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Human gestation is fascinating, but can be difficult to describe to patients and expectant moms. With this collection of detailed anatomical models, it becomes much simpler to educate patients and students about the stages of pregnancy and fetal growth, beginning with 1 st month and progressing through several stages.
A developing human is referred to as an embryo during weeks 3–8, and a fetus from the ninth week of gestation until birth. In this section, we’ll cover the pre-embryonic and embryonic stages of development, which are characterized by cell division, migration, and differentiation.
26 lip 2023 · During the fetal period, differentiation and growth of the tissues and organs formed during the embryonic period occur. The anatomical changes are more gross; for example, the placenta and the umbilical cord clearly marks the connection between the developing fetus and the mother.
Briefly describe the process of sexual differentiation. Describe the fetal circulatory system and explain the role of the shunts. Trace the development of a fetus from the end of the embryonic period to birth. As you will recall, a developing human is called a fetus from the ninth week of gestation until birth.
10 sie 2023 · Steps and processes. Gastrulation begins when a linear region of cells of the epiblast layer become thicker at the caudal aspect of the embryo. This primitive (Spemann’s) streak develops as epiblast cells replicate and migrate to the midline of the bilaminar disc under the influence of nodal.
A developing human is referred to as an embryo during weeks 3–8, and a fetus from the ninth week of gestation until birth. In this section, we’ll cover the pre-embryonic and embryonic stages of development.
Use this interactive prenatal timeline to learn about the stages of pregnancy from conception to birth. This versatile tool features movies, images, facts, and even quiz questions.
