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Apr 24, 2023 · The skin appendages are epidermal and dermal-derived components of the skin that include hair, nails, sweat glands, and sebaceous glands. Each component has a unique structure, function, and histology. This article describes the unique characteristics of each of these components and provides insight into tissue preparation for microscopic evaluation and the clinical significance of these ...
- Hani Yousef, Julia H. Miao, Mandy Alhajj, Talel Badri
- 2023/04/24
- 2020
- Skin Appendages Function
- Hair
- Nail
- Sebaceous Glands
- Sweat Glands
Skin appendages are structures embedded within or projecting from the skin that perform various important functions. They play an important role in keeping our skin healthy and functioning properly. These include: 1. Hair: Hair helps to insulate the body, protects the scalp from sunlight, and provides sensory input. It also traps sweat and dirt, he...
Hairs are horny threads varying in length, thickness, color, and distribution according to the race, sex, and site of skin.
Nails are horny plates present on the dorsal surfaces of the terminal phalanges of fingers and toes, they consist of closely-packed hard keratin scales.
These are simple branched alveolar, holocrine glands that develop from the upper third of the hair follicle; therefore, they are usually present where the hair is present. They are most numerous over the head region and the anogenital area.
They are simple coiled tubular glands, they are found deep in the dermis or the hypodermis, there are two types of sweat glands; the eccrine and the apocrine glands.
Jul 31, 2023 · The skin contains several glands, hair, nails and nerve endings that allow it to function optimally. This article will discuss the embryology, gross anatomical and histological features of the appendages of the skin. Additionally, pathologies that affect the appendages and their consequences will also be discussed.
Sep 16, 2024 · Concept Review. Accessory structures of the skin include hair, nails, sweat glands, and sebaceous glands. Hair is made of dead keratinized cells, and gets its color from melanin pigments. Nails, also made of dead keratinized cells, protect the extremities of our fingers and toes from mechanical damage. Sweat glands and sebaceous glands produce ...
Sep 5, 2024 · Fibroblasts – these cells synthesise the extracellular matrix, which is predominantly composed of collagen and elastin. Mast cells – these are histamine granule-containing cells of the innate immune system. Blood vessels and cutaneous sensory nerves; Skin appendages – e.g. hair follicles, nails, sebaceous and sweat glands. Although ...
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Feb 24, 2020 · The epidermal layer, in addition to keratinocytes, contains melanocytes (gray), dendritic Langerhans cells (orange), and sensory Merkel cells (green) that connect to nerve endings (purple). The skin is a sensory organ, enabling us to engage with our environments — detecting touch, itch, and responding to pain.
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Oct 7, 2021 · Skin and its appendages including hair, nails, sweat glands, and sebaceous glands construct the integumentary system. In human, skin is the largest organ of the body and functions as the first defense line against the external environment. It constitutes about 15–20% of the body weight with a surface area less than 1.5 m 2 (Ita 2015).
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