Pathophysiology exam 2
(Fully Updated 2026) Exam Questions + Verified &
260+
Rationalized Answers | A+ Graded
VERIFIED ANSWERS
Question 1
A nurse is reviewing lab reports. The nurse recalls blood plasma is located in which of the following fluid compartments?
Correct Answer
Intravascular fluid
Rationale:
Blood plasma is essentially the liquid portion of blood, and since it is contained within blood vessels, it is an intravascular fluid. The
intravascular compartment is the space within blood vessels where blood, including plasma, circulates throughout the body.
Question 2
A 35-year-old male weighs 70 kg. Approximately how much of this weight is ICF?
Correct Answer
42 L- the total volume of body water for a 70 kg person is about 42 L (60%)
Rationale:
The total volume of body water for a 70 kg person is approximately 42 L because it is based on the average percentage of body weight that is
water, which is around 60%. This percentage is then applied to the person's weight to calculate the total volume of water in their body, which
in this case includes both intracellular and extracellular fluid (ICF and ECF).
Question 3
While planning care for elderly individuals, the nurse remembers the elderly are at a higher risk for developing dehydration
because they have a(n):
Correct Answer
decreased muscle mass
Rationale:
When elderly individuals experience decreased muscle mass, their body composition changes, resulting in a lower percentage of water-
containing muscle mass, making it more challenging for their body to hold onto water and fluids. This shift in body composition contributes to
increased susceptibility to dehydration due to reduced muscle mass that helps regulate fluid balance in the body.
Trusted by thousands of students and professionals worldwide Page 1 of 73
,Question 4
Which of the following patients should the nurse assess for a decreased oncotic pressure in the capillaries? A patient with:
Correct Answer
liver failure
Rationale:
A patient with liver failure should be assessed for a decreased oncotic pressure in the capillaries because the liver is responsible for producing
albumin, a protein that helps maintain capillary oncotic pressure. In liver failure, the liver's inability to produce albumin leads to decreased
oncotic pressure, causing fluid to leak out of capillaries and into tissues, resulting in edema.
Question 5
Water movement between the ICF and ECF compartments is determined by:
Correct Answer
osmotic forces
Rationale:
The movement of water between the intra-cellular fluid (ICF) and extra-cellular fluid (ECF) compartments is determined by osmotic forces
because the concentration of solutes in each compartment creates a balance of water movement, where water flows from an area of higher
solute concentration to an area of lower solute concentration. This concentration gradient drives the movement of water molecules across the
cell membrane, resulting in the balance and distribution of water between the ICF and ECF compartments.
Question 6
An experiment was designed to test the effects of the Starling forces on fluid movement. Which of the following alterations
would result in fluid moving into the interstitial space?
Correct Answer
Increased interstitial oncotic pressure
Rationale:
Increased interstitial oncotic pressure would result in fluid moving into the interstitial space because oncotic pressure is a force that helps
retain fluid in capillaries, and when it is higher in the interstitial space than in the capillaries, it pulls fluid out of the capillaries and into the
interstitial space. This imbalance between oncotic pressure in the capillaries and the interstitial space would cause fluid to move out of the
capillaries and into the interstitial space, resulting in fluid accumulation.
Question 7
When planning care for a dehydrated patient, the nurse remembers the principle of water balance is closely related to
_____ balance.
Correct Answer
Sodium
Rationale:
The principle of water balance is closely related to electrolyte balance, particularly sodium balance, because sodium plays a crucial role in
maintaining fluid balance within the body. Sodium helps regulate the amount of water in cells and tissues by controlling the balance of fluids
between the intracellular and extracellular spaces.
Trusted by thousands of students and professionals worldwide Page 2 of 73
,Question 8
A 70-year-old male with chronic renal failure presents with edema. Which of the following is the most likely cause of this
condition?
Correct Answer
Increased capillary hydrostatic pressure
Rationale:
The accumulation of waste products in the blood, such as urea, leads to increased blood viscosity and decreased oncotic pressure, causing
fluid to shift out of the capillaries and into the interstitial space, resulting in edema. This is a common complication of chronic renal failure,
where the kidneys are unable to effectively filter waste products from the blood, ultimately leading to increased capillary hydrostatic pressure.
Question 9
A 10-year-old male is brought to the emergency room (ER) because he is incoherent and semiconscious. CT scan reveals
that he is suffering from cerebral edema. This type of edema is referred to as:
Correct Answer
localized edema
Rationale:
Localized edema is the correct term because it specifically refers to edema confined to a particular region or organ, such as the brain, in this
case. In cerebral edema, the swelling occurs within the brain tissue, distinguishing it from more general or diffuse forms of edema that affect
the entire body or a larger area.
Question 10
A nurse is teaching the staff about antidiuretic hormone (ADH). Which information should the nurse include? Secretion of
ADH is stimulated by:
Correct Answer
increased plasma osmolality
Rationale:
The nurse should include that the secretion of ADH is stimulated by increased plasma osmolality, as this triggers a response to counteract the
high concentration of solutes in the blood by promoting water reabsorption in the kidneys to dilute the plasma. This increase in plasma
osmolality sends a signal to the hypothalamus, which then stimulates the posterior pituitary to release ADH, allowing for the regulation of fluid
balance in the body.
Question 11
Which statement by the staff indicates teaching was successful concerning aldosterone? Secretion of aldosterone results in:
Correct Answer
increased blood volume
Rationale:
Aldosterone is a hormone that promotes water retention and sodium reabsorption in the kidneys, which increases blood volume by drawing in
more fluids. As a result, increased blood volume is a direct consequence of aldosterone secretion, making it a correct indicator of successful
teaching on this topic.
Trusted by thousands of students and professionals worldwide Page 3 of 73
, Question 12
A 25-year-old male is diagnosed with a hormone-secreting tumor of the adrenal cortex. Which finding would the nurse
expect to see in the lab results?
Correct Answer
Decreased blood K+ levels
Rationale:
The hormone-secreting tumor of the adrenal cortex likely produces aldosterone, a hormone that regulates electrolyte balance, particularly
potassium levels. Decreased blood K+ levels would be expected due to aldosterone's effect of promoting potassium excretion in the urine,
leading to a decrease in potassium levels in the bloodstream.
Question 13
A patient has been searching on the Internet about natriuretic hormones. When the patient asks the nurse what do these
hormones do, how should the nurse respond? Natriuretic hormones affect the balance of:
Correct Answer
Sodium
Rationale:
The nurse should respond by explaining that natriuretic hormones affect the balance of sodium in the body, as their primary function is to
regulate the excretion of sodium by the kidneys. This regulation is crucial in maintaining fluid balance, blood pressure, and overall electrolyte
balance within the body.
Question 14
A 5-year-old male presents to the ER with delirium and sunken eyes. After diagnosing him with severe dehydration, the
primary care provider orders fluid replacement. The nurse administers a hypertonic intravenous solution. Which of the
following would be expected?
Correct Answer
Intracellular dehydration
Rationale:
Administering a hypertonic intravenous solution would cause water to move out of the cells and into the bloodstream, a process known as
intracellular dehydration, due to the higher concentration of solutes in the solution compared to the cells. This results from osmosis, where
water molecules flow from a region of lower solute concentration (the cell) to a region of higher solute concentration (the solution), leading to
dehydration of the cells.
Question 15
Which of the following patients is the most at risk for developing hypernatremia? A patient with:
Correct Answer
dehydration
Rationale:
Hypernatremia occurs when the body loses excessive amounts of water relative to sodium, causing serum sodium levels to rise. A patient with
dehydration is at risk for developing hypernatremia because dehydration leads to water loss, increasing the concentration of sodium in the
blood, which can result in elevated serum sodium levels.
Trusted by thousands of students and professionals worldwide Page 4 of 73
(Fully Updated 2026) Exam Questions + Verified &
260+
Rationalized Answers | A+ Graded
VERIFIED ANSWERS
Question 1
A nurse is reviewing lab reports. The nurse recalls blood plasma is located in which of the following fluid compartments?
Correct Answer
Intravascular fluid
Rationale:
Blood plasma is essentially the liquid portion of blood, and since it is contained within blood vessels, it is an intravascular fluid. The
intravascular compartment is the space within blood vessels where blood, including plasma, circulates throughout the body.
Question 2
A 35-year-old male weighs 70 kg. Approximately how much of this weight is ICF?
Correct Answer
42 L- the total volume of body water for a 70 kg person is about 42 L (60%)
Rationale:
The total volume of body water for a 70 kg person is approximately 42 L because it is based on the average percentage of body weight that is
water, which is around 60%. This percentage is then applied to the person's weight to calculate the total volume of water in their body, which
in this case includes both intracellular and extracellular fluid (ICF and ECF).
Question 3
While planning care for elderly individuals, the nurse remembers the elderly are at a higher risk for developing dehydration
because they have a(n):
Correct Answer
decreased muscle mass
Rationale:
When elderly individuals experience decreased muscle mass, their body composition changes, resulting in a lower percentage of water-
containing muscle mass, making it more challenging for their body to hold onto water and fluids. This shift in body composition contributes to
increased susceptibility to dehydration due to reduced muscle mass that helps regulate fluid balance in the body.
Trusted by thousands of students and professionals worldwide Page 1 of 73
,Question 4
Which of the following patients should the nurse assess for a decreased oncotic pressure in the capillaries? A patient with:
Correct Answer
liver failure
Rationale:
A patient with liver failure should be assessed for a decreased oncotic pressure in the capillaries because the liver is responsible for producing
albumin, a protein that helps maintain capillary oncotic pressure. In liver failure, the liver's inability to produce albumin leads to decreased
oncotic pressure, causing fluid to leak out of capillaries and into tissues, resulting in edema.
Question 5
Water movement between the ICF and ECF compartments is determined by:
Correct Answer
osmotic forces
Rationale:
The movement of water between the intra-cellular fluid (ICF) and extra-cellular fluid (ECF) compartments is determined by osmotic forces
because the concentration of solutes in each compartment creates a balance of water movement, where water flows from an area of higher
solute concentration to an area of lower solute concentration. This concentration gradient drives the movement of water molecules across the
cell membrane, resulting in the balance and distribution of water between the ICF and ECF compartments.
Question 6
An experiment was designed to test the effects of the Starling forces on fluid movement. Which of the following alterations
would result in fluid moving into the interstitial space?
Correct Answer
Increased interstitial oncotic pressure
Rationale:
Increased interstitial oncotic pressure would result in fluid moving into the interstitial space because oncotic pressure is a force that helps
retain fluid in capillaries, and when it is higher in the interstitial space than in the capillaries, it pulls fluid out of the capillaries and into the
interstitial space. This imbalance between oncotic pressure in the capillaries and the interstitial space would cause fluid to move out of the
capillaries and into the interstitial space, resulting in fluid accumulation.
Question 7
When planning care for a dehydrated patient, the nurse remembers the principle of water balance is closely related to
_____ balance.
Correct Answer
Sodium
Rationale:
The principle of water balance is closely related to electrolyte balance, particularly sodium balance, because sodium plays a crucial role in
maintaining fluid balance within the body. Sodium helps regulate the amount of water in cells and tissues by controlling the balance of fluids
between the intracellular and extracellular spaces.
Trusted by thousands of students and professionals worldwide Page 2 of 73
,Question 8
A 70-year-old male with chronic renal failure presents with edema. Which of the following is the most likely cause of this
condition?
Correct Answer
Increased capillary hydrostatic pressure
Rationale:
The accumulation of waste products in the blood, such as urea, leads to increased blood viscosity and decreased oncotic pressure, causing
fluid to shift out of the capillaries and into the interstitial space, resulting in edema. This is a common complication of chronic renal failure,
where the kidneys are unable to effectively filter waste products from the blood, ultimately leading to increased capillary hydrostatic pressure.
Question 9
A 10-year-old male is brought to the emergency room (ER) because he is incoherent and semiconscious. CT scan reveals
that he is suffering from cerebral edema. This type of edema is referred to as:
Correct Answer
localized edema
Rationale:
Localized edema is the correct term because it specifically refers to edema confined to a particular region or organ, such as the brain, in this
case. In cerebral edema, the swelling occurs within the brain tissue, distinguishing it from more general or diffuse forms of edema that affect
the entire body or a larger area.
Question 10
A nurse is teaching the staff about antidiuretic hormone (ADH). Which information should the nurse include? Secretion of
ADH is stimulated by:
Correct Answer
increased plasma osmolality
Rationale:
The nurse should include that the secretion of ADH is stimulated by increased plasma osmolality, as this triggers a response to counteract the
high concentration of solutes in the blood by promoting water reabsorption in the kidneys to dilute the plasma. This increase in plasma
osmolality sends a signal to the hypothalamus, which then stimulates the posterior pituitary to release ADH, allowing for the regulation of fluid
balance in the body.
Question 11
Which statement by the staff indicates teaching was successful concerning aldosterone? Secretion of aldosterone results in:
Correct Answer
increased blood volume
Rationale:
Aldosterone is a hormone that promotes water retention and sodium reabsorption in the kidneys, which increases blood volume by drawing in
more fluids. As a result, increased blood volume is a direct consequence of aldosterone secretion, making it a correct indicator of successful
teaching on this topic.
Trusted by thousands of students and professionals worldwide Page 3 of 73
, Question 12
A 25-year-old male is diagnosed with a hormone-secreting tumor of the adrenal cortex. Which finding would the nurse
expect to see in the lab results?
Correct Answer
Decreased blood K+ levels
Rationale:
The hormone-secreting tumor of the adrenal cortex likely produces aldosterone, a hormone that regulates electrolyte balance, particularly
potassium levels. Decreased blood K+ levels would be expected due to aldosterone's effect of promoting potassium excretion in the urine,
leading to a decrease in potassium levels in the bloodstream.
Question 13
A patient has been searching on the Internet about natriuretic hormones. When the patient asks the nurse what do these
hormones do, how should the nurse respond? Natriuretic hormones affect the balance of:
Correct Answer
Sodium
Rationale:
The nurse should respond by explaining that natriuretic hormones affect the balance of sodium in the body, as their primary function is to
regulate the excretion of sodium by the kidneys. This regulation is crucial in maintaining fluid balance, blood pressure, and overall electrolyte
balance within the body.
Question 14
A 5-year-old male presents to the ER with delirium and sunken eyes. After diagnosing him with severe dehydration, the
primary care provider orders fluid replacement. The nurse administers a hypertonic intravenous solution. Which of the
following would be expected?
Correct Answer
Intracellular dehydration
Rationale:
Administering a hypertonic intravenous solution would cause water to move out of the cells and into the bloodstream, a process known as
intracellular dehydration, due to the higher concentration of solutes in the solution compared to the cells. This results from osmosis, where
water molecules flow from a region of lower solute concentration (the cell) to a region of higher solute concentration (the solution), leading to
dehydration of the cells.
Question 15
Which of the following patients is the most at risk for developing hypernatremia? A patient with:
Correct Answer
dehydration
Rationale:
Hypernatremia occurs when the body loses excessive amounts of water relative to sodium, causing serum sodium levels to rise. A patient with
dehydration is at risk for developing hypernatremia because dehydration leads to water loss, increasing the concentration of sodium in the
blood, which can result in elevated serum sodium levels.
Trusted by thousands of students and professionals worldwide Page 4 of 73
