Hypodermis

Definition

The hypodermis, also known as the subcutaneous layer, is the deepest layer of the skin that lies below the dermis. It primarily consists of fat and connective tissue which helps insulate the body and protect underlying muscles and bones.

5 Must Know Facts For Your Next Test

1. The hypodermis plays a crucial role in regulating body temperature by providing insulation.
2. It acts as a cushion to absorb shock and protect internal organs from external impacts.
3. This layer contains larger blood vessels and nerves compared to the dermis.
4. Drugs administered via subcutaneous injection are absorbed through the hypodermis.
5. The thickness of the hypodermis varies depending on location on the body and individual factors like age and gender.

Review Questions

• What are the primary functions of the hypodermis?
• Why is the hypodermis an important site for subcutaneous injections?
• How does the composition of the hypodermis contribute to its role in protecting internal structures?

Related terms

Epidermis: The outermost layer of skin that provides a barrier against pathogens.

Dermis: The middle layer of skin that contains collagen, elastic tissue, and various cells involved in sensory perception.

Subcutaneous Injection: A method of administering medication under the skin into the hypodermis for slow absorption.