BIOS 252 / BIOS252 WEEKS 5,6,7 EXAM ACTUAL EXAM 2026/2027 | ANATOMY & PHYSIOLOGY II WITH LAB | CHAMBERLAIN
–QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
*Core Domains:*
*- Cardiovascular System Anatomy and Physiology*
*- Lymphatic System and Immunity*
*- Respiratory System Mechanics and Gas Exchange*
*- Digestive System Processes and Nutrition*
*- Urinary System Function and Fluid Balance*
*- Endocrine Regulation of Homeostasis*
*- Electrolyte and Acid-Base Balance*
*- Clinical Correlations and Lab Applications*
The BIOS 252 Weeks 5, 6, and 7 Comprehensive Assessment is designed to evaluate advanced mastery of human anatomy and physiology II
principles. This examination assesses essential clinical knowledge, anatomical identification, and physiological processes critical for nursing and
healthcare professions. Comprising multiple-choice and scenario-based questions, the assessment emphasizes real-world clinical application,
diagnostic reasoning, and ethical decision-making. Students must synthesize foundational theory with laboratory observations to solve complex
pathophysiological problems. The structure challenges critical thinking regarding homeostatic imbalances, regulatory feedback mechanisms, and
therapeutic interventions, ensuring readiness for professional clinical practice.
SECTION ONE: QUESTIONS 1–100
Question 1
A 45-year-old patient presents with severe swelling in the right lower extremity following a surgical lymph node dissection. Which of the following
mechanisms best explains the development of this lymphedema?
A. Increased capillary hydrostatic pressure
B. Decreased plasma colloid osmotic pressure
C. Obstruction of lymphatic drainage
D. Increased capillary permeability
,🟢 C. Obstruction of lymphatic drainage
🔴 RATIONALE: Surgical removal or dissection of lymph nodes disrupts the normal pathway of lymphatic return, leading to the accumulation of
interstitial fluid in the affected limb, a condition known as lymphedema.
Question 2
During a laboratory simulation, a student observes a blood smear showing an abnormally high count of polymorphonuclear leukocytes with multi-
lobed nuclei. This finding most likely indicates which of the following conditions?
A. Chronic parasitic infection
B. Acute bacterial infection
C. Severe allergic reaction
D. Viral mononucleosis
🟢 B. Acute bacterial infection
🔴 RATIONALE: Neutrophils, also known as polymorphonuclear leukocytes, are the primary responders to acute bacterial infections and undergo
rapid proliferation to phagocytize pathogens.
Question 3
Which of the following cellular structures in the respiratory membrane is directly responsible for producing pulmonary surfactant to prevent alveolar
collapse?
A. Type I alveolar cells
B. Alveolar macrophages
C. Type II alveolar cells
D. Goblet cells
🟢 C. Type II alveolar cells
🔴 RATIONALE: Type II alveolar cells secrete pulmonary surfactant, a mixture of phospholipids and proteins that reduces surface tension within the
alveoli, preventing collapse during expiration.
,Question 4
A patient undergoes a total gastrectomy due to severe gastric cancer. The nurse should closely monitor the patient for the development of which
vitamin deficiency?
A. Vitamin B12
B. Vitamin C
C. Vitamin D
D. Vitamin K
🟢 A. Vitamin B12
🔴 RATIONALE: Parietal cells in the stomach mucosa secrete intrinsic factor, which is essential for the absorption of Vitamin B12 in the ileum.
Without a stomach, supplemental B12 must be administered parenterally.
Question 5
Which nephron segment is the primary site for the bulk reabsorption of water, ions, and organic nutrients filtered by the glomerulus?
A. Loop of Henle
B. Distal convoluted tubule
C. Collecting duct
D. Proximal convoluted tubule
🟢 D. Proximal convoluted tubule
🔴 RATIONALE: The proximal convoluted tubule reabsorbs approximately 65% of the filtered water, sodium, and potassium, along with 100% of
filtered glucose and amino acids under normal conditions.
Question 6
An arterial blood gas (ABG) report shows a pH of 7.25, a pCO2 of 55 mmHg, and a HCO3- of 24 mEq/L. Which acid-base imbalance is present?
A. Metabolic acidosis
B. Respiratory acidosis
, C. Metabolic alkalosis
D. Respiratory alkalosis
🟢 B. Respiratory acidosis
🔴 RATIONALE: A pH below 7.35 indicates acidosis, and an elevated pCO2 above 45 mmHg demonstrates that the root cause is respiratory
retention of carbon dioxide.
Question 7
Which hormone is secreted by the juxtaglomerular cells of the kidneys in response to low systemic blood pressure?
A. Angiotensin II
B. Aldosterone
C. Renin
D. Antidiuretic hormone
🟢 C. Renin
🔴 RATIONALE: Juxtaglomerular apparatus cells sense drops in renal perfusion pressure or sympathetic stimulation and release renin, which
initiates the renin-angiotensin-aldosterone system.
Question 8
What prevents the backflow of food from the stomach into the esophagus during normal digestion?
A. Pyloric sphincter
B. Ileocecal valve
C. Lower esophageal sphincter
D. Upper esophageal sphincter
🟢 C. Lower esophageal sphincter
🔴 RATIONALE: The lower esophageal sphincter maintains a high-pressure zone at the gastroesophageal junction to prevent acidic gastric contents
from refluxing into the esophagus.
–QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
*Core Domains:*
*- Cardiovascular System Anatomy and Physiology*
*- Lymphatic System and Immunity*
*- Respiratory System Mechanics and Gas Exchange*
*- Digestive System Processes and Nutrition*
*- Urinary System Function and Fluid Balance*
*- Endocrine Regulation of Homeostasis*
*- Electrolyte and Acid-Base Balance*
*- Clinical Correlations and Lab Applications*
The BIOS 252 Weeks 5, 6, and 7 Comprehensive Assessment is designed to evaluate advanced mastery of human anatomy and physiology II
principles. This examination assesses essential clinical knowledge, anatomical identification, and physiological processes critical for nursing and
healthcare professions. Comprising multiple-choice and scenario-based questions, the assessment emphasizes real-world clinical application,
diagnostic reasoning, and ethical decision-making. Students must synthesize foundational theory with laboratory observations to solve complex
pathophysiological problems. The structure challenges critical thinking regarding homeostatic imbalances, regulatory feedback mechanisms, and
therapeutic interventions, ensuring readiness for professional clinical practice.
SECTION ONE: QUESTIONS 1–100
Question 1
A 45-year-old patient presents with severe swelling in the right lower extremity following a surgical lymph node dissection. Which of the following
mechanisms best explains the development of this lymphedema?
A. Increased capillary hydrostatic pressure
B. Decreased plasma colloid osmotic pressure
C. Obstruction of lymphatic drainage
D. Increased capillary permeability
,🟢 C. Obstruction of lymphatic drainage
🔴 RATIONALE: Surgical removal or dissection of lymph nodes disrupts the normal pathway of lymphatic return, leading to the accumulation of
interstitial fluid in the affected limb, a condition known as lymphedema.
Question 2
During a laboratory simulation, a student observes a blood smear showing an abnormally high count of polymorphonuclear leukocytes with multi-
lobed nuclei. This finding most likely indicates which of the following conditions?
A. Chronic parasitic infection
B. Acute bacterial infection
C. Severe allergic reaction
D. Viral mononucleosis
🟢 B. Acute bacterial infection
🔴 RATIONALE: Neutrophils, also known as polymorphonuclear leukocytes, are the primary responders to acute bacterial infections and undergo
rapid proliferation to phagocytize pathogens.
Question 3
Which of the following cellular structures in the respiratory membrane is directly responsible for producing pulmonary surfactant to prevent alveolar
collapse?
A. Type I alveolar cells
B. Alveolar macrophages
C. Type II alveolar cells
D. Goblet cells
🟢 C. Type II alveolar cells
🔴 RATIONALE: Type II alveolar cells secrete pulmonary surfactant, a mixture of phospholipids and proteins that reduces surface tension within the
alveoli, preventing collapse during expiration.
,Question 4
A patient undergoes a total gastrectomy due to severe gastric cancer. The nurse should closely monitor the patient for the development of which
vitamin deficiency?
A. Vitamin B12
B. Vitamin C
C. Vitamin D
D. Vitamin K
🟢 A. Vitamin B12
🔴 RATIONALE: Parietal cells in the stomach mucosa secrete intrinsic factor, which is essential for the absorption of Vitamin B12 in the ileum.
Without a stomach, supplemental B12 must be administered parenterally.
Question 5
Which nephron segment is the primary site for the bulk reabsorption of water, ions, and organic nutrients filtered by the glomerulus?
A. Loop of Henle
B. Distal convoluted tubule
C. Collecting duct
D. Proximal convoluted tubule
🟢 D. Proximal convoluted tubule
🔴 RATIONALE: The proximal convoluted tubule reabsorbs approximately 65% of the filtered water, sodium, and potassium, along with 100% of
filtered glucose and amino acids under normal conditions.
Question 6
An arterial blood gas (ABG) report shows a pH of 7.25, a pCO2 of 55 mmHg, and a HCO3- of 24 mEq/L. Which acid-base imbalance is present?
A. Metabolic acidosis
B. Respiratory acidosis
, C. Metabolic alkalosis
D. Respiratory alkalosis
🟢 B. Respiratory acidosis
🔴 RATIONALE: A pH below 7.35 indicates acidosis, and an elevated pCO2 above 45 mmHg demonstrates that the root cause is respiratory
retention of carbon dioxide.
Question 7
Which hormone is secreted by the juxtaglomerular cells of the kidneys in response to low systemic blood pressure?
A. Angiotensin II
B. Aldosterone
C. Renin
D. Antidiuretic hormone
🟢 C. Renin
🔴 RATIONALE: Juxtaglomerular apparatus cells sense drops in renal perfusion pressure or sympathetic stimulation and release renin, which
initiates the renin-angiotensin-aldosterone system.
Question 8
What prevents the backflow of food from the stomach into the esophagus during normal digestion?
A. Pyloric sphincter
B. Ileocecal valve
C. Lower esophageal sphincter
D. Upper esophageal sphincter
🟢 C. Lower esophageal sphincter
🔴 RATIONALE: The lower esophageal sphincter maintains a high-pressure zone at the gastroesophageal junction to prevent acidic gastric contents
from refluxing into the esophagus.
