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September 12, 2023

Which of the Following is Not a Function of Skin?

The skin is our front-line defense against bacteria, viruses, parasites, fungi, heat, ultraviolet (UV) rays, and water loss. It also helps regulate body temperature and senses the world around us through nerve endings. And, as the largest organ in the human body, it protects our internal organs and blood vessels from damage.

The visible part of the skin is called the epidermis and is made up of several'sheets' of cells. As old epidermal cells slough off the surface, newer cells are pushed up from below to replace them. The epidermis is the outer layer of skin and contains the pigment melanin that gives the skin its colour. In the deeper layers of the epidermis are sweat glands, sebaceous glands, hair follicles and blood vessels. Sweat travels from the glands through tiny ducts to openings in the epidermis called pores.

The skin is the largest organ in the human body and has many important functions, including protection against bacterial infection, excretion of waste and water, production of vitamin D when exposed to sunlight, regulation of body temperature, and sensation. However, it is not involved in calcium production. In fact, calcium is mainly stored in bone tissue and regulated by parathyroid hormone and calcitonin in an endocrine system known as the Parathyroid Hormone-Calcitonin Endocrine System.