Which layer of the skin contains blood vessels and nerve endings?

The layer of the skin that contains blood vessels and nerve endings is the dermis. This layer is situated beneath the epidermis and is significantly thicker than the outer layer of the skin. The dermis plays a crucial role in providing structural support and elasticity to the skin due to its collagen and elastin fibers. It also houses a network of blood vessels, which are essential for supplying nutrients to the skin and regulating temperature.

In addition to blood vessels, the dermis contains various nerve endings that are responsible for the sensory perception of touch, pain, and temperature. This rich supply of blood and nerve tissue is what enables the skin to respond to external stimuli and maintain its health through proper blood circulation.

The epidermis, on the other hand, does not contain blood vessels or nerve endings; it is primarily made up of keratinized cells that form a protective barrier. The hypodermis, although it is beneath the dermis and contains fat cells, serves more as an insulating layer and energy reserve rather than a region rich in blood vessels and nerve endings. The stratum corneum is the outermost layer of the epidermis, composed of dead cells that provide a tough protective barrier but lacks blood vessels and nerve endings as well.