The ectoderm is the start of a tissue that covers the body surfaces. It emerges first and forms from the outermost of the germ layer
Germ layer
A germ layer i
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The ectoderm is the start of a tissue that covers the body surfaces. It emerges first and forms from the outermost of the germ layer
Germ layer
A germ layer is a group of cell s, formed during animal embryogenesis. Germ layers are particularly pronounced in the vertebrates; however, all animals more complex than sea sponge produce two or three primary tissue layers .... s.
Generally speaking, the ectoderm differentiates to form the nervous system
Nervous system
The nervous system is a Neural network of specialized cells that communicate information about an animal's surroundings and itself. It processes this information and causes reactions in other parts of the body.... , epidermis
Epidermis (skin)
The epidermis is the outermost layer of the skin, composed of terminally differentiated stratified squamous epithelium, acting as the body's major barrier against an inhospitable environment.... , and the outer part of integument
Integumentary system
The integumentary system is the organ system that protects the body from damage, comprising the skin and its appendages. The integumentary system has a variety of functions; it may serve to waterproof, cushion and protect the deeper tissues, excrete wastes, regulate temperature and is the location of receptors for pain, sensation, pressu... .
Vertebrates are members of the subphylum Vertebrata, chordates with Vertebras or Vertebral columns. The grouping sometimes includes the hagfish, which have no vertebrae, but are genetically quite closely related to lampreys, which do have vertebrae.... s, the ectoderm has three parts: external ectoderm (also known as surface ectoderm
Surface ectoderm
The surface ectoderm *Skin *Epithelium of the mouth and nasal cavity saliavary glands, and glands of mouth and nasal cavity*Tooth enamel - as a side note dentin and dental pulp are formed from ectomesenchyme which is derived from ectoderm ... ), the neural crest
Neural crest
The neural crest, a transient component of the ectoderm, is located in between the neural tube and the epidermis of an embryo during neural tube formation.... , and neural tube
Neural tube
In the developing vertebrate, the neural tube is the embryo's precursor to the central nervous system, which comprises the brain and spinal cord.... . The latter two are known as neuroectoderm
Neuroectoderm
Neuroectoderm is the term for ectoderm which receives inhibitory signals from proteins such as Noggin , which leads to the development of the nervous system from this tissue.... .
