In hair that grows tightly curled, the follicle is typically which shape?

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Multiple Choice

In hair that grows tightly curled, the follicle is typically which shape?

Explanation:
When hair grows tightly curled, the follicle is typically elliptical in cross-section. The shape of the follicle guides how the hair shaft emerges. A circular follicle yields a straight shaft because the cells keratinize evenly and the strand grows out straight. An elliptical, more flattened follicle causes the hair to exit at an angle and twist as it grows, producing curl. The tighter the ellipse, the curlier the result. Sometimes a mildly elliptical follicle gives wavy hair, while terms like square aren’t standard descriptors for follicle shape.

When hair grows tightly curled, the follicle is typically elliptical in cross-section. The shape of the follicle guides how the hair shaft emerges. A circular follicle yields a straight shaft because the cells keratinize evenly and the strand grows out straight. An elliptical, more flattened follicle causes the hair to exit at an angle and twist as it grows, producing curl. The tighter the ellipse, the curlier the result. Sometimes a mildly elliptical follicle gives wavy hair, while terms like square aren’t standard descriptors for follicle shape.

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