CME Anatomy & Physiology Related to Electrology 2 — Questions and Answers
Question 1: Which phase of the hair growth cycle is the MOST effective time to perform electrolysis for permanent hair removal?
- Catagen
- Telogen
- Anagen (Correct answer)
- Exogen
Correct answer: Anagen
Anagen is the active growth phase when the hair bulb is deepest and most closely connected to the dermal papilla, making electrolysis most effective.
Question 2: The arrector pili muscle is composed of which type of muscle tissue?
- Skeletal muscle
- Cardiac muscle
- Smooth muscle (Correct answer)
- Striated voluntary muscle
Correct answer: Smooth muscle
The arrector pili is smooth (involuntary) muscle that contracts in response to cold or emotional stimuli, causing 'goosebumps.'
Question 3: What is the approximate depth of the hair follicle bulb on the face compared to the body?
- Face follicles are deeper than body follicles
- Face follicles are shallower than body follicles (Correct answer)
- Depth is the same across all body regions
- Face follicles have no bulb
Correct answer: Face follicles are shallower than body follicles
Facial follicles are generally shallower (1–2.5 mm) than body follicles, which can reach 3–5 mm or deeper depending on hair coarseness.
Question 4: Which skin layer contains the fibroblasts primarily responsible for collagen and elastin production?
- Stratum corneum
- Epidermis
- Dermis (Correct answer)
- Hypodermis
Correct answer: Dermis
Fibroblasts in the dermis synthesize collagen, elastin, and ground substance that give skin its strength and elasticity.
Question 5: The sebaceous gland secretes sebum directly into the:
- Sweat duct
- Hair follicle canal (Correct answer)
- Subcutaneous tissue
- Lymph capillary
Correct answer: Hair follicle canal
Sebaceous glands open into the upper portion of the hair follicle canal, coating the hair shaft and skin surface with sebum.
Question 6: Hypertrichosis differs from hirsutism in that hypertrichosis:
- Occurs only in women
- Is androgen-dependent excess hair
- Is non-androgen-dependent excess hair growth (Correct answer)
- Always requires hormonal treatment
Correct answer: Is non-androgen-dependent excess hair growth
Hypertrichosis is generalized or localized excess hair growth unrelated to androgen levels, while hirsutism is androgen-driven hair growth in women.
Question 7: Which nerve fiber type is responsible for transmitting sharp, immediate pain sensations during electrolysis?
- C fibers
- A-delta fibers (Correct answer)
- A-beta fibers
- A-alpha fibers
Correct answer: A-delta fibers
A-delta (Aδ) fibers transmit fast, sharp, well-localized pain, which is the initial sensation felt during needle insertion.
CME Anatomy & Physiology Related to Electrology 2
Which phase of the hair growth cycle is the MOST effective time to perform electrolysis for permanent hair removal?