Final answer:
The fatty tissue below the skin that creates body smoothness and contour is adipose tissue, made up of cells called adipocytes storing fat as triglycerides.
Step-by-step explanation:
The fatty tissue below the skin that creates smoothness and contour of the body is known as adipose tissue. Adipose tissue consists of fat-storing cells called adipocytes that collect and store fat in the form of triglycerides. This tissue functions in energy metabolism, insulation to maintain body temperatures, and as protective cushioning against damage to body organs. The hypodermis, also referred to as the subcutaneous layer, is where most of the body's adipose tissue resides, providing a connection between the skin and the underlying fascia of the bones and muscles.