Epidermis vs. Ectoderm — What's the Difference?

The epidermis is the outermost of the three layers that make up the skin, the inner layers being the dermis and hypodermis. The epidermis layer provides a barrier to infection from environmental pathogens and regulates the amount of water released from the body into the atmosphere through transepidermal water loss.The epidermis is composed of multiple layers of flattened cells that overlie a base layer (stratum basale) composed of columnar cells arranged perpendicularly.

The ectoderm is one of the three primary germ layers formed in early embryonic development. It is the outermost layer, and is superficial to the mesoderm (the middle layer) and endoderm (the innermost layer).

The outer, protective, nonvascular layer of the skin of vertebrates, covering the dermis.

The outermost of the three primary germ layers of an embryo, from which the epidermis, nervous tissue, and, in vertebrates, sense organs develop.

An integument or outer layer of various invertebrates.

The outer layer of a diploblastic animal, such as a jellyfish.

The outermost layer of cells covering the leaves and young parts of a plant.

(biology) Outermost of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the epidermis (skin) and nervous system of the adult.

The outer, protective layer of the skin of vertebrates, covering the dermis

The outer layer of the blastoderm; epiblast.

The similar outer layer of cells in invertebrates and plants

The outer germ layer that develops into skin and nervous tissue

The outer, nonsensitive layer of the skin; cuticle; scarfskin. See Dermis.

The outermost layer of the cells, which covers both surfaces of leaves, and also the surface of stems, when they are first formed. As stems grow old this layer is lost, and never replaced.

The outer layer of the skin covering the exterior body surface of vertebrates