PHARMACOLOGY & ANATOMIC SCIENCES 2026
LATEST 2026 UPDATE 100+ QUESTIONS AND
DETAILED VERIFIED ANSWERS FROM ACTUAL
EXAMS TEST GRADE A+
Question 1
A 55-year-old male with heart failure is started on a drug that increases cardiac contractility by
inhibiting the Na+/K+ ATPase pump. Which of the following is the most likely adverse effect?
A) Hyperkalemia
B) Blurred yellow vision
C) Reflex tachycardia
D) Dry cough
Correct Answer: B
Explanation: The drug described is digoxin. Inhibition of Na+/K+ ATPase increases intracellular
calcium, enhancing contractility. Xanthopsia (yellow vision) is a classic sign of digoxin toxicity.
Hyperkalemia (A) is not typical; digoxin can cause hyperkalemia in overdose but not as a routine
adverse effect. Reflex tachycardia (C) is seen with vasodilators, not digoxin. Dry cough (D) is
associated with ACE inhibitors.
Question 2
A 30-year-old female presents with sudden severe chest pain. An ECG shows ST-segment
elevation. Which coronary artery is most commonly occluded in an anterior wall myocardial
infarction?
A) Right coronary artery
B) Left circumflex artery
C) Left anterior descending artery
D) Posterior descending artery
Correct Answer: C
Explanation: The left anterior descending artery (LAD) supplies the anterior wall of the left
ventricle and the interventricular septum. Its occlusion leads to anterior wall MI, the most
common type. The right coronary artery (A) often causes inferior MI. The left circumflex (B)
,causes lateral MI. The posterior descending (D) is a branch of the RCA or circumflex and causes
posterior MI.
Question 3
A patient on warfarin has an INR of 6.5 without bleeding. Which vitamin is directly involved in
the synthesis of clotting factors affected by warfarin?
A) Vitamin A
B) Vitamin D
C) Vitamin E
D) Vitamin K
Correct Answer: D
Explanation: Warfarin inhibits vitamin K epoxide reductase, depleting reduced vitamin K, which
is a cofactor for the gamma-carboxylation of factors II, VII, IX, and X. Vitamin A (A) is involved in
vision. Vitamin D (B) regulates calcium. Vitamin E (C) is an antioxidant.
Question 4
Which structure passes through the foramen ovale in the adult skull?
A) Mandibular nerve (V3)
B) Maxillary nerve (V2)
C) Middle meningeal artery
D) Internal carotid artery
Correct Answer: A
Explanation: The foramen ovale transmits the mandibular nerve (CN V3), accessory meningeal
artery, and lesser petrosal nerve. Maxillary nerve (V2) (B) passes through foramen rotundum.
Middle meningeal artery (C) passes through foramen spinosum. Internal carotid artery (D)
passes through carotid canal.
Question 5
A 45-year-old hypertensive patient is prescribed lisinopril. Which electrolyte imbalance is most
commonly associated with this drug?
A) Hypokalemia
B) Hyperkalemia
,C) Hyponatremia
D) Hypocalcemia
Correct Answer: B
Explanation: Lisinopril is an ACE inhibitor that reduces aldosterone secretion, leading to
potassium retention. Hyperkalemia is a known side effect. Hypokalemia (A) is seen with thiazides
or loop diuretics. Hyponatremia (C) is less common. Hypocalcemia (D) is not typical.
Question 6
During a physical exam, a physician asks the patient to shrug their shoulders against resistance.
Which cranial nerve is being tested?
A) CN X (Vagus)
B) CN XI (Accessory)
C) CN XII (Hypoglossal)
D) CN IX (Glossopharyngeal)
Correct Answer: B
Explanation: The spinal accessory nerve (CN XI) innervates the trapezius and
sternocleidomastoid muscles. Shoulder shrug tests the trapezius. CN X (A) is for pharynx and
larynx. CN XII (C) is for tongue movement. CN IX (D) is for stylopharyngeus and taste.
Question 7
Which of the following drugs is a direct-acting cholinergic agonist used to treat xerostomia in
Sjögren’s syndrome?
A) Atropine
B) Pilocarpine
C) Neostigmine
D) Scopolamine
Correct Answer: B
Explanation: Pilocarpine is a muscarinic agonist that stimulates salivary and sweat glands.
Atropine (A) and scopolamine (D) are anticholinergics that worsen xerostomia. Neostigmine (C)
is an indirect cholinergic agonist (acetylcholinesterase inhibitor) used for myasthenia gravis.
Question 8
, A 60-year-old male has difficulty rising from a squatting position. Weakness of which muscle
group is most likely?
A) Quadriceps femoris
B) Hamstrings
C) Gluteus maximus
D) Iliopsoas
Correct Answer: C
Explanation: Rising from a squat tests hip extension, primarily powered by the gluteus maximus
(inferior gluteal nerve). Quadriceps (A) are for knee extension. Hamstrings (B) assist but are
secondary. Iliopsoas (D) is for hip flexion.
Question 9
A patient on metformin for type 2 diabetes develops lactic acidosis. Metformin’s primary
mechanism of action is:
A) Increasing insulin secretion
B) Decreasing hepatic gluconeogenesis
C) Delaying carbohydrate absorption
D) Increasing peripheral glucose uptake via GLUT4
Correct Answer: B
Explanation: Metformin activates AMPK, reducing hepatic gluconeogenesis and increasing
peripheral glucose uptake, but its primary effect is hepatic. Increasing insulin secretion (A) is
sulfonylureas. Delaying absorption (C) is acarbose. GLUT4 translocation (D) is mainly insulin or
exercise.
Question 10
The ligament that connects the ovary to the uterus is the:
A) Suspensory ligament of ovary
B) Ovarian ligament
C) Round ligament of uterus
D) Broad ligament
Correct Answer: B
Explanation: The ovarian ligament attaches the ovary to the uterine cornu. Suspensory ligament
(A) contains ovarian vessels. Round ligament (C) attaches uterus to labia majora. Broad ligament
(D) is a mesentery, not a direct ovarian-uterine connection.
LATEST 2026 UPDATE 100+ QUESTIONS AND
DETAILED VERIFIED ANSWERS FROM ACTUAL
EXAMS TEST GRADE A+
Question 1
A 55-year-old male with heart failure is started on a drug that increases cardiac contractility by
inhibiting the Na+/K+ ATPase pump. Which of the following is the most likely adverse effect?
A) Hyperkalemia
B) Blurred yellow vision
C) Reflex tachycardia
D) Dry cough
Correct Answer: B
Explanation: The drug described is digoxin. Inhibition of Na+/K+ ATPase increases intracellular
calcium, enhancing contractility. Xanthopsia (yellow vision) is a classic sign of digoxin toxicity.
Hyperkalemia (A) is not typical; digoxin can cause hyperkalemia in overdose but not as a routine
adverse effect. Reflex tachycardia (C) is seen with vasodilators, not digoxin. Dry cough (D) is
associated with ACE inhibitors.
Question 2
A 30-year-old female presents with sudden severe chest pain. An ECG shows ST-segment
elevation. Which coronary artery is most commonly occluded in an anterior wall myocardial
infarction?
A) Right coronary artery
B) Left circumflex artery
C) Left anterior descending artery
D) Posterior descending artery
Correct Answer: C
Explanation: The left anterior descending artery (LAD) supplies the anterior wall of the left
ventricle and the interventricular septum. Its occlusion leads to anterior wall MI, the most
common type. The right coronary artery (A) often causes inferior MI. The left circumflex (B)
,causes lateral MI. The posterior descending (D) is a branch of the RCA or circumflex and causes
posterior MI.
Question 3
A patient on warfarin has an INR of 6.5 without bleeding. Which vitamin is directly involved in
the synthesis of clotting factors affected by warfarin?
A) Vitamin A
B) Vitamin D
C) Vitamin E
D) Vitamin K
Correct Answer: D
Explanation: Warfarin inhibits vitamin K epoxide reductase, depleting reduced vitamin K, which
is a cofactor for the gamma-carboxylation of factors II, VII, IX, and X. Vitamin A (A) is involved in
vision. Vitamin D (B) regulates calcium. Vitamin E (C) is an antioxidant.
Question 4
Which structure passes through the foramen ovale in the adult skull?
A) Mandibular nerve (V3)
B) Maxillary nerve (V2)
C) Middle meningeal artery
D) Internal carotid artery
Correct Answer: A
Explanation: The foramen ovale transmits the mandibular nerve (CN V3), accessory meningeal
artery, and lesser petrosal nerve. Maxillary nerve (V2) (B) passes through foramen rotundum.
Middle meningeal artery (C) passes through foramen spinosum. Internal carotid artery (D)
passes through carotid canal.
Question 5
A 45-year-old hypertensive patient is prescribed lisinopril. Which electrolyte imbalance is most
commonly associated with this drug?
A) Hypokalemia
B) Hyperkalemia
,C) Hyponatremia
D) Hypocalcemia
Correct Answer: B
Explanation: Lisinopril is an ACE inhibitor that reduces aldosterone secretion, leading to
potassium retention. Hyperkalemia is a known side effect. Hypokalemia (A) is seen with thiazides
or loop diuretics. Hyponatremia (C) is less common. Hypocalcemia (D) is not typical.
Question 6
During a physical exam, a physician asks the patient to shrug their shoulders against resistance.
Which cranial nerve is being tested?
A) CN X (Vagus)
B) CN XI (Accessory)
C) CN XII (Hypoglossal)
D) CN IX (Glossopharyngeal)
Correct Answer: B
Explanation: The spinal accessory nerve (CN XI) innervates the trapezius and
sternocleidomastoid muscles. Shoulder shrug tests the trapezius. CN X (A) is for pharynx and
larynx. CN XII (C) is for tongue movement. CN IX (D) is for stylopharyngeus and taste.
Question 7
Which of the following drugs is a direct-acting cholinergic agonist used to treat xerostomia in
Sjögren’s syndrome?
A) Atropine
B) Pilocarpine
C) Neostigmine
D) Scopolamine
Correct Answer: B
Explanation: Pilocarpine is a muscarinic agonist that stimulates salivary and sweat glands.
Atropine (A) and scopolamine (D) are anticholinergics that worsen xerostomia. Neostigmine (C)
is an indirect cholinergic agonist (acetylcholinesterase inhibitor) used for myasthenia gravis.
Question 8
, A 60-year-old male has difficulty rising from a squatting position. Weakness of which muscle
group is most likely?
A) Quadriceps femoris
B) Hamstrings
C) Gluteus maximus
D) Iliopsoas
Correct Answer: C
Explanation: Rising from a squat tests hip extension, primarily powered by the gluteus maximus
(inferior gluteal nerve). Quadriceps (A) are for knee extension. Hamstrings (B) assist but are
secondary. Iliopsoas (D) is for hip flexion.
Question 9
A patient on metformin for type 2 diabetes develops lactic acidosis. Metformin’s primary
mechanism of action is:
A) Increasing insulin secretion
B) Decreasing hepatic gluconeogenesis
C) Delaying carbohydrate absorption
D) Increasing peripheral glucose uptake via GLUT4
Correct Answer: B
Explanation: Metformin activates AMPK, reducing hepatic gluconeogenesis and increasing
peripheral glucose uptake, but its primary effect is hepatic. Increasing insulin secretion (A) is
sulfonylureas. Delaying absorption (C) is acarbose. GLUT4 translocation (D) is mainly insulin or
exercise.
Question 10
The ligament that connects the ovary to the uterus is the:
A) Suspensory ligament of ovary
B) Ovarian ligament
C) Round ligament of uterus
D) Broad ligament
Correct Answer: B
Explanation: The ovarian ligament attaches the ovary to the uterine cornu. Suspensory ligament
(A) contains ovarian vessels. Round ligament (C) attaches uterus to labia majora. Broad ligament
(D) is a mesentery, not a direct ovarian-uterine connection.
