The term "entoderm" refers to the innermost layer of cells in an embryo. In terms of spelling, "entoderm" is pronounced /ɛn.təˌdɜːm/, with the emphasis on the second syllable. The "en" at the beginning is pronounced as in "pen," while the "to" is pronounced like "toe." The final syllable, "derm," is pronounced like "derm" in "dermatology." Overall, understanding the IPA phonetic transcription of "entoderm" can help with the correct pronunciation and spelling of this important biological term.
Entoderm is a term used in biology to refer to a specific layer of cells in the developing embryo of animals. It is one of the three primary germ layers, along with ectoderm and mesoderm, that give rise to the various tissues and organs of an organism.
Entoderm is derived from the innermost layer of cells in the early embryo, called the blastula or gastrula. These cells are in direct contact with the underlying yolk or endoderm and give rise to the lining of the digestive tract, as well as certain associated organs and structures. In vertebrates, the entoderm forms the epithelial lining of the gastrointestinal tract, including the stomach, intestines, liver, pancreas, and glands within these structures.
Throughout embryonic development, the cells of the entoderm undergo various differentiation processes to form the specific tissues and organs mentioned. Due to its origin and functions, the entoderm is often referred to as the endoderm in higher organisms.
Understanding the germ layers and their derivatives, such as the entoderm, is crucial in developmental biology as it provides insight into the formation and organization of different tissues and organs. By studying the entoderm, scientists can gain a better understanding of how these structures develop and function, which has important implications in fields such as medical research and regenerative medicine.
The inner layer of cells split off from the inner cell-mass of the blastocyst, the hypoblast.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "entoderm" is derived from the Greek words "entos" meaning "within" and "derma" meaning "skin" or "layer". In medical and biological terminology, the term "entoderm" refers to the innermost layer of cells or tissue in the developing embryo, which gives rise to the lining of the digestive tract and several associated organs.