Chapter 4 Notes Integumentary System Biology Diagrams Skin is part of the integumentary system and considered to be the largest organ of the human body. There are three main layers of skin: the epidermis, the dermis, and the hypodermis (subcutaneous fat). The focus of this topic is on the epidermal and dermal layers of skin. Skin appendages such as sweat glands, hair follicles, and sebaceous glands are reviewed in-depth elsewhere.[1]
Skin appendages are epidermal and dermal-derived components of the skin that include hair, nails, sweat glands, and sebaceous glands. The skin, along with hair and nails, is the protective covering of the body, the skin prevents germs from entering the body and damaging the internal organs, the skin manufactures vitamin D when exposed to the sun's ultraviolet rays, and vitamin D is an
Skin Anatomy: Overview, Epidermis, Dermis Biology Diagrams
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 The skin is made of multiple layers of cells and tissues, which are held to underlying structures by connective tissue (Figure 5.1.1). The most superficial layer of the skin is the epidermis which is attached to the deeper dermis. Accessory structures, hair, glands, and nails, are found associated with the skin. Skin appendages (or adnexa of skin) are anatomical skin-associated structures that serve a particular function including sensation, contractility, lubrication and heat loss in animals.In humans, some of the more common skin appendages are hairs (sensation, heat loss, filter for breathing, protection), arrector pilli (smooth muscles that pull hairs straight), sebaceous glands (secrete sebum
The layers of the skin make up the body's largest organ, providing a crucial barrier between the internal structures and the external environment.This complex, multi-layered tissue is essential for protection, sensation, temperature regulation, and immune defense. Understanding the structure and function of the layers of the skin is key to appreciating its role in human health and physiology. The skin is the largest organ of the body, covering an area of approximately 2 m 2.The skin is composed of the cutis (including the dermis and epidermis), subcutaneous tissue, and skin appendages.The epidermis, which is derived from ectoderm, is the outermost layer of the skin and is mainly composed of keratinocytes.The dermis, which is derived from mesoderm, is located underneath the
Histology, Skin Appendages Biology Diagrams
Structure of Skin | Layers & Appendages Explained | B Pharm Quick RevisionLearn about the structure of the skin in this quick educational short! Understand t The dermis is composed of two layers, the more superficial papillary dermis and the deeper reticular dermis. Xie J, Yao B, Han Y, Huang S, Fu X. Skin appendage-derived stem cells: cell biology and potential for wound repair. Burns Trauma. 2016. 4:38. [QxMD MEDLINE Link]. .
