Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.

Paragraph- Sent 1: The dermis is the inner layer of skin.
Sent 2: The dermis has blood vessels and nerve endings.
Sent 3: The nerve endings explain why your skin is sensitive.
Sent 4: You can sense pain, pressure, and temperature.
Sent 5: You cut your finger and it starts to bleed.
Sent 6: What has happened?
Sent 7: If your skin bleeds, it means you have cut the dermis layer and damaged blood vessels.
Sent 8: The cut really hurts.
Sent 9: It hurts because of the nerve endings in this skin layer.
Sent 10: The dermis also contains hair follicles and two types of glands.
Sent 11: Hair follicles are structures where hairs originate.
Sent 12: Each hair grows out of a follicle.
Sent 13: Hair passes up through the epidermis.
Sent 14: It then extends above the skin surface.
Sent 15: Oil glands produce an oily substance.
Sent 16: The oil is secreted into hair follicles. 
Question: Where does the cut really hurt?.
Because of the nerve endings under the dermis.