Article · Wikipedia archive · Last revised May 30, 2026

Conceptus

A conceptus is an embryo and its appendages (adnexa), the associated membranes, placenta, and umbilical cord; the products of conception or, more broadly, "the product of conception at any point between fertilization and birth." The conceptus includes all structures that develop from the zygote, both embryonic and extraembryonic. It includes the embryo as well as the embryonic part of the placenta and its associated membranes: amnion, chorion, and yolk sac.

Last revised
May 30, 2026
Read time
≈ 1 min
Length
107 w
Citations
3
Source
Wikipedia ↗
Conceptus
Identifiers
TEE1.0.2.6.4.0.3
Anatomical terminology

A conceptus (from Latin: concipere, to conceive) is an embryo and its appendages (adnexa), the associated membranes, placenta, and umbilical cord; the products of conception1 or, more broadly, "the product of conception at any point between fertilization and birth."2 The conceptus includes all structures that develop from the zygote, both embryonic and extraembryonic. It includes the embryo as well as the embryonic part of the placenta and its associated membranes: amnion, chorion (gestational sac), and yolk sac.3

References

References

  1. "Conceptus". Retrieved 13 March 2022.
  2. The American Heritage Dictionary of the English Language (2011), 5th ed., p. 381.
  3. "Linked from conceptus" (PDF). Retrieved 13 March 2022.