Capillaries 9. Angiogenesis 2. The dermal papilla is responsible for regulating the hair cycle and hair growth and is also comprised of androgen … study of the structure, function, and disorders of the integumentary system: Term. 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. Hypodermis 14. The hair follicle is an organ found in mammalian 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. 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. Anatomy of Hair Parts of the Hair. Description. Pigmentation 6. Epidermis 13. Areolar connective tissue 8. Dermatology: Definition. Melanocyte 4. Dermis 11. Chapter 5- Integumentary System. 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 Mucous membrane 5. Langerhans cells 16. Epidermis: Definition. Keratin 15. 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 Fibroblast 3. Adipose tissue 7. Backer Chapter 4: The Skin and Its Parts 1. Desquamation 12. Total Cards. Term. NAME:_____ DATE:_____ Anatomy & Physiology Mr. However, these terms are not always accurately descriptive of the three dimensional configuration of the region of interdigitation. 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. The establishment of a dermal papilla (DP) is vital to the development of all hair follicles. DP is a group of specialized dermal fibroblast cells. Dermal papillae 10. 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 Dermal Papillae. The distinctive sheath of modified Schwann cells surrounds one or two nerve fibers poised to detect fine touch of the overlying epidermis. Anatomy and Physiology. 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