Final answer:
The claim that a thick hypodermis gives the body a flat appearance is false. The hypodermis contains adipose tissue which stores fat, contributing to a fuller figure rather than a flat one.
Step-by-step explanation:
The statement 'A thick hypodermis gives the body a flat appearance' is false. The hypodermis, also known as the subcutaneous layer, is responsible for connecting the skin to the underlying fascia of bones and muscles; it is comprised mainly of adipose tissue, which stores fat. A thicker hypodermis typically results in a more rounded and fuller appearance, not a flat one, due to this accumulation of fat which provides insulation, cushioning, and energy storage.
The fat content in the hypodermis varies depending on several factors such as hormonal levels, genetic factors, and age. This layer of adipose tissue is paramount for insulation and cushioning of the body, which protects underlying structures and organs from trauma. For instance, males and females tend to have different patterns of fat accumulation affected by hormones like testosterone and estrogen. Importantly, as people age, the hypodermis may lose structure leading to changes in skin appearance such as thinning and sagging.