Study Guide & Practice Q&A (2026)
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Struggling to prepare for your NUR 2063 Essentials of Pathophysiology Exam 1? Our targeted
study guide is precisely what you need to conquer Chapters 1, 2, 3, 12, 13, and 14. We’ve
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and detailed explanations on homeostasis, fluid & electrolytes, immunity, inflammation, and
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, NUR 2063 Pathophysiology Exam 1 Review: Chapters 1, 2, 3, 12, 13,
14
1. A patient describes feeling nauseated and dizzy. How are these sensations best categorized?
a. Signs
b. Symptoms
c. Syndromes
d. Diagnoses
Answer: b. Symptoms
Explanation: Symptoms are the subjective feelings and experiences reported by the patient that
cannot be directly observed by a clinician. Nausea and dizziness are classic examples of
symptoms.
2. The process by which the body maintains a stable internal environment despite external changes
is known as:
a. Hemostasis
b. Homeostasis
c. Metastasis
d. Autopoiesis
Answer: b. Homeostasis
Explanation: Homeostasis is the self-regulating process by which biological systems maintain
stability while adjusting to changing external conditions. Examples include the regulation of
body temperature, blood pH, and fluid balance.
3. Which cellular organelle is primarily responsible for generating adenosine triphosphate (ATP)?
a. Nucleus
b. Endoplasmic Reticulum
c. Mitochondria
d. Golgi Apparatus
Answer: c. Mitochondria
, Explanation: Often termed the "powerhouse of the cell," the mitochondria are responsible for
cellular respiration and the production of ATP, which is the primary energy currency of the cell.
4. A key long-term regulator of blood pressure, involving the hormones renin, angiotensin, and
aldosterone, is known as what system?
a. Antidiuretic Hormone (ADH) System
b. Renin-Angiotensin-Aldosterone System (RAAS)
c. Natriuretic Peptide System
d. Sympathetic Nervous System
Answer: b. Renin-Angiotensin-Aldosterone System (RAAS)
Explanation: The RAAS is a critical hormone system that regulates blood pressure and fluid
balance. It is activated by low blood volume or low sodium, leading to vasoconstriction and
sodium/water retention by the kidneys to increase blood pressure.
5. Which of the following is a correct sequence in a homeostatic feedback loop?
a. Stimulus → Control Center → Receptor → Response
b. Receptor → Stimulus → Control Center → Response
c. Stimulus → Receptor → Control Center → Response
d. Control Center → Stimulus → Receptor → Response
Answer: c. Stimulus → Receptor → Control Center → Response
Explanation: In a standard negative feedback loop, a stimulus disrupts homeostasis, which is
detected by a receptor. The receptor sends this information to a control center, which processes
the information and directs a response to counteract the initial stimulus.
6. A patient presents with swelling in their lower extremities. This edema is most directly caused by
an increase in:
a. Intracellular oncotic pressure
b. Capillary hydrostatic pressure
c. Interstitial osmotic pressure
d. Lymphatic flow rate
Answer: b. Capillary hydrostatic pressure