Epidermis y dermis histologia pdf

The epidermis is the thin outer layer of skin, the dermis is the thicker inner layer of skin. The sweat glands produce sweat in response to heat and stress. The epidermis and the dermis are separated by the dermoepidermal junction. The skin is connective tissue that consists of cells, fibers and an extracellular matrix. Constitucion epidermis, dermis, hipodermis y anexos. The dermis is tightly connected to the epidermis by a basement membrane.

Beneath the dermis, lies a layer of loose connective tissue called subcutaneous tissue or the hypodermis deeper tissues including muscles, tendon, ligament, joint capsule and bone lie beneath the subcutaneous. The focus of this topic is on the epidermal and dermal layers of skin. The epidermis layer provides a barrier to infection from environmental pathogens and regulates the amount of water released from the body into the atmosphere through transepidermal water loss. Caracteristicas especificas del tejido conectivo cutaneo. The dermis is the middle layer of the three layers of skin. The epidermis is the outermost of the three layers that make up the skin, the inner layers being the dermis and hypodermis. Histologia del sistema tegumentario by victor lillo issuu.

It contains connective tissue, blood capillaries, oil and sweat glands, nerve endings, and hair follicles. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Resumen sistema tegumentario histologia monografias plus. It is divided into two layers, the superficial area adjacent to the epidermis called the papillary region and a deep thicker area known as the reticular dermis. Functional morphology of the integumentary system in fishes 481 figure 5 histological section of the skin of a juvenile chinook salmon, oncorhynchu s tshawytscha, showing the epidermis and upper. As sweat evaporates off the skin, it helps cool the body. Todas las celulas epidermicas, incluso las del estrato corneo presentan desmosomas. The epidermis presents three layers with secre tory cells, epithelial cells and a few taste buds. Enzymic and nonenzymic antioxidants in epidermis and. Difference between epidermis and dermis difference between. Glycative stress research which are responsible for dark skin color, langerhans cells, which are related to the immune function of the skin, and merkel cells, which are sensory recipient cells.

Este organo posee una estructura formada por dos capas principales. The dermis or corium is a layer of skin between the epidermis with which it makes up the cutis and subcutaneous tissues, that primarily consists of dense irregular connective tissue and cushions the body from stress and strain. Specialized sweat glands in the armpits and the genital region apocrine sweat glands secrete a thick, oily sweat that produces a characteristic body odor when the sweat. No contiene ninguna vasos sanguinea y es, por lo tanto, relacionada.

First degree only epidermis, mild pain, redness, no blisters, healing occurs within 3 to 6 days second degree partial thickness, destroys epidermis and part of the dermis, skin functions are lost, redness, blisters, edema, pain hair follicles, glands are not injured, healing in 3. Skin is part of the integumentary system and considered to be the largest organ of the human body. Pdf histologia veterinaria del sistema tegumentario. Its located between the epidermis and the subcutaneous tissue. Definicion, funcion, estructura, caracteristicas y. The epidermis is the outermost layer of the skin with a thickness of 0. This junction holds the two layers together through the help of fibers, collagen and desmosomes. This is so elastic that it prevents the two layers from separating from leach other due to the high shearing stress. The epidermis can be further subdivided into four layers, beginning with the outermost layer. Function and structure of skin and subcutaneous tissue. Bergmeyer, methods of enzymatic analysis 1974 academic press new york 673684. The epidermis is composed of multiple layers of flattened cells that overlie. Sweat is composed of water, salt, and other chemicals.