Question

What is the purpose of dermal or friction ridges? What does the imprint of a fingerprint consist of?

Answer 1

Answer: All fingers, toes, feet, and palms are covered in small ridges. These are raised portions of the skin, arranged in connected units called dermal, or friction, ridges. They help us with our grip on objects that we touch. When these ridges press against things, they leave a mark, an impression called a fingerprint.

Explanation:

Answer 2

Answer:

Their purpose on the body is to increase the surface area and increase friction so hands can firmly grasp things, and feet do not slip when walking.

The imprint of a fingerprint consists of natural secretions of the sweat glands that are present in the friction ridge of the skin

Explanation:

They help us with our grip on objects that we touch. When these ridges press against things, they leave a mark, an impression called a fingerprint.