Final answer:
The subcutaneous tissue, or hypodermis, is made of connective tissue and fat, providing insulation, energy storage, and protection. It contains essential components like collagen and elastin, in addition to blood vessels and nerves.
Step-by-step explanation:
Subcutaneous Tissue
The subcutaneous tissue, also known as the hypodermis, is the innermost layer of the skin. This layer is primarily made up of connective tissue and fat. The connective tissue consists of fibrous proteins like collagen and elastin, which provide strength and elasticity. The fat contained within the subcutaneous tissue acts as insulation and energy storage. Additionally, this layer contains blood vessels, nerves, and hair follicle roots. It functions in thermoregulation, protection, and as a padding layer to cushion the internal organs against external impacts.
The types of tissues found in the human body include epithelial tissue, which covers body surfaces and lines cavities; connective tissue that supports and integrates different parts of the body; muscle tissue, which is responsible for movement; and nervous tissue that propagates information throughout the body.