CERTIFIED AESTHETIC NURSE SPECIALIST (CANS®)
PRACTICE EXAM Comprehensive Examination
Preparation Resource Questions with Answers and
Rationales | Already Graded A+
Question 1: Which muscle is the primary target for treating glabellar frown
lines (the "11s" between the eyebrows)?
A. Frontalis
B. Corrugator supercilii
C. Orbicularis oculi
D. Procerus
Answer: B
Rationale: The corrugator supercilii muscle is primarily responsible for
glabellar frown lines between the brows. This muscle pulls the eyebrows
medially and depresses the brow. Understanding this anatomy is essential for
safe and effective botulinum toxin administration.
Question 2: Which muscle is the primary target for treating crow's feet
(lateral canthal lines)?
A. Frontalis
B. Corrugator supercilii
C. Orbicularis oculi
D. Procerus
Answer: C
Rationale: The orbicularis oculi muscle surrounds the eye and is responsible
for crow's feet (lateral canthal lines). The lateral portion of this muscle is
targeted for botulinum toxin to soften these dynamic wrinkles.
Question 3: What is a common adverse effect of botulinum toxin injection in
the forehead?
,A. Hyperpigmentation
B. Nodule formation
C. Ptosis (eyelid droop)
D. Telangiectasia
Answer: C
Rationale: Diffusion of botulinum toxin into the levator palpebrae muscle can
cause eyelid droop (ptosis). This is a recognized complication that typically
resolves as the toxin is metabolized. Proper injection technique and dosing
minimize this risk.
Question 4: Which cranial nerve branch innervates the frontalis muscle?
A. Trigeminal nerve (CN V)
B. Temporal branch of facial nerve (CN VII)
C. Hypoglossal nerve (CN XII)
D. Accessory nerve (CN XI)
Answer: B
Rationale: The temporal branch of cranial nerve VII (facial nerve) supplies
the frontalis muscle, allowing forehead elevation. This is important to know
for safe injection, as the temporal branch also innervates other muscles and
can be affected by toxin diffusion.
Question 5: The procerus muscle is responsible for which facial expression?
A. Elevating the eyebrows
B. Depressing the medial brow and creating horizontal nasal wrinkles
C. Closing the eyelids
D. Smiling
Answer: B
Rationale: The procerus muscle originates from the nasal bone and inserts
into the lower forehead. It pulls the medial brow downward and creates
horizontal wrinkles across the bridge of the nose.
,Question 6: Which neurotoxin product is known as incobotulinumtoxinA?
A. Botox (onabotulinumtoxinA)
B. Dysport (abobotulinumtoxinA)
C. Xeomin (incobotulinumtoxinA)
D. Jeuveau (prabotulinumtoxinA)
Answer: C
Rationale: Xeomin is the brand name for incobotulinumtoxinA. It has the
smallest molecular complex (150kD) with no accessory proteins, which may
reduce the risk of antibody formation and cross-reactivity.
Question 7: Which statement about botulinum toxin units is TRUE?
A. All botulinum toxin products have different unit potencies and are not
interchangeable
B. All botulinum toxin products have the same unit potency
C. Botox and Dysport are interchangeable unit-for-unit
D. Unit conversion is not important in clinical practice
Answer: A
Rationale: All botulinum toxin products have different unit potencies and are
not interchangeable. Botox, Dysport, Xeomin, and Jeuveau each have unique
dosing equivalencies. Proper conversion is essential to avoid underdosing or
overdosing.
Question 8: The levator labii superioris muscle is responsible for which facial
movement?
A. Depressing the lower lip
B. Elevating the upper lip
C. Closing the eyelids
D. Depressing the eyebrows
Answer: B
, Rationale: The levator labii superioris muscle elevates the upper lip. It is one
of the muscles that contribute to smiling and upper lip positioning. This
muscle may be targeted in aesthetic treatments for perioral rejuvenation.
Question 9: Which muscle is responsible for depressing the corners of the
mouth (creating a frown)?
A. Levator anguli oris
B. Zygomaticus major
C. Depressor anguli oris
D. Orbicularis oris
Answer: C
Rationale: The depressor anguli oris muscle depresses the corners of the
mouth, creating a frown or downward turning of the mouth. This muscle is
sometimes targeted in aesthetic treatments to soften a downturned mouth.
Question 10: The mentalis muscle is located in which area of the face?
A. Forehead
B. Periorbital area
C. Chin
D. Neck
Answer: C
Rationale: The mentalis muscle is located in the chin area. It elevates and
protrudes the lower lip and creates the "peau d'orange" appearance of the
chin when contracted. It may be targeted in treatments for chin dimpling.
Question 11: Which of the following is a contraindication to botulinum toxin
injection?
A. Mild facial asymmetry
B. Pregnancy and lactation
PRACTICE EXAM Comprehensive Examination
Preparation Resource Questions with Answers and
Rationales | Already Graded A+
Question 1: Which muscle is the primary target for treating glabellar frown
lines (the "11s" between the eyebrows)?
A. Frontalis
B. Corrugator supercilii
C. Orbicularis oculi
D. Procerus
Answer: B
Rationale: The corrugator supercilii muscle is primarily responsible for
glabellar frown lines between the brows. This muscle pulls the eyebrows
medially and depresses the brow. Understanding this anatomy is essential for
safe and effective botulinum toxin administration.
Question 2: Which muscle is the primary target for treating crow's feet
(lateral canthal lines)?
A. Frontalis
B. Corrugator supercilii
C. Orbicularis oculi
D. Procerus
Answer: C
Rationale: The orbicularis oculi muscle surrounds the eye and is responsible
for crow's feet (lateral canthal lines). The lateral portion of this muscle is
targeted for botulinum toxin to soften these dynamic wrinkles.
Question 3: What is a common adverse effect of botulinum toxin injection in
the forehead?
,A. Hyperpigmentation
B. Nodule formation
C. Ptosis (eyelid droop)
D. Telangiectasia
Answer: C
Rationale: Diffusion of botulinum toxin into the levator palpebrae muscle can
cause eyelid droop (ptosis). This is a recognized complication that typically
resolves as the toxin is metabolized. Proper injection technique and dosing
minimize this risk.
Question 4: Which cranial nerve branch innervates the frontalis muscle?
A. Trigeminal nerve (CN V)
B. Temporal branch of facial nerve (CN VII)
C. Hypoglossal nerve (CN XII)
D. Accessory nerve (CN XI)
Answer: B
Rationale: The temporal branch of cranial nerve VII (facial nerve) supplies
the frontalis muscle, allowing forehead elevation. This is important to know
for safe injection, as the temporal branch also innervates other muscles and
can be affected by toxin diffusion.
Question 5: The procerus muscle is responsible for which facial expression?
A. Elevating the eyebrows
B. Depressing the medial brow and creating horizontal nasal wrinkles
C. Closing the eyelids
D. Smiling
Answer: B
Rationale: The procerus muscle originates from the nasal bone and inserts
into the lower forehead. It pulls the medial brow downward and creates
horizontal wrinkles across the bridge of the nose.
,Question 6: Which neurotoxin product is known as incobotulinumtoxinA?
A. Botox (onabotulinumtoxinA)
B. Dysport (abobotulinumtoxinA)
C. Xeomin (incobotulinumtoxinA)
D. Jeuveau (prabotulinumtoxinA)
Answer: C
Rationale: Xeomin is the brand name for incobotulinumtoxinA. It has the
smallest molecular complex (150kD) with no accessory proteins, which may
reduce the risk of antibody formation and cross-reactivity.
Question 7: Which statement about botulinum toxin units is TRUE?
A. All botulinum toxin products have different unit potencies and are not
interchangeable
B. All botulinum toxin products have the same unit potency
C. Botox and Dysport are interchangeable unit-for-unit
D. Unit conversion is not important in clinical practice
Answer: A
Rationale: All botulinum toxin products have different unit potencies and are
not interchangeable. Botox, Dysport, Xeomin, and Jeuveau each have unique
dosing equivalencies. Proper conversion is essential to avoid underdosing or
overdosing.
Question 8: The levator labii superioris muscle is responsible for which facial
movement?
A. Depressing the lower lip
B. Elevating the upper lip
C. Closing the eyelids
D. Depressing the eyebrows
Answer: B
, Rationale: The levator labii superioris muscle elevates the upper lip. It is one
of the muscles that contribute to smiling and upper lip positioning. This
muscle may be targeted in aesthetic treatments for perioral rejuvenation.
Question 9: Which muscle is responsible for depressing the corners of the
mouth (creating a frown)?
A. Levator anguli oris
B. Zygomaticus major
C. Depressor anguli oris
D. Orbicularis oris
Answer: C
Rationale: The depressor anguli oris muscle depresses the corners of the
mouth, creating a frown or downward turning of the mouth. This muscle is
sometimes targeted in aesthetic treatments to soften a downturned mouth.
Question 10: The mentalis muscle is located in which area of the face?
A. Forehead
B. Periorbital area
C. Chin
D. Neck
Answer: C
Rationale: The mentalis muscle is located in the chin area. It elevates and
protrudes the lower lip and creates the "peau d'orange" appearance of the
chin when contracted. It may be targeted in treatments for chin dimpling.
Question 11: Which of the following is a contraindication to botulinum toxin
injection?
A. Mild facial asymmetry
B. Pregnancy and lactation
