Description. 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). Epidermis: Definition. Angiogenesis 2. The establishment of a dermal papilla (DP) is vital to the development of all hair follicles. Keratin 15. Total Cards. Dermal papillae 10. 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. Melanocyte 4. 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. 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. Dermis 11. Capillaries 9. Adipose tissue 7. 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. They are derived from the embryonic mesoderm They aggregate in the dermis just below the epidermis. Term. Dermatology: Definition. Fibroblast 3. The distinctive sheath of modified Schwann cells surrounds one or two nerve fibers poised to detect fine touch of the overlying epidermis. 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 DP is a group of specialized dermal fibroblast cells. The dermal papilla is responsible for regulating the hair cycle and hair growth and is also comprised of androgen … Areolar connective tissue 8. Desquamation 12. Anatomy and Physiology. 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 The hair follicle is an organ found in mammalian skin. NAME:_____ DATE:_____ Anatomy & Physiology Mr. Mucous membrane 5. Backer Chapter 4: The Skin and Its Parts 1. Pigmentation 6. study of the structure, function, and disorders of the integumentary system: Term. Epidermis 13. Chapter 5- Integumentary System. Anatomy of Hair Parts of the Hair. Dermal Papillae. However, these terms are not always accurately descriptive of the three dimensional configuration of the region of interdigitation. dermal papilla: (plural = dermal papillae) extension of the papillary layer of the dermis that increases surface contact between the epidermis and dermis dermis: layer of skin between the epidermis and hypodermis, composed mainly of connective tissue and containing blood vessels, hair follicles, sweat glands, and other structures Langerhans cells 16. Is an organ found in mammalian Skin hair follicle is an organ found in mammalian Skin )... The characteristic architecture of a Meissner 's corpuscle occupying a portion of a Meissner 's corpuscle occupying a portion a.: _____ Anatomy & Physiology Mr of interdigitation the hair follicle is an organ in. 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