Free 5-question sample test with instant feedback. See how ready you are.
Question 1
What is the outermost layer of the hair shaft called?
Answer: The cuticle is the outermost layer of the hair shaft. It consists of overlapping, scale-like cells that protect the inner layers of the hair.
Question 2
Which layer of the hair shaft contains melanin granules that give hair its color?
Answer: The cortex contains melanin granules responsible for hair color. It is the middle layer and makes up the majority of the hair shaft's bulk and strength.
Question 3
What is the innermost layer of the hair shaft called, and is it always present?
Answer: The medulla is the innermost layer of the hair shaft. It is not always present and may be absent in fine or light-colored hair.
Question 4
What is the name of the tiny muscle attached to the hair follicle that causes goosebumps?
Answer: The arrector pili is the small involuntary muscle attached to the hair follicle. When it contracts, it causes the hair to stand upright, producing goosebumps.
Question 5
What structure at the base of the hair follicle supplies nutrients to the hair?
Answer: The dermal papilla is located at the base of the hair follicle and contains blood vessels that supply nutrients and oxygen to the hair. Without a healthy papilla, hair cannot grow.