The term "amniotic cavity" refers to the fluid-filled sac in which a developing fetus is enclosed in the womb. This word can be spelled using IPA phonetic transcription as /æmniˈɑtɪk ˈkævəti/. The first syllable is pronounced with the short "a" sound, followed by the "m" and "n" sounds. The second syllable is pronounced with a long "o" sound, followed by the consonants "t" and "ɪk." The final syllable is pronounced with a short "a" sound, followed by the "v" and "ti" sounds.
The amniotic cavity refers to a fluid-filled space or sac that forms during embryonic development. It is a vital component of the amniotic membrane - a protective structure that encloses and supports the developing fetus in many vertebrates, including reptiles, birds, and mammals.
During the early stages of embryogenesis, as the fertilized egg divides and grows, a cavity called the amniotic cavity forms within the developing embryo. This cavity is lined by a thin, specialized membrane known as the amnion, which later fuses with the chorion to form the complete amniotic sac.
The amniotic cavity is filled with amniotic fluid, a clear liquid that serves multiple essential functions. Firstly, it cushions and protects the developing embryo or fetus against mechanical shocks and trauma, acting as a shock absorber. Secondly, the amniotic fluid provides a stable and regulated environment for the fetus, maintaining a constant temperature and pressure. It also allows for proper lung development, as the fetus can practice breathing movements and swallow small amounts of the fluid, facilitating the growth and maturation of the respiratory system.
The amniotic cavity plays a crucial role in supporting and nurturing the growing embryo or fetus throughout the duration of pregnancy. It provides a safe and suitable environment for the developing offspring, contributing to their overall well-being and healthy development.
The space enclosed by the amnion, especially that between the amniotic sac and the embryo.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "amniotic" is derived from the Greek word "amnios", which refers to the inner membrane surrounding the fetus in the womb. The term "cavity" comes from the Latin word "cavitas", meaning hollow space or empty area. Thus, "amniotic cavity" refers to the fluid-filled space created by the amnion, where the developing embryo or fetus is enclosed during pregnancy.