terhességnek

Terhességnek refers to the state of a female mammal carrying a developing offspring within her body. This process begins with fertilization, the union of a sperm and an egg, which typically occurs in the fallopian tube. The fertilized egg, or zygote, then travels to the uterus and implants itself in the uterine wall, marking the beginning of pregnancy.

During pregnancy, the developing organism, known as an embryo and later a fetus, undergoes significant growth and differentiation. The mother's body undergoes numerous physiological changes to support the developing fetus, including hormonal shifts, increased blood volume, and changes in metabolism. The duration of pregnancy varies greatly among species, with humans typically carrying a fetus for approximately 40 weeks.

Pregnancy is generally divided into three trimesters. The first trimester is characterized by rapid cell division and the formation of major organs. The second trimester sees substantial fetal growth and the development of distinct physical features. In the third trimester, the fetus continues to mature, gaining weight and preparing for birth.

The successful conclusion of pregnancy is childbirth, the process by which the fetus is expelled from the mother's body. This can occur naturally or through medical intervention. Pregnancy is a complex biological process essential for the continuation of species, involving intricate interactions between the mother and the developing offspring.