Anatomy & Physiology Related to Electrology Flashcards

Which phase of the hair growth cycle is the MOST effective time to perform electrolysis for permanent hair removal?

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.

The arrector pili muscle is composed of which type of muscle tissue?

Answer: Smooth muscle

The arrector pili is smooth (involuntary) muscle that contracts in response to cold or emotional stimuli, causing 'goosebumps.'

What is the approximate depth of the hair follicle bulb on the face compared to the body?

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.

Which skin layer contains the fibroblasts primarily responsible for collagen and elastin production?

Answer: Dermis

Fibroblasts in the dermis synthesize collagen, elastin, and ground substance that give skin its strength and elasticity.

The sebaceous gland secretes sebum directly into the:

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.

Hypertrichosis differs from hirsutism in that hypertrichosis:

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.

Which nerve fiber type is responsible for transmitting sharp, immediate pain sensations during electrolysis?

Answer: A-delta fibers

A-delta (Aδ) fibers transmit fast, sharp, well-localized pain, which is the initial sensation felt during needle insertion.