Answer :
The structure in the skin that controls blood flow, adjusts gland secretion rates, and monitors sensory receptors in the dermis and the deep layers of the epidermis is the Subpapillary plexus.
1. Subpapillary plexus: This structure is located below the papillary layer of the dermis. It consists of a network of blood vessels that regulate blood flow to the skin and help in thermoregulation. The subpapillary plexus plays a key role in adjusting gland secretion rates, such as sweat glands, and monitoring sensory receptors, including touch and pressure receptors.
2. Cutaneous plexus: The cutaneous plexus is another network of blood vessels located deeper in the skin than the subpapillary plexus. While it also plays a role in blood flow regulation, it is not primarily responsible for adjusting gland secretion rates or monitoring sensory receptors.
3. Papillary plexus: This plexus is situated in the papillary layer of the dermis and is involved in nourishing the epidermis. It is important for supplying nutrients to the epidermal cells but does not have a direct role in controlling blood flow, adjusting gland secretion rates, or monitoring sensory receptors.
4. Nerve fibers: Nerve fibers are responsible for transmitting sensory information to the brain and controlling various functions in the skin, but they do not specifically control blood flow or gland secretion rates.
In summary, the Subpapillary plexus is the structure that fulfills the functions of controlling blood flow, adjusting gland secretion rates, and monitoring sensory receptors in the skin.