This is named for its fingerlike projections called papillae, that extend toward the epidermis and contain terminal networks of blood capillaries. Because the main function of the dermis is to support the epidermis, this greatly increases the exchange of oxygen, nutrients, and waste products between these two layers. Dermis definition, the dense inner layer of skin beneath the epidermis, composed of connective tissue, blood and lymph vessels, sweat glands, hair follicles, and an elaborate sensory nerve network. and supply the epidermis with blood. Membrane that secretes mucus that lubricates the surface of organs and keeps them moist. Heather L. Brannon, MD, is a family practice physician in Mauldin, South Carolina. The upper layer, called the stratum papillarosum (papillary layer), is in contact with the epidermis and accounts for about one-fifth of the entire dermis (see fig. This prevents regurgitation—backward flow of ventricular blood into the atrial cavities—by bracing the atrioventricular valves against prolapse—being forced back into the atria by the high pressure in the ventricles. The papillary layer is a thin outer layer of areolar connective tissue with fingerlike projections called dermal papillae that protrude into the epidermis. finger-like processes that fold down from the epidermis into the dermis, dermal insertions into the spaces between rete pegs with ihll-shaped processes, thickness of skin is classified based upon the thickness of the _______, dermal papillae are taller in (thick/thin) skin, anchors the epidermis to the underlying dermis, attachments consisting of special proteins & fibers, ___________ is secreted by the basal cells, includes anchoring filaments that hold the basal cells in place, superficial layer found in & immediately beneath the dermal papillae, papillary dermis is composed of ___________ CT. loose CT within the papillary dermis is composed of (2): majority of fibers found within loose CT of the papillary dermis are: reticular fibers made of collage type III, sensory nerve endings found within the papillary dermis, reticular dermis is composed of ___________ CT. 3 components of dense irregular CT within reticular dermis: dominating component of the dense, irregular CT within reticular dermis: (papillary/reticular) dermis comprises the majority of the dermis, T/F: reticular dermis varies in thickness in different regions of the body, (papillary/reticular) dermis imparts the leather-like characteristic of the skin, sensory nerve endings found within the reticular dermis. This layer contains (endings of) capillaries, lymph vessels and sensory neurons. Both layers of the dermis contain connective tissue components (collagen, elastin, fibroblasts), plus blood vessels, sensory receptors and lymphatics. For example, the dermis on the eyelids is 0.6 millimeters thick; on the back, the palms of hands and the soles of feet, it measures 3 millimeters thick.1 The dermis contains a lot of the body's water supply and it has important roles in both regulating temperature and providing blood to the epidermis. The largest organ in the human body is our skin which is called the integumentary system. corneum, lucidum, granulosum, spinosum, basale. The dermis has two parts: a thin, upper layer known as the papillary dermis, and a thick, lower layer known as the reticular dermis. Answer. 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