ectoderm


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Related to ectoderm: mesoderm

ec·to·derm

 (ĕk′tə-dûrm′)
n.
1. The outermost of the three primary germ layers of an embryo, from which the epidermis, nervous tissue, and, in vertebrates, sense organs develop.
2. The outer layer of a diploblastic animal, such as a jellyfish.

ec′to·der′mal, ec′to·der′mic adj.

ectoderm

(ˈɛktəʊˌdɜːm) or

exoderm

n
(Biology) the outer germ layer of an animal embryo, which gives rise to epidermis and nervous tissue. See also mesoderm, endoderm
ˌectoˈdermal, ˌectoˈdermic adj

ec•to•derm

(ˈɛk təˌdɜrm)

n.
the outer germ layer in the embryo of a metazoan.
[1860–65]
ec`to•der′mal, ec`to•der′mic, adj.
ec`to•der•moi′dal (-dərˈmɔɪd l) adj.

ectoderm

An embryo’s outer germ layer, which develops into structures including the brain and skin. See endoderm,mesoderm
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ectoderm - the outer germ layer that develops into skin and nervous tissueectoderm - the outer germ layer that develops into skin and nervous tissue
germ layer - (embryology) any of the 3 layers of cells differentiated in embryos following gastrulation
neural tube - a tube of ectodermal tissue in the embryo from which the brain and spinal cord develop
Translations

ec·to·derm

n. ectodermo, la capa más externa del embrión.
References in periodicals archive ?
Only cells of the inner cell mass (ICM) from blastocyst have the pluripotent capacity for formation of all three primary germ layers, endoderm, mesoderm, and ectoderm.
Objective: Mesoderm, the embryonic germ layer between ectoderm and endoderm, gives rise to major organs within the circulatory and excretory systems and to stabilizing tissues (muscles, bones, connective tissue).
Rodriguez-Leyva said, because neurons and epidermal cells arise from the same fetal lamina--the ectoderm.
EDI200 has been shown to bind specifically to the EDA-A1 receptor (EDAR), activating the signaling pathways that lead to normal ectoderm development.
Dermoid cysts are mature cystic teratomas that may have components from 3 germ-cell layers that predominantly include mature ectoderm elements.
Experimental observations on the development of ectoderm free mesoderm of the limb bud in chick embryos.
After closure, the neuro-ectoderm separates from the cutaneous ectoderm (dysjunction), and the space between is filled by mesoderm.
PNETs are small round cell tumours that arise from cells of the primitive ectoderm and comprise 1% of all sarcomas.
The foregut and hindgut arise from the ectoderm, while the midgut arises from the endoderm (Cruz-Landim 1985; Chapman 1998).
2001), was repressed under all conditions tested, indicating that cells of ectoderm lineage were not present in the beating or nonbeating nodes selected.
Also, more in reference to fetal embryology, the skin, or epidermis, originates from the same ectoderm as the central nervous system.