Final answer:
The study of the structure and growth of the nails falls under the category of Biology and concerns the integumentary system.
Step-by-step explanation:
The correct answer is option Biology. The study of the structure and growth of the nails is a topic specifically dealt with within the field of biology, more precisely under the study of the integumentary system. The anatomy of a nail includes the nail root, nail plate (external, visible part), and the nail bed (rich in blood vessels, giving it a pink appearance).
Nails are composed of densely packed dead keratinocytes and grow from a deep layer of living epidermal tissues known as the nail matrix, located at the proximal end of the nail.
The matrix contains stem cells that divide to form keratinocytes, supporting continuous nail growth. The nail cuticle, also known as the eponychium, the nail fold, and the hyponychium are other structures associated with the nails.
Understanding how the nail grows and its various parts is essential for a range of medical and cosmetic purposes. The growth rate and appearance of nails can also help in assessing health, as the color and growth patterns can indicate various conditions.
The study of the structure and growth of nails is a part of the field of biology, specifically the study of the integumentary system.
Nails are accessory structures of the integumentary system and grow from a deep layer of living epidermal tissue called the nail matrix. The nail matrix contains stem cells that divide to form keratinocytes, which produce keratin and make up the nail.