Which part of the skin provides contour and smoothness to the body?

The subcutaneous tissue, also known as the hypodermis, plays a crucial role in providing contour and smoothness to the body. This layer is located beneath the dermis and is primarily composed of loose connective tissue and fat cells. The presence of adipose tissue in the subcutaneous layer serves to cushion and insulate the body, contributing to the overall shape and smooth appearance of the skin. It helps in distributing weight evenly and providing a rounded, contoured look.

While dermal tissue, which contains blood vessels, nerves, and connective tissue, and the epidermis, the outermost layer which serves as a protective barrier, are essential for other functions such as support and protection of the skin, it is the subcutaneous tissue that is primarily responsible for the body's contour and smoothness. Hair follicles, while they are integral to hair growth and skin health, do not contribute directly to the contour or smooth texture of the skin surface. Thus, the subcutaneous tissue is the key component for achieving that smooth, contoured appearance.