What is the shape of a tightly curled hair follicle?

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Multiple Choice

What is the shape of a tightly curled hair follicle?

Explanation:
The way the hair exits the skin is shaped by the follicle’s geometry. A tightly curled hair tends to grow from an elliptical (oval) follicle, where one dimension is longer than the other. That elongated shape directs the hair to emerge at an angle and encourages it to twist as it grows, producing a pronounced curl. If the follicle were circular, the hair would more likely grow straight out. A linear or irregular follicle would lead to less defined or inconsistent curl. So, the elliptical follicle shape best explains why tightly curled hair forms its characteristic curl.

The way the hair exits the skin is shaped by the follicle’s geometry. A tightly curled hair tends to grow from an elliptical (oval) follicle, where one dimension is longer than the other. That elongated shape directs the hair to emerge at an angle and encourages it to twist as it grows, producing a pronounced curl. If the follicle were circular, the hair would more likely grow straight out. A linear or irregular follicle would lead to less defined or inconsistent curl. So, the elliptical follicle shape best explains why tightly curled hair forms its characteristic curl.

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