are described in Chapter
1.) The remaining options do not accurately describe the cell injury that
results in increased osmotic pressure caused by hypoxia.
A healthcare professional is caring for four patients. Which patient should
the professional assess for hyperkalemia or hypermagnesmia? - 🧠
ANSWER ✔✔c.Renal failure
Hyperkalemia should be investigated when a history of renal disease,
massive trauma, insulin deficiency, Addison disease, use of potassium salt
substitutes, or metabolic acidosis exists. Hyperparathyroidism might lead to
hyperphosphatemia. Vomiting is frequently associated with potassium
depletion. Hyperaldosteronism also can lead to potassium wasting.
, Renal failure usually causes hypermagnesemia, in which magnesium
concentration is greater than 2.5 mEq/L. Hypermagnesemia is not a result
of the other options.
A major determinant of the resting membrane potential necessary for the
transmission of nerve impulses is the ratio between what? - 🧠 ANSWER
✔✔Intracellular and extracellular K+
The ratio of K+ in theICF to K+ in the ECF is the major determinant of the
resting membrane potential, which is necessary for the transmission and
conduction of nerve impulses, for the maintenance of normal cardiac
rhythms, and for the skeletal and smooth muscle contraction. This is not
true of the other options.
How do free radicals cause cell damage? - 🧠 ANSWER ✔✔a.Giving up an
electron, which causes injury to the chemical bonds of the cell membrane
A free radical is an electrically uncharged atom or group of atoms having
an unpaired electron. Having one unpaired electron makes the molecule
unstable; thus to stabilize, the molecule gives up an electron to another
molecule or steals one. Therefore it is capable of forming injurious chemical
bonds with proteins, lipids, or carbohydrates-key molecules in membranes
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
QUESTIONS AND VERIFIED
ANSWERS|ACTUAL EXAM|
ACCURATE SOLUTIONS WITH
RATIONALES/ALREADY GRADED
A+
During cell injury caused by hypoxia, why does an increase in the osmotic
pressure within the cell occur? - 🧠 ANSWER ✔✔b.Sodium chloride enters
the cell.
,In hypoxic injury, movement of fluid and ions into the cell is associated with
acute failure of metabolism and a loss of ATP production. Normally, the
pump that transports sodium ions out of the cell is maintained by the
presence of ATP and ATPase, the active transport enzyme. In metabolic
failure caused by hypoxia, reduced ATP and ATPase levels permit sodium
to accumulate in the cell, whereas potassium diffuses outward. The
increase of intracellular sodium increases osmotic pressure, which draws
more water into the cell. (Transport mechanisms are described in Chapter
1.) The remaining options do not accurately describe the cell injury that
results in increased osmotic pressure caused by hypoxia.
A healthcare professional is caring for four patients. Which patient should
the professional assess for hyperkalemia or hypermagnesmia? - 🧠
ANSWER ✔✔c.Renal failure
Hyperkalemia should be investigated when a history of renal disease,
massive trauma, insulin deficiency, Addison disease, use of potassium salt
substitutes, or metabolic acidosis exists. Hyperparathyroidism might lead to
hyperphosphatemia. Vomiting is frequently associated with potassium
depletion. Hyperaldosteronism also can lead to potassium wasting.
, Renal failure usually causes hypermagnesemia, in which magnesium
concentration is greater than 2.5 mEq/L. Hypermagnesemia is not a result
of the other options.
A major determinant of the resting membrane potential necessary for the
transmission of nerve impulses is the ratio between what? - 🧠 ANSWER
✔✔Intracellular and extracellular K+
The ratio of K+ in theICF to K+ in the ECF is the major determinant of the
resting membrane potential, which is necessary for the transmission and
conduction of nerve impulses, for the maintenance of normal cardiac
rhythms, and for the skeletal and smooth muscle contraction. This is not
true of the other options.
How do free radicals cause cell damage? - 🧠 ANSWER ✔✔a.Giving up an
electron, which causes injury to the chemical bonds of the cell membrane
A free radical is an electrically uncharged atom or group of atoms having
an unpaired electron. Having one unpaired electron makes the molecule
unstable; thus to stabilize, the molecule gives up an electron to another
molecule or steals one. Therefore it is capable of forming injurious chemical
bonds with proteins, lipids, or carbohydrates-key molecules in membranes
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
