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Definitions from WordNet

Definitions from the Web

Germ Layer

Definition:

A germ layer refers to one of the three primary layers of cells that form during the early stages of embryonic development in animals. These layers eventually give rise to different tissues and organs in the body.

Senses:

1. Anatomy: Any of the three primary layers of cells in an embryo, namely ectoderm, mesoderm, and endoderm.

Sample Sentences:

1. The formation of germ layers marks the beginning of organ development in embryos.
2. During gastrulation, the blastula differentiates into ectoderm, mesoderm, and endoderm—the three germ layers.
3. The ectoderm, as a germ layer, ultimately gives rise to the nervous system and epidermis.

Possible Related Products:

• Embryology Textbook
• Developmental Biology Book