There are two major parts to what we call the skin. The epidermis and the dermis.
The dermis is a blood rich layer that contains a number of cells including the ones that produce pigment, keratinized epithelium (hair follicles), glandular epithelium (sweat, sebaceous glands), dense irregular connective tissue (collagen), smooth muscle tissue (arrector pili muscles), nervous tissue (Meissner's & Pacinian Corpuscles), and blood vessels.
The epidermis is a layer whose cells become more and more filled with keratin and begin to die as they reach the surface.
There is layer underneath called the hypodermis which contains fatty tissue but it is not part of the skin.
The skin's three main regions from deep to superficial are the hypodermis, the dermis, and the epidermis. The epidermis is the visible layer of the skin.
Dermis and the Epidermis
Epidermis, dermis, hypodermis
dermis and epidermis
There are six major regions in North America
their are over thousands of religions in china!
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rmis
Formal regions are areas defined by boundaries such as political or administrative divisions, while functional regions are based on a specific function or activity that ties the area together, like a transportation network or economic system. Formal regions have clear boundaries, while functional regions are more about the connections and interactions within the area.
The major regions are the coastlines, the wetlands, and the evrgreens.
For a list of the major desert regions of the world click on this link.
There are very many regions in the world. it depends which area of the world you have in mind.