A newly developing human is typically referred to as an embryo until the ninth week after conception, when it is then referred to as a fetus. In other multicellular organisms, the word …

Apr 12, 2023 · During each week of pregnancy, your baby is growing. Here’s a look at what medical terms like embryo and fetus mean in terms of development.

Millions of babies have been born through IVF, which involves combining eggs and sperm in a laboratory to create an embryo for couples having difficulty conceiving.

Aug 13, 2023 · An embryo is a newly fertilized egg (zygote) up till the eighth week of development as it transforms through the morula, blastula, gastrula, and organogenesis stages.

Oct 5, 2025 · An embryo is the early developmental stage of an animal while it is in the egg or within the uterus of the mother. In humans the term is applied to the unborn child until the end …

embryo An organism in its earliest stages of development, especially before it has reached a stage at which it can be distinguished from other species. The human embryo is so called up …

May 21, 2024 · What is an Embryo? An embryo is an organism in the early stages of development which cannot survive on its own. The precise definition of it varies; in humans, for example, a …

Use the stage number links to images and information about each specific stage of human development over the first 8 weeks. The links below give a broad overview of developmental …

May 12, 2025 · Human embryonic and fetal development is a fascinating journey that transforms a single cell into a fully formed fetus. This diagram illustrates the key stages from fertilization to …

Aug 26, 2021 · When egg and sperm meet, a zygote is formed and quickly begins dividing to become an embryo. As pregnancy progresses, the embryo becomes a fetus. The fetus …