2026/2027
ABSA (American Board of Surgical
Assistant) Exam Test Bank
2026/2027 Comprehensive Study
Guide, Practice Questions, Detailed
Rationales, and Certification Exam
Preparation Review
Question 1:
During a surgical maneuver, a 14-year-old patient’s wrist is gently supinated and then
pronated while the arm is positioned at 80° to the torso in supine position. What is the
most accurate description of the thumb’s directional movement during this action?
A. Thumb remains static in neutral position
B. Thumb moves superior then inferior
C. Thumb moves inferior then returns superior
D. Thumb rotates medially then laterally
Correct Answer: C. Thumb moves inferior then returns superior
Rationale: Supination and pronation of the forearm alter the orientation of the radius
and ulna, which in turn changes the spatial direction of the thumb due to rotational
biomechanics. In this positioning, the thumb initially points inferiorly during
supination and returns superiorly during pronation. The other options do not correctly
reflect the rotational anatomical relationship of the upper limb during forearm
movement.
Question 2:
In the prone position, how are the dorsal roots of spinal nerves oriented relative to
ventral roots?
A. Inferior to ventral roots
B. Lateral to ventral roots
C. Superficial to ventral roots
D. Medial to ventral roots
Correct Answer: C. Superficial to ventral roots
,2026/2027
Rationale: In spinal anatomy, dorsal roots (sensory) lie posteriorly and are more
superficial compared to ventral roots (motor), especially in prone positioning. The
other options misrepresent the anatomical layering of spinal nerve structures.
Question 3:
A choledocho-duodenostomy refers to a surgical connection between which two
structures?
A. Duodenum and gallbladder
B. Common bile duct and duodenum
C. Hepatic duct and jejunum
D. Pancreatic duct and stomach
Correct Answer: B. Common bile duct and duodenum
Rationale: Choledocho-duodenostomy is a biliary bypass procedure that connects the
common bile duct directly to the duodenum to restore bile flow. The other structures
are not involved in this specific anastomosis.
Question 4:
Where is the anteromedial portal for knee arthroscopy typically placed?
A. Inferior to patella
B. Proximal and anterior to pes anserinus, medial to patellar ligament
C. Lateral to tibial tuberosity
D. Directly over the joint line posteriorly
Correct Answer: B. Proximal and anterior to pes anserinus, medial to patellar
ligament
Rationale: The anteromedial portal is carefully placed to avoid neurovascular injury
while allowing access to the knee joint. The remaining options are anatomically
incorrect or unsafe entry points.
Question 5:
Epidural anesthesia is administered into which anatomical space?
A. Subarachnoid space
B. Subdural space
C. Space between vertebral canal and dura mater
D. Intramedullary space
Correct Answer: C. Space between vertebral canal and dura mater
,2026/2027
Rationale: Epidural anesthesia is injected into the epidural space, which lies outside
the dura mater but within the vertebral canal. The other spaces are incorrect or
associated with different procedures.
Question 6:
What structure connects the patella to the tibial tuberosity and aids quadriceps
extension?
A. Cruciate ligament
B. Patellar ligament
C. Collateral ligament
D. Meniscus
Correct Answer: B. Patellar ligament
Rationale: The patellar ligament transmits force from the quadriceps muscle to the
tibia, enabling knee extension. The other structures stabilize the joint but do not serve
this function.
Question 7:
The acetabulum is formed by fusion of which bones?
A. Ilium, femur, pubis
B. Ischium, femur, sacrum
C. Ilium, ischium, pubis
D. Pubis, sacrum, coccyx
Correct Answer: C. Ilium, ischium, pubis
Rationale: These three pelvic bones fuse to form the acetabulum, which articulates
with the femoral head. The other combinations are anatomically incorrect.
Question 8:
Which structure receives primary arterial supply from the superior mesenteric artery?
A. Liver
B. Pancreas
C. Spleen
D. Stomach
Correct Answer: B. Pancreas
Rationale: The superior mesenteric artery supplies parts of the pancreas along with
midgut structures. The spleen and stomach are supplied by the celiac trunk branches.
, 2026/2027
Question 9:
The uterine artery is most commonly a branch of which vessel?
A. External iliac artery
B. Internal iliac artery
C. Femoral artery
D. Abdominal aorta
Correct Answer: B. Internal iliac artery
Rationale: The uterine artery arises from the internal iliac artery and supplies the
uterus. The other vessels do not directly give rise to it.
Question 10:
A loss of more than what percentage of blood volume causes a significant drop in
blood pressure and cardiac output?
A. 5%
B. 10%
C. 25%
D. 40%
Correct Answer: B. 10%
Rationale: Even modest blood loss exceeding 10% can begin to reduce circulating
volume enough to affect hemodynamic stability. Larger losses produce more severe
shock.
Question 11:
Trendelenburg position primarily results in:
A. Decreased venous return
B. Increased brain perfusion
C. Decreased cardiac output
D. Reduced intracranial pressure
Correct Answer: B. Increased brain perfusion
Rationale: Trendelenburg position improves venous return and cerebral perfusion by
shifting blood toward the upper body. The other effects are incorrect or secondary.
ABSA (American Board of Surgical
Assistant) Exam Test Bank
2026/2027 Comprehensive Study
Guide, Practice Questions, Detailed
Rationales, and Certification Exam
Preparation Review
Question 1:
During a surgical maneuver, a 14-year-old patient’s wrist is gently supinated and then
pronated while the arm is positioned at 80° to the torso in supine position. What is the
most accurate description of the thumb’s directional movement during this action?
A. Thumb remains static in neutral position
B. Thumb moves superior then inferior
C. Thumb moves inferior then returns superior
D. Thumb rotates medially then laterally
Correct Answer: C. Thumb moves inferior then returns superior
Rationale: Supination and pronation of the forearm alter the orientation of the radius
and ulna, which in turn changes the spatial direction of the thumb due to rotational
biomechanics. In this positioning, the thumb initially points inferiorly during
supination and returns superiorly during pronation. The other options do not correctly
reflect the rotational anatomical relationship of the upper limb during forearm
movement.
Question 2:
In the prone position, how are the dorsal roots of spinal nerves oriented relative to
ventral roots?
A. Inferior to ventral roots
B. Lateral to ventral roots
C. Superficial to ventral roots
D. Medial to ventral roots
Correct Answer: C. Superficial to ventral roots
,2026/2027
Rationale: In spinal anatomy, dorsal roots (sensory) lie posteriorly and are more
superficial compared to ventral roots (motor), especially in prone positioning. The
other options misrepresent the anatomical layering of spinal nerve structures.
Question 3:
A choledocho-duodenostomy refers to a surgical connection between which two
structures?
A. Duodenum and gallbladder
B. Common bile duct and duodenum
C. Hepatic duct and jejunum
D. Pancreatic duct and stomach
Correct Answer: B. Common bile duct and duodenum
Rationale: Choledocho-duodenostomy is a biliary bypass procedure that connects the
common bile duct directly to the duodenum to restore bile flow. The other structures
are not involved in this specific anastomosis.
Question 4:
Where is the anteromedial portal for knee arthroscopy typically placed?
A. Inferior to patella
B. Proximal and anterior to pes anserinus, medial to patellar ligament
C. Lateral to tibial tuberosity
D. Directly over the joint line posteriorly
Correct Answer: B. Proximal and anterior to pes anserinus, medial to patellar
ligament
Rationale: The anteromedial portal is carefully placed to avoid neurovascular injury
while allowing access to the knee joint. The remaining options are anatomically
incorrect or unsafe entry points.
Question 5:
Epidural anesthesia is administered into which anatomical space?
A. Subarachnoid space
B. Subdural space
C. Space between vertebral canal and dura mater
D. Intramedullary space
Correct Answer: C. Space between vertebral canal and dura mater
,2026/2027
Rationale: Epidural anesthesia is injected into the epidural space, which lies outside
the dura mater but within the vertebral canal. The other spaces are incorrect or
associated with different procedures.
Question 6:
What structure connects the patella to the tibial tuberosity and aids quadriceps
extension?
A. Cruciate ligament
B. Patellar ligament
C. Collateral ligament
D. Meniscus
Correct Answer: B. Patellar ligament
Rationale: The patellar ligament transmits force from the quadriceps muscle to the
tibia, enabling knee extension. The other structures stabilize the joint but do not serve
this function.
Question 7:
The acetabulum is formed by fusion of which bones?
A. Ilium, femur, pubis
B. Ischium, femur, sacrum
C. Ilium, ischium, pubis
D. Pubis, sacrum, coccyx
Correct Answer: C. Ilium, ischium, pubis
Rationale: These three pelvic bones fuse to form the acetabulum, which articulates
with the femoral head. The other combinations are anatomically incorrect.
Question 8:
Which structure receives primary arterial supply from the superior mesenteric artery?
A. Liver
B. Pancreas
C. Spleen
D. Stomach
Correct Answer: B. Pancreas
Rationale: The superior mesenteric artery supplies parts of the pancreas along with
midgut structures. The spleen and stomach are supplied by the celiac trunk branches.
, 2026/2027
Question 9:
The uterine artery is most commonly a branch of which vessel?
A. External iliac artery
B. Internal iliac artery
C. Femoral artery
D. Abdominal aorta
Correct Answer: B. Internal iliac artery
Rationale: The uterine artery arises from the internal iliac artery and supplies the
uterus. The other vessels do not directly give rise to it.
Question 10:
A loss of more than what percentage of blood volume causes a significant drop in
blood pressure and cardiac output?
A. 5%
B. 10%
C. 25%
D. 40%
Correct Answer: B. 10%
Rationale: Even modest blood loss exceeding 10% can begin to reduce circulating
volume enough to affect hemodynamic stability. Larger losses produce more severe
shock.
Question 11:
Trendelenburg position primarily results in:
A. Decreased venous return
B. Increased brain perfusion
C. Decreased cardiac output
D. Reduced intracranial pressure
Correct Answer: B. Increased brain perfusion
Rationale: Trendelenburg position improves venous return and cerebral perfusion by
shifting blood toward the upper body. The other effects are incorrect or secondary.
