a domain specific word like tectonic has both literal and figurative meanings but for the most part the use of the word is found in geology and physics as you may recall earthquakes and tsunamis can be caused by tectonic shifts in which two landmasses collide
Epidermis: It is the superficial avascular layer of stratified squamous epithelium, It is ectodermal in origin and gives rise to the appendages of the skin, namely hair, nails, sweat glands and sebaceous glands.Structurally the epidermis is made up of a superficial cornified zone and a deep germinative zone.ermis: Dermis or corium is the deep, vascular layer of the skin derived from mesoderm. It is made up of connective tissue mixed with blood vessels, lymphatics and nerves. The connective tissue is arranged into a superficial papillary layer and a deep reticular layer.
Avascular necrosis is a disease resulting from the temporary or permanent loss of the blood supply to the bones. Without a blood supply, the bone tissue dies and this causes the bone to collapse.If the process involves a bone near a joint, it often leads to collapse of the joint surface.This disease also is known as osteonecrosis, aseptic necrosis, and ischemic bone necrosis.ithout a blood supply, the bone tissue dies and this causes the bone to collapse. If the process involves a bone near a joint, it often leads to collapse of the joint surface. This disease also is known as osteonecrosis, aseptic necrosis, and ischemic bone necrosis.