ANP 650 FINAL PRACTICE SCRIPT 2026
FULL ANSWERS GRADED A+
⩥ Hair Papilla.
Answer: Dermis that projects into the hair bulb; serves as the blood
supply for the hair.
⩥ Dermal Root Sheath.
Answer: Part of the dermis that surrounds the epithelial root sheath of a
hair follicle.
⩥ Internal Epithelial Root Sheath.
Answer: Contains stratum basale that may remain after injury to supply
new epidermis; visible as a white bulb when hair is pulled out.
⩥ Hair Growth Stage.
Answer: Phase where cells are added at the base and the hair elongates.
⩥ Hair Resting Stage.
Answer: Phase where the follicle shortens and holds the hair in place;
eventually the hair falls out and new hair begins.
⩥ Pattern Baldness.
, Answer: The most common cause of permanent hair loss.
⩥ Alopecia Areata.
Answer: Spot baldness, most likely due to an autoimmune response.
⩥ Hair Color.
Answer: Caused by varying amounts and types of melanin (black-brown
and red); controlled by several genes.
⩥ Arrector Pili.
Answer: Smooth muscle extending from the dermal root sheath to the
papillary layer; contraction causes "goose bumps" (hair stands on end).
⩥ Sebaceous Glands.
Answer: Holocrine glands that secrete sebum; mostly empty into hair
follicles.
⩥ Sebum.
Answer: Oily secretion that prevents drying and inhibits some bacteria.
⩥ Sebaceous Gland Exceptions.
Answer: Found on lips, meibomian glands of eyelids, and genitalia
(where they do not empty into hair follicles).
FULL ANSWERS GRADED A+
⩥ Hair Papilla.
Answer: Dermis that projects into the hair bulb; serves as the blood
supply for the hair.
⩥ Dermal Root Sheath.
Answer: Part of the dermis that surrounds the epithelial root sheath of a
hair follicle.
⩥ Internal Epithelial Root Sheath.
Answer: Contains stratum basale that may remain after injury to supply
new epidermis; visible as a white bulb when hair is pulled out.
⩥ Hair Growth Stage.
Answer: Phase where cells are added at the base and the hair elongates.
⩥ Hair Resting Stage.
Answer: Phase where the follicle shortens and holds the hair in place;
eventually the hair falls out and new hair begins.
⩥ Pattern Baldness.
, Answer: The most common cause of permanent hair loss.
⩥ Alopecia Areata.
Answer: Spot baldness, most likely due to an autoimmune response.
⩥ Hair Color.
Answer: Caused by varying amounts and types of melanin (black-brown
and red); controlled by several genes.
⩥ Arrector Pili.
Answer: Smooth muscle extending from the dermal root sheath to the
papillary layer; contraction causes "goose bumps" (hair stands on end).
⩥ Sebaceous Glands.
Answer: Holocrine glands that secrete sebum; mostly empty into hair
follicles.
⩥ Sebum.
Answer: Oily secretion that prevents drying and inhibits some bacteria.
⩥ Sebaceous Gland Exceptions.
Answer: Found on lips, meibomian glands of eyelids, and genitalia
(where they do not empty into hair follicles).
