Which of the following examples listed below illustrates homeostasis maintained by a negative feedback?
A) Production of vitamin D initiated by the suns UV light striking the skin.
B) Formation of cerumen wax to deter insects from entering the ear.
C) Changes in the response of the hair follicle to dihydrotestosterone (DHT).
D) Thickening of epidermis to form a callus in places where the skin is exposed to friction.

Question

Quizplus · Accepted Answer

Thickening of the epidermis to form a callus in places where the skin is exposed to friction is an example of homeostasis maintained by negative feedback. The friction creates an imbalance in the skin's structure, and the cells respond by proliferating and thickening the skin to protect it from further damage. Once the friction is removed, the cells will stop proliferating and the callus will naturally slough off. This is an example of negative feedback because the body is responding to an external stimulus by creating a change that counteracts the stimulus and returns the body to a state of equilibrium.

Which of the Following Examples Listed Below Illustrates Homeostasis Maintained