Final answer:
The subcutaneous layer mainly contains adipocytes (option b), which are fat-storing cells. Langerhans cells in the skin help combat bacterial intrusion from wounds. Keratinocytes are the primary targets of squamous cell carcinomas in the skin.
Step-by-step explanation:
The most common type of cells in the subcutaneous layer is adipocytes. These are fat-storing cells that make up the majority of the subcutaneous layer, providing insulation and acting as an energy reserve.
Now, to address other related queries:
- If you cut yourself and bacteria enter the wound, Langerhans cells would help get rid of the bacteria.
- Regarding skin cancers, squamous cell carcinomas affect keratinocytes which are the most abundant cells in the epidermis.
- The epidermis consists of various cell types, including keratinocytes, melanocytes, Langerhans cells, and Merkel cells, with keratinocytes being the most prevalent.
The subcutaneous layer, also known as the hypodermis, is primarily composed of adipose tissue which contains the adipocytes.