APHY 102 ANATOMY & PHYSIOLOGY 2 FINAL EXAM (WINTER 2026/2027) | QUESTIONS
AND CORRECT ANSWERS
APHY 102 Anatomy & Physiology II Comprehensive Final Examination | Core Domains: Endocrine
System, Cardiovascular System (Heart, Blood Vessels, Hemodynamics), Lymphatic & Immune Systems,
Respiratory System, Digestive System & Metabolism, Urinary System, Fluid, Electrolyte & Acid-Base
Balance, and Reproductive Systems | Undergraduate Biological Sciences Focus | Cumulative
Assessment Format
Course Code: APHY 102
Semester: Winter 2026/2027
Exam Structure
The APHY 102 Anatomy & Physiology 2 Final Exam for the Winter 2026/2027 semester is a
comprehensive, 100-question multiple-choice assessment covering all body systems studied in the second
semester of the sequence, with emphasis on system integration, homeostasis, and clinical applications.
Introduction
This APHY 102 Final Exam guide for the Winter 2026/2027 semester provides targeted preparation for
the cumulative assessment. It emphasizes the integration of structure and function across the endocrine,
cardiovascular, respiratory, digestive, urinary, and reproductive systems, requiring students to apply
anatomical knowledge to physiological processes and homeostatic mechanisms.
Answer Format
The correct multiple-choice option for each question is highlighted in bold and green. All correct
anatomical structures, physiological processes, and homeostatic mechanisms within the rationales are
also presented in bold and green, followed by detailed explanations of interrelationships, processes,
and clinical significance.
Comprehensive Examination Questions & Detailed Rationales
Section A: Endocrine System
1. In response to long-term stress, the hypothalamus releases CRH, which stimulates the
anterior pituitary to release ACTH. What is the primary hormone released by the adrenal
cortex in response to ACTH, and what are its major physiological effects?
, · A) Aldosterone; increases sodium reabsorption and blood pressure.
· B) Cortisol; promotes gluconeogenesis, has anti-inflammatory effects, and
suppresses the immune system.
· C) Epinephrine; increases heart rate and mobilizes glucose for immediate energy.
· D) Androgens; contribute to secondary sex characteristics.
Rationale:
The primary glucocorticoid released by the zona fasciculata of the adrenal cortex in response to
Adrenocorticotropic Hormone (ACTH) is cortisol. This hormone is central to the body's long-term
stress response. Its major effects are metabolic and anti-inflammatory. Metabolically, cortisol
promotes gluconeogenesis (the synthesis of glucose from non-carbohydrate sources like amino
acids and fatty acids) in the liver, increases the breakdown of skeletal muscle protein, and enhances
lipolysis (fat breakdown). These actions collectively increase the availability of energy substrates
(glucose, fatty acids, amino acids) in the blood, which is crucial for dealing with a sustained stressor.
Furthermore, cortisol has potent anti-inflammatory and immunosuppressive effects by
inhibiting the production of prostaglandins and leukotrienes and reducing the proliferation of
immune cells. While beneficial in the short term to prevent excessive inflammation, chronic high levels
of cortisol can impair immune function and lead to tissue breakdown.
2. A patient with a tumor in the pancreas has chronically low blood sugar levels. The tumor
is most likely overproducing which hormone?
· A) Insulin
· B) Glucagon
· C) Somatostatin
· D) Pancreatic Polypeptide
Rationale:
The hormone responsible for lowering blood glucose levels is insulin, which is produced by the beta
cells of the pancreatic islets. Insulin promotes the uptake of glucose from the blood into muscle, fat,
and liver cells, and stimulates the conversion of glucose into glycogen in the liver and muscles. An
insulin-secreting tumor (insulinoma) would cause hyperinsulinism, leading to excessive glucose
uptake from the blood and resulting in hypoglycemia (chronically low blood sugar).
3. Which hormone acts as the primary antagonist to insulin, and what is its main function?
· A) Cortisol; increases blood glucose through gluconeogenesis.
· B) Glucagon; increases blood glucose by stimulating glycogenolysis and
gluconeogenesis.
· C) Epinephrine; increases blood glucose by stimulating glycogenolysis.
· D) Somatostatin; inhibits the release of both insulin and glucagon.
Rationale:
The primary antagonist to insulin is glucagon, produced by the alpha cells of the pancreatic islets.
Its main function is to raise blood glucose levels when they fall too low. Glucagon primarily targets
the liver, where it stimulates glycogenolysis (the breakdown of glycogen into glucose) and
gluconeogenesis (the synthesis of glucose from other sources). This action ensures that the brain
and other tissues have a constant supply of glucose, especially between meals or during fasting.
4. A patient presents with symptoms of weight loss despite an increased appetite, heat
intolerance, and a rapid heart rate. An excess of which hormone is likely responsible?
· A) Parathyroid Hormone (PTH)
· B) Growth Hormone (GH)
· C) Thyroid Hormone (T3/T4)
, · D) Aldosterone
Rationale:
These symptoms are classic signs of hyperthyroidism, which is caused by an excess of thyroid
hormone (thyroxine T4 and triiodothyronine T3). Thyroid hormone is the body's major
metabolic hormone. An excess of it significantly increases the basal metabolic rate, leading to
increased heat production (heat intolerance), weight loss despite increased food intake
(hyperphagia), and increased sensitivity of the cardiovascular system to catecholamines, resulting in
tachycardia (rapid heart rate).
5. What is the primary hormone responsible for increasing blood calcium levels, and which
gland secretes it?
· A) Calcitonin; Thyroid gland
· B) Parathyroid Hormone (PTH); Parathyroid glands
· C) Aldosterone; Adrenal cortex
· D) Vitamin D; Kidneys (as calcitriol)
Rationale:
The primary hormone that raises blood calcium levels is parathyroid hormone (PTH), which is
secreted by the parathyroid glands. PTH acts on three target organs: it stimulates osteoclasts to
break down bone and release calcium, it enhances reabsorption of calcium by the kidneys, and it
promotes the activation of vitamin D, which in turn increases the absorption of calcium from the
small intestine. Its antagonist is calcitonin, which lowers blood calcium levels.
6. Antidiuretic hormone (ADH) and oxytocin are synthesized in the hypothalamus but are
stored and released from which endocrine gland?
· A) Anterior Pituitary
· B) Posterior Pituitary
· C) Pineal Gland
· D) Adrenal Medulla
Rationale:
ADH and oxytocin are produced by neurosecretory cells in the hypothalamus and are then
transported down their axons to be stored and released from the posterior pituitary gland. The
posterior pituitary is not a true endocrine gland in that it doesn't synthesize its own hormones; it
functions as a hormone-storage and release site for the hypothalamus. This neuroendocrine
connection is known as the hypothalamo-hypophyseal tract.
7. Which hormone, produced by the pineal gland, is primarily responsible for regulating
the sleep-wake cycle?
· A) Serotonin
· B) Dopamine
· C) Melatonin
· D) Orexin
Rationale:
The hormone that regulates the circadian rhythm, or sleep-wake cycle, is melatonin. It is secreted
by the pineal gland in a diurnal cycle, with peak levels occurring at night in darkness and lowest
levels during daylight. This hormonal signal helps to synchronize the body's physiological processes
with the 24-hour day-night cycle.
AND CORRECT ANSWERS
APHY 102 Anatomy & Physiology II Comprehensive Final Examination | Core Domains: Endocrine
System, Cardiovascular System (Heart, Blood Vessels, Hemodynamics), Lymphatic & Immune Systems,
Respiratory System, Digestive System & Metabolism, Urinary System, Fluid, Electrolyte & Acid-Base
Balance, and Reproductive Systems | Undergraduate Biological Sciences Focus | Cumulative
Assessment Format
Course Code: APHY 102
Semester: Winter 2026/2027
Exam Structure
The APHY 102 Anatomy & Physiology 2 Final Exam for the Winter 2026/2027 semester is a
comprehensive, 100-question multiple-choice assessment covering all body systems studied in the second
semester of the sequence, with emphasis on system integration, homeostasis, and clinical applications.
Introduction
This APHY 102 Final Exam guide for the Winter 2026/2027 semester provides targeted preparation for
the cumulative assessment. It emphasizes the integration of structure and function across the endocrine,
cardiovascular, respiratory, digestive, urinary, and reproductive systems, requiring students to apply
anatomical knowledge to physiological processes and homeostatic mechanisms.
Answer Format
The correct multiple-choice option for each question is highlighted in bold and green. All correct
anatomical structures, physiological processes, and homeostatic mechanisms within the rationales are
also presented in bold and green, followed by detailed explanations of interrelationships, processes,
and clinical significance.
Comprehensive Examination Questions & Detailed Rationales
Section A: Endocrine System
1. In response to long-term stress, the hypothalamus releases CRH, which stimulates the
anterior pituitary to release ACTH. What is the primary hormone released by the adrenal
cortex in response to ACTH, and what are its major physiological effects?
, · A) Aldosterone; increases sodium reabsorption and blood pressure.
· B) Cortisol; promotes gluconeogenesis, has anti-inflammatory effects, and
suppresses the immune system.
· C) Epinephrine; increases heart rate and mobilizes glucose for immediate energy.
· D) Androgens; contribute to secondary sex characteristics.
Rationale:
The primary glucocorticoid released by the zona fasciculata of the adrenal cortex in response to
Adrenocorticotropic Hormone (ACTH) is cortisol. This hormone is central to the body's long-term
stress response. Its major effects are metabolic and anti-inflammatory. Metabolically, cortisol
promotes gluconeogenesis (the synthesis of glucose from non-carbohydrate sources like amino
acids and fatty acids) in the liver, increases the breakdown of skeletal muscle protein, and enhances
lipolysis (fat breakdown). These actions collectively increase the availability of energy substrates
(glucose, fatty acids, amino acids) in the blood, which is crucial for dealing with a sustained stressor.
Furthermore, cortisol has potent anti-inflammatory and immunosuppressive effects by
inhibiting the production of prostaglandins and leukotrienes and reducing the proliferation of
immune cells. While beneficial in the short term to prevent excessive inflammation, chronic high levels
of cortisol can impair immune function and lead to tissue breakdown.
2. A patient with a tumor in the pancreas has chronically low blood sugar levels. The tumor
is most likely overproducing which hormone?
· A) Insulin
· B) Glucagon
· C) Somatostatin
· D) Pancreatic Polypeptide
Rationale:
The hormone responsible for lowering blood glucose levels is insulin, which is produced by the beta
cells of the pancreatic islets. Insulin promotes the uptake of glucose from the blood into muscle, fat,
and liver cells, and stimulates the conversion of glucose into glycogen in the liver and muscles. An
insulin-secreting tumor (insulinoma) would cause hyperinsulinism, leading to excessive glucose
uptake from the blood and resulting in hypoglycemia (chronically low blood sugar).
3. Which hormone acts as the primary antagonist to insulin, and what is its main function?
· A) Cortisol; increases blood glucose through gluconeogenesis.
· B) Glucagon; increases blood glucose by stimulating glycogenolysis and
gluconeogenesis.
· C) Epinephrine; increases blood glucose by stimulating glycogenolysis.
· D) Somatostatin; inhibits the release of both insulin and glucagon.
Rationale:
The primary antagonist to insulin is glucagon, produced by the alpha cells of the pancreatic islets.
Its main function is to raise blood glucose levels when they fall too low. Glucagon primarily targets
the liver, where it stimulates glycogenolysis (the breakdown of glycogen into glucose) and
gluconeogenesis (the synthesis of glucose from other sources). This action ensures that the brain
and other tissues have a constant supply of glucose, especially between meals or during fasting.
4. A patient presents with symptoms of weight loss despite an increased appetite, heat
intolerance, and a rapid heart rate. An excess of which hormone is likely responsible?
· A) Parathyroid Hormone (PTH)
· B) Growth Hormone (GH)
· C) Thyroid Hormone (T3/T4)
, · D) Aldosterone
Rationale:
These symptoms are classic signs of hyperthyroidism, which is caused by an excess of thyroid
hormone (thyroxine T4 and triiodothyronine T3). Thyroid hormone is the body's major
metabolic hormone. An excess of it significantly increases the basal metabolic rate, leading to
increased heat production (heat intolerance), weight loss despite increased food intake
(hyperphagia), and increased sensitivity of the cardiovascular system to catecholamines, resulting in
tachycardia (rapid heart rate).
5. What is the primary hormone responsible for increasing blood calcium levels, and which
gland secretes it?
· A) Calcitonin; Thyroid gland
· B) Parathyroid Hormone (PTH); Parathyroid glands
· C) Aldosterone; Adrenal cortex
· D) Vitamin D; Kidneys (as calcitriol)
Rationale:
The primary hormone that raises blood calcium levels is parathyroid hormone (PTH), which is
secreted by the parathyroid glands. PTH acts on three target organs: it stimulates osteoclasts to
break down bone and release calcium, it enhances reabsorption of calcium by the kidneys, and it
promotes the activation of vitamin D, which in turn increases the absorption of calcium from the
small intestine. Its antagonist is calcitonin, which lowers blood calcium levels.
6. Antidiuretic hormone (ADH) and oxytocin are synthesized in the hypothalamus but are
stored and released from which endocrine gland?
· A) Anterior Pituitary
· B) Posterior Pituitary
· C) Pineal Gland
· D) Adrenal Medulla
Rationale:
ADH and oxytocin are produced by neurosecretory cells in the hypothalamus and are then
transported down their axons to be stored and released from the posterior pituitary gland. The
posterior pituitary is not a true endocrine gland in that it doesn't synthesize its own hormones; it
functions as a hormone-storage and release site for the hypothalamus. This neuroendocrine
connection is known as the hypothalamo-hypophyseal tract.
7. Which hormone, produced by the pineal gland, is primarily responsible for regulating
the sleep-wake cycle?
· A) Serotonin
· B) Dopamine
· C) Melatonin
· D) Orexin
Rationale:
The hormone that regulates the circadian rhythm, or sleep-wake cycle, is melatonin. It is secreted
by the pineal gland in a diurnal cycle, with peak levels occurring at night in darkness and lowest
levels during daylight. This hormonal signal helps to synchronize the body's physiological processes
with the 24-hour day-night cycle.
