Test Bank - Nursing Leadership and Management for Patient
Safety and Quality Care, 3rd Edition (Murray, 2026), Chapter 1-
17 | All Chapters
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PART I: CELLULAR PHYSIOLOGY
Chapter 1: Medical Physiology: An Overview
Multiple Choice Questions (30)
1. Which of the following best defines homeostasis?
A) The ability of an organism to maintain a constant internal environment despite
external changes
B) The process by which cells generate energy from nutrients
C) The transport of molecules across cell membranes
D) The regulation of blood pressure by the heart
E) The body's response to infection
Answer: A
Explanation: Homeostasis is the maintenance of a relatively stable internal environment
through coordinated physiological responses. This dynamic equilibrium is essential for
optimal cellular function. While the other options describe specific physiological
processes, they do not capture the comprehensive definition of homeostasis as the
body's ability to regulate its internal environment.
2. Negative feedback mechanisms are characterized by:
A) Amplification of the initial stimulus
B) Reversal of the initial stimulus
C) Complete independence from receptors
D) Positive reinforcement of the response
E) Absence of a set point
, Answer: B
Explanation: Negative feedback loops detect deviations from a set point and initiate
responses that counteract or reverse the change, returning the variable toward its
normal range. This is the most common control mechanism in physiology, exemplified
by temperature regulation and blood glucose control.
3. Which type of feedback mechanism is involved in blood clotting?
A) Negative feedback
B) Positive feedback
C) Feed-forward control
D) Homeostatic imbalance
E) Autoregulation
Answer: B
Explanation: Blood clotting involves positive feedback because the initial clotting
cascade activates more clotting factors, amplifying the response until the clot is formed.
This is one of the few examples of positive feedback in the body, along with oxytocin
release during childbirth and action potential generation.
4. The extracellular fluid compartment includes:
A) Intracellular fluid
B) Plasma and interstitial fluid
C) Cerebrospinal fluid only
D) Synovial fluid only
E) Intracellular and interstitial fluid
Answer: B
Explanation: The extracellular fluid compartment consists of all fluid outside cells,
including plasma (the liquid portion of blood) and interstitial fluid (the fluid bathing
tissues). Other body fluids such as lymph, cerebrospinal fluid, and synovial fluid are also
considered part of the ECF but are smaller in volume.
https://www.stuvia.com/user/geniusexpert
Safety and Quality Care, 3rd Edition (Murray, 2026), Chapter 1-
17 | All Chapters
,
,https://www.stuvia.com/user/geniusexpert
PART I: CELLULAR PHYSIOLOGY
Chapter 1: Medical Physiology: An Overview
Multiple Choice Questions (30)
1. Which of the following best defines homeostasis?
A) The ability of an organism to maintain a constant internal environment despite
external changes
B) The process by which cells generate energy from nutrients
C) The transport of molecules across cell membranes
D) The regulation of blood pressure by the heart
E) The body's response to infection
Answer: A
Explanation: Homeostasis is the maintenance of a relatively stable internal environment
through coordinated physiological responses. This dynamic equilibrium is essential for
optimal cellular function. While the other options describe specific physiological
processes, they do not capture the comprehensive definition of homeostasis as the
body's ability to regulate its internal environment.
2. Negative feedback mechanisms are characterized by:
A) Amplification of the initial stimulus
B) Reversal of the initial stimulus
C) Complete independence from receptors
D) Positive reinforcement of the response
E) Absence of a set point
, Answer: B
Explanation: Negative feedback loops detect deviations from a set point and initiate
responses that counteract or reverse the change, returning the variable toward its
normal range. This is the most common control mechanism in physiology, exemplified
by temperature regulation and blood glucose control.
3. Which type of feedback mechanism is involved in blood clotting?
A) Negative feedback
B) Positive feedback
C) Feed-forward control
D) Homeostatic imbalance
E) Autoregulation
Answer: B
Explanation: Blood clotting involves positive feedback because the initial clotting
cascade activates more clotting factors, amplifying the response until the clot is formed.
This is one of the few examples of positive feedback in the body, along with oxytocin
release during childbirth and action potential generation.
4. The extracellular fluid compartment includes:
A) Intracellular fluid
B) Plasma and interstitial fluid
C) Cerebrospinal fluid only
D) Synovial fluid only
E) Intracellular and interstitial fluid
Answer: B
Explanation: The extracellular fluid compartment consists of all fluid outside cells,
including plasma (the liquid portion of blood) and interstitial fluid (the fluid bathing
tissues). Other body fluids such as lymph, cerebrospinal fluid, and synovial fluid are also
considered part of the ECF but are smaller in volume.
https://www.stuvia.com/user/geniusexpert
