The dermis consists of two layers: The papillary layer is a thin outer layer of areolar connective tissue with fingerlike projections called dermal papillae that protrude into the epidermis.In the hands and feet, the dermal papillae generate epidermal ridges (sweat from the epidermal ridges leaves fingerprints). The hair follicle is an organ found in mammalian skin. The dermal papilla is responsible for regulating the hair cycle and hair growth and is also comprised of androgen … Epidermis 13. Anatomy and Physiology. Dermal papillae 10. Melanocyte 4. DP is a group of specialized dermal fibroblast cells. Medical definition of papillary layer: the superficial layer of the dermis raised into papillae that fit into corresponding depressions on the inner surface of the epidermis. A high power view of the dermo-epidermal junction shows the characteristic architecture of a Meissner's corpuscle occupying a portion of a dermal papilla. Chapter 5- Integumentary System. Anatomy of Hair Parts of the Hair. Dermal Papillae. Dermis 11. study of the structure, function, and disorders of the integumentary system: Term. Description. Total Cards. The projections of the dermis are called dermal papillae and those of the epidermis, epidermal ridges (pegs), because of their appearance in vertical sections of the skin. Term. NAME:_____ DATE:_____ Anatomy & Physiology Mr. Dermatology: Definition. However, these terms are not always accurately descriptive of the three dimensional configuration of the region of interdigitation. Mucous membrane 5. Angiogenesis 2. n. Any of the superficial projections of the corium or dermis that interlock with recesses in the overlying epidermis, contain vascular loops and specialized nerve endings, and are arranged in ridgelike lines most prominent in the hand and foot.papilla of corium Hypodermis 14. Tiny smooth involuntary muscle, attached to hair follicle and dermal papillae and cotracts when cold or frightened and produces goosebumps Sebaceous Gland a cutaneous gland that secretes sebum (usually into a hair follicle) for lubricating hair and skin Epidermis: Definition. Desquamation 12. Keratin 15. Capillaries 9. Adipose tissue 7. It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions.The hair follicle regulates hair growth via a complex interaction between hormones, neuropeptides, and immune cells. Pigmentation 6. The establishment of a dermal papilla (DP) is vital to the development of all hair follicles. The distinctive sheath of modified Schwann cells surrounds one or two nerve fibers poised to detect fine touch of the overlying epidermis. They are derived from the embryonic mesoderm They aggregate in the dermis just below the epidermis. 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