,CST EXAM ACTUAL EXAM VERSIONS (VERSION A AND B) COMPLETE
QUESTIONS WITH DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) / ALREADY GRADED A+ | NBSTSA Certified Surgical
Technologist Test Bank | 2026/2027 Update
Question 1
Which of the following microorganisms is most commonly associated
with surgical site infections (SSIs)?
• A) Pseudomonas aeruginosa
• B) Staphylococcus aureus
• C) Escherichia coli
• D) Streptococcus pneumoniae
Correct Answer: B
Detailed Explanation: Staphylococcus aureus, including methicillin-
resistant strains (MRSA), is part of the normal skin flora and is the
leading cause of surgical site infections worldwide.
Question 2
What is the primary physiological function of the liver regarding
metabolism?
• A) Production of insulin and glucagon
• B) Filtration of old red blood cells exclusively
• C) Storage of glycogen and detoxification of blood
• D) Secretion of digestive enzymes directly into the stomach
Correct Answer: C
,Detailed Explanation: The liver is vital for carbohydrate metabolism
(storing excess glucose as glycogen), lipid metabolism, protein
synthesis, and detoxification of metabolic waste and drugs.
Question 3
Which cranial nerve is responsible for the sense of smell?
• A) CN I (Olfactory)
• B) CN II (Optic)
• C) CN V (Trigeminal)
• D) CN VII (Facial)
Correct Answer: A
Detailed Explanation: Cranial Nerve I is the olfactory nerve, which
transmits sensory information regarding smells from the nasal mucosa
to the brain.
Question 4
During a surgical procedure, a patient exhibits malignant hyperthermia.
Which medication is the specific reversal agent that must be
administered immediately?
• A) Naloxone
• B) Dantrolene sodium
• C) Flumazenil
• D) Protamine sulfate
Correct Answer: B
, Detailed Explanation: Dantrolene sodium is a skeletal muscle relaxant
that acts as the specific antidote and treatment for malignant
hyperthermia by slowing down cellular metabolism and calcium release
in muscle cells.
Question 5
Which blood vessel supplies oxygenated blood directly to the
myocardium?
• A) Pulmonary artery
• B) Coronary artery
• C) Carotid artery
• D) Aorta
Correct Answer: B
Detailed Explanation: The coronary arteries branch off the base of the
ascending aorta to supply oxygen-rich blood directly to the heart
muscle (myocardium).
Question 6
What is the normal physiological range for adult blood pH?
• A) 7.25–7.35
• B) 7.35–7.45
• C) 7.45–7.55
• D) 7.00–7.10
Correct Answer: B
QUESTIONS WITH DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) / ALREADY GRADED A+ | NBSTSA Certified Surgical
Technologist Test Bank | 2026/2027 Update
Question 1
Which of the following microorganisms is most commonly associated
with surgical site infections (SSIs)?
• A) Pseudomonas aeruginosa
• B) Staphylococcus aureus
• C) Escherichia coli
• D) Streptococcus pneumoniae
Correct Answer: B
Detailed Explanation: Staphylococcus aureus, including methicillin-
resistant strains (MRSA), is part of the normal skin flora and is the
leading cause of surgical site infections worldwide.
Question 2
What is the primary physiological function of the liver regarding
metabolism?
• A) Production of insulin and glucagon
• B) Filtration of old red blood cells exclusively
• C) Storage of glycogen and detoxification of blood
• D) Secretion of digestive enzymes directly into the stomach
Correct Answer: C
,Detailed Explanation: The liver is vital for carbohydrate metabolism
(storing excess glucose as glycogen), lipid metabolism, protein
synthesis, and detoxification of metabolic waste and drugs.
Question 3
Which cranial nerve is responsible for the sense of smell?
• A) CN I (Olfactory)
• B) CN II (Optic)
• C) CN V (Trigeminal)
• D) CN VII (Facial)
Correct Answer: A
Detailed Explanation: Cranial Nerve I is the olfactory nerve, which
transmits sensory information regarding smells from the nasal mucosa
to the brain.
Question 4
During a surgical procedure, a patient exhibits malignant hyperthermia.
Which medication is the specific reversal agent that must be
administered immediately?
• A) Naloxone
• B) Dantrolene sodium
• C) Flumazenil
• D) Protamine sulfate
Correct Answer: B
, Detailed Explanation: Dantrolene sodium is a skeletal muscle relaxant
that acts as the specific antidote and treatment for malignant
hyperthermia by slowing down cellular metabolism and calcium release
in muscle cells.
Question 5
Which blood vessel supplies oxygenated blood directly to the
myocardium?
• A) Pulmonary artery
• B) Coronary artery
• C) Carotid artery
• D) Aorta
Correct Answer: B
Detailed Explanation: The coronary arteries branch off the base of the
ascending aorta to supply oxygen-rich blood directly to the heart
muscle (myocardium).
Question 6
What is the normal physiological range for adult blood pH?
• A) 7.25–7.35
• B) 7.35–7.45
• C) 7.45–7.55
• D) 7.00–7.10
Correct Answer: B
