EVERYDAY SCIENCE

Detailed explanation-1: -cuticle, the outer layer or part of an organism that comes in contact with the environment. In many invertebrates the dead, noncellular cuticle is secreted by the epidermis. This layer may, as in the arthropods, contain pigments and chitin; in humans the cuticle is the epidermis.

Detailed explanation-2: -The integumentary system is the largest organ of the body that forms a physical barrier between the external environment and the internal environment that it serves to protect and maintain. The integumentary system includes the epidermis, dermis, hypodermis, associated glands, hair, and nails.

Detailed explanation-3: -The top layer of the epidermis. This is the layer of the epidermis that you see. In the stratum corneum, keratinocytes become corneocytes (corn-ee-o-site). Corneocytes are strong, dead keratinocytes, and they protect you from harm, including abrasions, light, heat and pathogens.

Detailed explanation-4: -Below the epidermis is the dermis. This is where our blood vessels, nerve endings, sweat glands, and hair follicles are. The dermis nourishes the epidermis.