Examples of epidermis

• Below the epidermis lies the dermis. 

• Skin is made up of three layers: the epidermis, the dermis, and the subcutis. 

• The epidermis, the outer layer, includes dead skin cells that are constantly falling away and being replaced. 

• These help control our body’s temperature by sending a water-rich liquid – sweat – up to the epidermis. 

• Examine the epidermis on the back of the hand and palm. 

• Scales small, and concealed in a thick epidermis. 

• The epidermis may be very easily removed, and is perfectly colorless. 

• The epidermis, which is thin and shiny, gives way, and the nail is usually shed. 

• They are covered externally by the epidermis. 

• These geometrically regular cells of hypodermis strongly contrasted the epidermis, composed of smaller cells with sinusoidal anticlinal walls.

• The testa epidermis is peculiar in that the outer walls of dry seeds are invaginated, while they bulge outwards in wetted seeds.

• Except immediately beneath the epidermal scales, ribosomes are not generally found within the outer epidermis.

• In general, the outer surface of the epidermis is relatively smooth, although in certain places it may be highly folded.

• There is a diffuse lymphocytic infiltrate in the epidermis extending into the dermis.

• There are no subsidiary cells, and the guard cells appear level with the rest of the epidermis.

• The axis cells are alive, except a part of the epidermis, which is magnified in the inset (cell walls highlighted).

• As seedling growth proceeds, lipoxygenases become confined to cells surrounding the vascular bundle, to the epidermis and to the hypodermis.

• The basement membrane is a zone of 0.1 mm thickness that connects the epidermis to the dermis.

• Structurally, the skin consists of epidermis, dermis and basement membrane zone.

• Accelerated melanin transfer to keratinocytes then results in a large increase in melanin granules in the epidermis.

• Accelerated melanin transfer to keratinocytes then results in a large increase in melanin granules in the epidermis (fig005hah).

• This relationship in stomatal density between lower and upper epidermis also held true for shade plants.

• Such preparations are difficult to study pharmacologically because the tegument or epidermis restricts access of drugs to the muscles.

• Thus, bulge stem cells are multipotent and can give rise to epidermis, hair follicle and sebaceous gland lineages.