NBCE PART 1 - GENERAL ANATOMY BOARD QUESTIONS QUESTIONS AND
VERIFIED ANSWERS (DETAILED & ELABORATED) ACTUAL EXAM 2026 TEST!!
Question 1
In the "clock face" analogy used for a ventrodorsal (VD) thoracic radiograph, at what position is
the pulmonary trunk typically located?
A) 11-12 o'clock
B) 1-2 o'clock
C) 3-5 o'clock
D) 6-9 o'clock
E) 12 o'clock sharp
Correct Answer: B) 1-2 o'clock
Rationale: In a VD thoracic view of a dog, the heart and major vessels are described using a
clock analogy; the pulmonary trunk is found at the 1 to 2 o'clock position, just cranial and
to the left of the midline.
Question 2
Which organ is responsible for creating the "sail sign" frequently seen in a VD radiograph of a
young animal?
A) Heart
B) Spleen
C) Thymus
D) Left Cranial Lung Lobe
E) Liver
Correct Answer: C) Thymus
Rationale: The thymus is large in young animals and often appears as a triangular opacity
on the left side of the cranial mediastinum, resembling a sail.
Question 3
Sympathetic nerves leaving the thoracolumbar levels of the spinal cord reach the cranial cervical
ganglion by traveling through which structure?
A) Phrenic nerve
B) Recurrent laryngeal nerve
C) Vagosympathetic trunk
D) Ansa subclavia
E) Cervicothoracic ganglion
Correct Answer: C) Vagosympathetic trunk
Rationale: The sympathetic fibers destined for the head travel cranially within the carotid
sheath bundled with the vagus nerve, forming the vagosympathetic trunk.
Question 4
Lead gloves and aprons are primary safety equipment in radiology designed to protect the
practitioner against what?
, 2
A) The primary beam
B) Scatter radiation
C) Ultrasound waves
D) Gamma bursts
E) Electromagnetic interference
Correct Answer: B) Scatter radiation
Rationale: While lead protection provides some shielding, its primary purpose in a clinical
setting is to protect the wearer from secondary or "scatter" radiation produced when the
primary beam interacts with the patient.
Question 5
According to the Salter-Harris classification system, which physeal fracture types necessarily
involve an intra-articular component?
A) Types 1 and 2
B) Types 2 and 3
C) Types 3 and 4
D) Types 1 and 5
E) Type 2 only
Correct Answer: C) 3 and 4
Rationale: Salter-Harris Type 3 fractures involve the physis and epiphysis (entering the
joint), and Type 4 fractures involve the metaphysis, physis, and epiphysis (also entering the
joint).
Question 6
Which of the following substances appears as the MOST radiolucent (darkest) on a standard
radiograph?
A) Bone
B) Fat
C) Soft tissue
D) Gas/Air
E) Metal
Correct Answer: D) Gas/Air
Rationale: Radiolucency refers to the ability of X-rays to pass through a substance. Gas/Air
has the lowest density and absorbs the fewest X-rays, appearing blackest on the film.
Question 7
Which of the following statements regarding physeal fractures in young animals is true?
A) They are just as serious as diaphyseal fractures
B) They are NOT easily diagnosed radiographically
C) They should not be considered when there is displacement at the end of a long bone
D) They are never traumatic in origin
, 3
E) They always heal faster than regular fractures
Correct Answer: B) is NOT easily diagnosed radiographically
Rationale: Physeal fractures can be difficult to diagnose because the growth plate is already
a radiolucent line; nondisplaced fractures may require stress views or comparison with the
contralateral limb.
Question 8
In the canine, the opening of the nasolacrimal duct is located in which specific anatomical area?
A) Dorsal nasal cavity near the ethmoids
B) Medial canthus of the eye
C) Ventral nasal cavity at the mucocutaneous junction
D) Oropharynx
E) Maxillary recess
Correct Answer: C) ventral nasal cavity at mucocutaneous junction
Rationale: The nasolacrimal duct drains tears from the eye to the nose, specifically opening
into the ventral floor of the nasal vestibule.
Question 9
Which of the following structures does NOT carry sensory (afferent) fibers?
A) Dorsal rootlets
B) Ventral root
C) Spinal nerve
D) Dorsal root
E) Ventral branch of the spinal nerve
Correct Answer: B) ventral root
Rationale: In the spinal cord, the Bell-Magendie Law states that dorsal roots carry sensory
(afferent) information, while ventral roots carry motor (efferent) information.
Question 10
Surgical removal of an ununited anconeal process (UAP) in a German Shepherd is typically
recommended at what age if it has failed to fuse?
A) 2 months
B) 4 months
C) 6 months
D) 12 months
E) 2 years
Correct Answer: C) 6 months
Rationale: The anconeal process should normally fuse to the ulna by 4–5 months of age. If it
remains ununited by 6 months, it is considered a pathological condition requiring
intervention.
, 4
Question 11
In the canine kidney, what specific part of the renal pelvis surrounds the pseudopapillae?
A) Renal cortex
B) Pelvic recesses
C) Major calyx
D) Ureteric orifice
E) Renal capsule
Correct Answer: B) pelvic recesses
Rationale: The renal pelvis in dogs is expanded into pelvic recesses (diverticula) that project
between the renal pyramids (pseudopapillae).
Question 12
The lateral meniscus is separated from its corresponding collateral ligament by which structure?
A) Cruciate ligament
B) Long digital extensor tendon
C) Popliteus tendon
D) Biceps femoris
E) Patellar ligament
Correct Answer: C) popliteus tendon
Rationale: Unlike the medial meniscus which is attached to the medial collateral ligament,
the lateral meniscus is separated from the lateral collateral ligament by the popliteus
tendon.
Question 13
Which of the following appears as the LEAST radiolucent (most radiopaque/white) on a
radiograph?
A) Fluid
B) Fat
C) Bone
D) Gas
E) Metal
Correct Answer: E) metal
Rationale: Metal has the highest atomic number and density of common radiographic
subjects, absorbing almost all X-rays and appearing bright white.
Question 14
Which of the following structures is NOT primarily composed of corpus spongiosum?
A) Bulb of the penis
B) Glans of the penis
C) Bulb of the glans
D) Ventral part of the body of the penis
VERIFIED ANSWERS (DETAILED & ELABORATED) ACTUAL EXAM 2026 TEST!!
Question 1
In the "clock face" analogy used for a ventrodorsal (VD) thoracic radiograph, at what position is
the pulmonary trunk typically located?
A) 11-12 o'clock
B) 1-2 o'clock
C) 3-5 o'clock
D) 6-9 o'clock
E) 12 o'clock sharp
Correct Answer: B) 1-2 o'clock
Rationale: In a VD thoracic view of a dog, the heart and major vessels are described using a
clock analogy; the pulmonary trunk is found at the 1 to 2 o'clock position, just cranial and
to the left of the midline.
Question 2
Which organ is responsible for creating the "sail sign" frequently seen in a VD radiograph of a
young animal?
A) Heart
B) Spleen
C) Thymus
D) Left Cranial Lung Lobe
E) Liver
Correct Answer: C) Thymus
Rationale: The thymus is large in young animals and often appears as a triangular opacity
on the left side of the cranial mediastinum, resembling a sail.
Question 3
Sympathetic nerves leaving the thoracolumbar levels of the spinal cord reach the cranial cervical
ganglion by traveling through which structure?
A) Phrenic nerve
B) Recurrent laryngeal nerve
C) Vagosympathetic trunk
D) Ansa subclavia
E) Cervicothoracic ganglion
Correct Answer: C) Vagosympathetic trunk
Rationale: The sympathetic fibers destined for the head travel cranially within the carotid
sheath bundled with the vagus nerve, forming the vagosympathetic trunk.
Question 4
Lead gloves and aprons are primary safety equipment in radiology designed to protect the
practitioner against what?
, 2
A) The primary beam
B) Scatter radiation
C) Ultrasound waves
D) Gamma bursts
E) Electromagnetic interference
Correct Answer: B) Scatter radiation
Rationale: While lead protection provides some shielding, its primary purpose in a clinical
setting is to protect the wearer from secondary or "scatter" radiation produced when the
primary beam interacts with the patient.
Question 5
According to the Salter-Harris classification system, which physeal fracture types necessarily
involve an intra-articular component?
A) Types 1 and 2
B) Types 2 and 3
C) Types 3 and 4
D) Types 1 and 5
E) Type 2 only
Correct Answer: C) 3 and 4
Rationale: Salter-Harris Type 3 fractures involve the physis and epiphysis (entering the
joint), and Type 4 fractures involve the metaphysis, physis, and epiphysis (also entering the
joint).
Question 6
Which of the following substances appears as the MOST radiolucent (darkest) on a standard
radiograph?
A) Bone
B) Fat
C) Soft tissue
D) Gas/Air
E) Metal
Correct Answer: D) Gas/Air
Rationale: Radiolucency refers to the ability of X-rays to pass through a substance. Gas/Air
has the lowest density and absorbs the fewest X-rays, appearing blackest on the film.
Question 7
Which of the following statements regarding physeal fractures in young animals is true?
A) They are just as serious as diaphyseal fractures
B) They are NOT easily diagnosed radiographically
C) They should not be considered when there is displacement at the end of a long bone
D) They are never traumatic in origin
, 3
E) They always heal faster than regular fractures
Correct Answer: B) is NOT easily diagnosed radiographically
Rationale: Physeal fractures can be difficult to diagnose because the growth plate is already
a radiolucent line; nondisplaced fractures may require stress views or comparison with the
contralateral limb.
Question 8
In the canine, the opening of the nasolacrimal duct is located in which specific anatomical area?
A) Dorsal nasal cavity near the ethmoids
B) Medial canthus of the eye
C) Ventral nasal cavity at the mucocutaneous junction
D) Oropharynx
E) Maxillary recess
Correct Answer: C) ventral nasal cavity at mucocutaneous junction
Rationale: The nasolacrimal duct drains tears from the eye to the nose, specifically opening
into the ventral floor of the nasal vestibule.
Question 9
Which of the following structures does NOT carry sensory (afferent) fibers?
A) Dorsal rootlets
B) Ventral root
C) Spinal nerve
D) Dorsal root
E) Ventral branch of the spinal nerve
Correct Answer: B) ventral root
Rationale: In the spinal cord, the Bell-Magendie Law states that dorsal roots carry sensory
(afferent) information, while ventral roots carry motor (efferent) information.
Question 10
Surgical removal of an ununited anconeal process (UAP) in a German Shepherd is typically
recommended at what age if it has failed to fuse?
A) 2 months
B) 4 months
C) 6 months
D) 12 months
E) 2 years
Correct Answer: C) 6 months
Rationale: The anconeal process should normally fuse to the ulna by 4–5 months of age. If it
remains ununited by 6 months, it is considered a pathological condition requiring
intervention.
, 4
Question 11
In the canine kidney, what specific part of the renal pelvis surrounds the pseudopapillae?
A) Renal cortex
B) Pelvic recesses
C) Major calyx
D) Ureteric orifice
E) Renal capsule
Correct Answer: B) pelvic recesses
Rationale: The renal pelvis in dogs is expanded into pelvic recesses (diverticula) that project
between the renal pyramids (pseudopapillae).
Question 12
The lateral meniscus is separated from its corresponding collateral ligament by which structure?
A) Cruciate ligament
B) Long digital extensor tendon
C) Popliteus tendon
D) Biceps femoris
E) Patellar ligament
Correct Answer: C) popliteus tendon
Rationale: Unlike the medial meniscus which is attached to the medial collateral ligament,
the lateral meniscus is separated from the lateral collateral ligament by the popliteus
tendon.
Question 13
Which of the following appears as the LEAST radiolucent (most radiopaque/white) on a
radiograph?
A) Fluid
B) Fat
C) Bone
D) Gas
E) Metal
Correct Answer: E) metal
Rationale: Metal has the highest atomic number and density of common radiographic
subjects, absorbing almost all X-rays and appearing bright white.
Question 14
Which of the following structures is NOT primarily composed of corpus spongiosum?
A) Bulb of the penis
B) Glans of the penis
C) Bulb of the glans
D) Ventral part of the body of the penis
