Which skin layer contains blood vessels and nerves?

The dermis is the skin layer that contains blood vessels and nerves. It is situated beneath the epidermis and is much thicker, playing a crucial role in overall skin health and function. The dermis is made up of connective tissue, which provides strength and elasticity, and it houses various structures, including collagen and elastin fibers, hair follicles, sebaceous (oil) glands, and sweat glands, in addition to the blood vessels and nerve endings.

The presence of blood vessels in the dermis is essential for delivering oxygen and nutrients to the skin, while also aiding in thermoregulation. Nerves in this layer allow for sensation, providing the skin's ability to feel touch, pressure, pain, and temperature.

In contrast, the stratum corneum is the outermost layer of the epidermis, primarily composed of dead skin cells and does not contain blood vessels or nerves. The stratum granulosum is also part of the epidermis and is where keratinization begins, playing a role in skin barrier function but lacking the vascular and nerve structures present in the dermis. The hypodermis, or subcutaneous layer, lies below the dermis and primarily consists of fat and connective tissue but does not feature structural details related