FAC FAC Facial Anatomy & Physiology 1 — Questions and Answers
Question 1: Which layer of the skin contains collagen and elastin fibers responsible for skin firmness?
- Epidermis
- Dermis (Correct answer)
- Hypodermis
- Stratum corneum
Correct answer: Dermis
The dermis contains collagen and elastin fibers that provide skin with structural support and elasticity.
Question 2: The nasolabial fold runs from which anatomical landmarks?
- Corners of the mouth to the chin
- Nose wings to the corners of the mouth (Correct answer)
- Inner eye corners to the nose tip
- Forehead to the cheekbones
Correct answer: Nose wings to the corners of the mouth
The nasolabial fold extends from the alar base of the nose to the corners of the mouth.
Question 3: Which facial muscle is primarily responsible for raising the eyebrows?
- Orbicularis oculi
- Zygomaticus major
- Frontalis (Correct answer)
- Corrugator supercilii
Correct answer: Frontalis
The frontalis muscle elevates the eyebrows and creates horizontal forehead lines when contracted.
Question 4: The superficial musculoaponeurotic system (SMAS) is significant in facial aesthetics because it:
- Produces sebum for skin hydration
- Acts as the structural layer connecting skin to deeper facial muscles (Correct answer)
- Contains the major blood supply to the face
- Generates collagen during wound healing
Correct answer: Acts as the structural layer connecting skin to deeper facial muscles
The SMAS is a fibromuscular layer that connects facial skin to underlying muscles and is a key surgical and injection landmark.
Question 5: Which nerve provides motor innervation to most muscles of facial expression?
- Trigeminal nerve (CN V)
- Facial nerve (CN VII) (Correct answer)
- Hypoglossal nerve (CN XII)
- Glossopharyngeal nerve (CN IX)
Correct answer: Facial nerve (CN VII)
The facial nerve (cranial nerve VII) branches throughout the face to control muscles of facial expression.
Question 6: The Fitzpatrick skin type scale is used in facial aesthetics primarily to:
- Determine the patient's BMI
- Classify skin by response to UV exposure and guide treatment selection (Correct answer)
- Measure skin hydration levels
- Assess bone structure for filler placement
Correct answer: Classify skin by response to UV exposure and guide treatment selection
The Fitzpatrick scale categorizes skin types I–VI based on melanin content and UV sensitivity to guide laser, peel, and treatment planning.
FAC FAC Facial Anatomy & Physiology 1
Which layer of the skin contains collagen and elastin fibers responsible for skin firmness?