Integumentary System (skin)

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The dermis is abundantly supplied with sensory nerves. Every hair follicle reacts to stimulus--whether a draft of air blowing on your arm, or feeling your sweater/clothing. The sensory nerve pathways form a complex and complete route for stimulus and response, almost instantaneously unless impaired.

Physicians and researchers distinguish between the three major subtypes of EB based on which layer of the epidermis separates from the deeper dermis layer of the skin below. Patients suspected of having EB should have a fresh blister biopsied for review

No, sebaceous glands have ducts. They are exocrine glands.

stratum basale

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Stratum basale, which is the deepest layer of the epidermis.

No, your skin will not be exposed to any danger as long as you take caution of what you are doing because somethings are very dangerous and can cause serious injuries.

Skin covers muscles, internal organs, blood vessels, and everything else inside your body.

all of the above

if you cover up your skin all the time , dirt would get trapped in between the clothes also , so would dead skin , this would cause infections and would breed dust mites , which would carry virus's, this dead skin and dirt would clog up your pours and would bury deep down and would cause skin cancer after a while.

stratum basale: youngest karatincytes made by stem cells.

Epidermis is both singular and plural

UVA

A needle would pierce the skin from the outside inward: A layer of flat cells called as Stratum corneum, then a layer of almost transparent cells called Stratum Lucidium, then a layer of cells which look granular and is called the Stratum granulosum, next is a layer of cells called the Stratum Spinosum and lastly, a single cell layer with a prominent nucleus in each cell called the Stratum basale (the growing layer).

Psoriasis is a common condition of the skin. Talk with your health care provider about what treatment is recommended given the severity of your disease.

Yes. Skin color comes from a person's amount of melanin, which is inherited genetically.

In zootomy and dermatology, skin is an organ of the integumentary system made up of a layer of tissues that guard underlying muscles and organs. As the interface with the surroundings, it plays the most important role in protecting against pathogens. Its other main functions are insulation and temperature regulation, sensation and vitamin D and B synthesis.

Skin is composed of the epidermis and the dermis. Below these layers lies the hypodermis (subcutaneous adipose layer), which is not usually classified as a layer of skin.

The outermost epidermis consists of stratified squamous epithelium with an underlying basement membrane. It contains no blood vessels, and is nourished by diffusion from the dermis. The main type of cells which make up the epidermis are keratinocytes, with melanocytes and Langerhans cells also present. The epidermis can be further subdivided into the following strata (beginning with the outermost layer): corneum, lucidum, granulosum, spinosum, basale. Cells are formed through mitosis at the innermost layers. They move up the strata changing shape and composition as they differentiate, inducing expression of new types of keratin genes. They eventually reach the corneum and become sloughed off (desquamation). This process is called keratinization and takes place within about 30 days. This layer of skin is responsible for keeping water in the body and keeping other harmful chemicals and pathogens out.

Blood capillaries are found beneath the epidermis, and are linked to an arteriole and a venule. Arterial shunt vessels may bypass the network in ears, the nose and fingertips.

The dermis lies below the epidermis and contains a number of structures including blood vessels, nerves, hair follicles, smooth muscle, glands and lymphatic tissue. It consists of loose connective tissue otherwise called areolar connective tissue - collagen, elastin and reticular fibres are present. Erector muscles, attached between the hair papilla and epidermis, can contract, resulting in the hair fibre pulled upright and consequentially goose bumps. The main cell types are fibroblasts, adipocytes (fat storage) and macrophages. Sebaceous glands are exocrine glands which produce sebum, a mixture of lipids and waxy substances: lubrication, water-proofing, softening and antibactericidal actions are among the many functions of sebum. Sweat glands open up via a duct onto the skin by a pore.

The dermis can be split into the papillary and reticular layers. The papillary layer is outermost and extends into the dermis to supply it with vessels. It is composed of loosely arranged fibers. Papillary ridges make up the lines of the hands. The reticular layer is more dense and is continuous with the hypodermis. It contains the bulk of the structures (such as sweat glands). The reticular layer is composed of irregularly arranged fibres and resists stretching.

The hypodermis is not part of the skin, and lies below the dermis. Its purpose is to attach the skin to underlying bone and muscle as well as supplying it with blood vessels and nerves. It consists of loose connective tissue and elastin. The main cell types are fibroblasts, macrophages and adipocytes (the hypodermis contains 50% of body fat). Fat serves as padding and insulation for the body.

Because they can dissolve the lipid bilayers of epidermal and dermal cell plasma membranes.

Hydrogen Peroxide. As a sufferer of Hidradenitis Supperitiva, I have been using Peroxide for 4 years now. The best part about it, is that it doesn't burn when it is wiped on an open wound. It is very safe to use.

they leave through sweat

An elephant has furry skin.