The implantation angle of a hair is increased when the

Question

Quizplus · Accepted Answer

The arrector pili muscle is responsible for causing the hair to stand upright when we experience emotions such as fear or cold. When this muscle contracts, it pulls on the hair follicle, causing it to stand up and increase the implantation angle of the hair. Therefore, option A is the correct answer. Conversely, when the muscle relaxes, the hair returns to its normal position. The erector pili muscle is another name for the arrector pili muscle, and so options C and D are not relevant.

The Implantation Angle of a Hair Is Increased When the