The study of embryology or the study of the unborn provides amazing clues which can be used to master the study of anatomy. Get ready to master gross anatomy.
What Is Embryology?
(Greek, en = in + bryein = to be full of) Embryology is the science of studying embryo development, which is usually applied to all development before birth (in humans, included both the embryonic and fetal period).
- (Greek, en = in + bryein = to be full of)
- An egg that has been fertilized by a sperm and undergone one or more divisions. Also the set of early developmental stages in which a plant or animal differs from its mature form.
- (inner cell mass, Greek, en = in + bryein = to be full of and -blast, a primordial cell)
- The cellular mass component of the blastocyst that will give rise to the embryo. The remainder of cells that form the wall are the trophoblast cells.
Embryonic Cell Cycle
- Term describing the rapid rounds of mitosis occurring in early development following fertilisation. Cells alternate between mitosis and duplication of DNA without intervening growth periods (M, S, M phases) compared to the normal adult cell cycle that includes growth periods between each of these phases (M, G1, S, G2, M phase). Each round of cell division results in cells smaller in cytoplasm size that divide again before growth occurs.