Human conceptus growing in the uterus usually called a fetus from the seventh or eighth week of pregnancy.
The developing young in the uterus after the second month pregnancy.
The fertilized egg from the end of the embryonic period through birth.
An unborn baby from two months after conception until birth, before which it is called an embryo.
An unborn child; stage of development of a human from embryo to birth, or from about 12 weeks post fertilization to full gestational age (approximately 40 weeks).
The being developing in the mother’s uterus, from the eighth week through birth (earlier known as an embryo); literally “offspring” or “little one.” The fetus floats in protective amniotic fluid and is nourished by the placenta, to which it is connected by the umbilical cord. In the eighth week, on the average, the fetus is only about 1 to 1½ inches long and weighs about two-thirds of an ounce, but by the 40th week, at full- term, the baby that is born more likely measures 20 inches and weighs on the average about Th pounds.
Live offspring while it is inside the mother (in utero); in humans, from the beginning of the third month of pregnancy until birth.
The product of conception, from the eighth week of pregnancy until birth. Before the eighth week, the fertilized egg is considered an embryo. A fetus in the eighth week is about 1 inch long. The fetus will grow rapidly and be ready to be born at about 40 weeks after conception.
A mammalian embryo during the later stages of development within the womb. In man it refers to the products of conception from the beginning of the third month of pregnancy until birth.
The name given to the unborn child after the eighth week of development. Humans, like all animals, begin as a single cell, the ovum, in the ovary. After fertilization with a spermatozoon, the ovum becomes embedded in the mucous membrane of the uterus, its covering being known as the decidua. The original cell divides repeatedly to form new cells, and these become arranged in three layers known as the ectoderm, mesoderm and endoderm. The first produces the skin, brain and spinal cord, and the nerves; the second the bones, muscles, blood vessels and connective tissues; while the third develops into the lining of the digestive system and the various glands attached to it.
The latter stages of the developing young of an animal within the uterus or within an egg.
Developing human, from the start of the ninth week of pregnancy until delivery.
Name given to the developing embryo from the end of the second month of pregnancy until birth.
The term used to denote an unborn baby after the eighth week of pregnancy is “fetus.” Prior to reaching seven weeks of development, it is referred to as an “embryo.”
The unborn child, from the completion of the eighth week after conception until birth, is commonly referred to as a fetus. Prior to that, during the initial eight weeks, it is called an embryo.
During development, the fetus grows inside the mother’s uterus within a protective sac filled with amniotic fluid, which acts as a cushion against any potential injuries. The necessary oxygen and nutrients for the fetus are provided through the placenta. This organ is firmly attached to the inner wall of the uterus and connected to the fetus by the umbilical cord. The placenta serves as a vital link between the mother and the growing baby, ensuring essential substances are transported from the mother to the fetus for its healthy development.
The developing baby from the second month of pregnancy onward.