Question

Enumerate in a tabular form the different structures found in the epidermis and dermis of the human skin respectively.Enumerate in a tabular form the different structures found in the epidermis and dermis of the human skin respectively.

Answer 1

Layer of the skinStructure foundFunctionEpidermisKeratinocytes cellsmakes protein keratin which forms protective layer of the skin. Melanocytes cellsproduce melanin responsible for skin tone and colour. Langerhans cellsprevent foreign substances to enter the skin. The stratum corneumIt is the outer most layer of the skin which contains keratin.DermisCollagen and Elastin FibresCollagen is responsible for structural support and elastin is responsible for resilience of skin. Fibroblasts cellssynthesize collagen ,elastin and other structure molecules of the skin Blood vesselsoxygenates and nourishes the skin Lymph nodesprotect the skin from microorganisms Subaceous glands, sweat glands, hair follicles, nerves and muscle fibresproduce sebum for lubrication of the skin

Answer 2

Answer:

Epidermis Dermis

1. Stratum corneum: It is the outermost layer having layers of flattened dead cells made up of horny protein called keratin. It consists of elastic fibres, blood vessels, nerves, etc.

2. Granular layer: It is very thin middle layer having two or three sublayers of flattened cells.

3. Malpighian layer: It is the innermost region of the epidermis. The cells can actively divide to produce new cells.