This final stage of development is called the fetal period of development. This stage takes place from the end of the embryonic period until the time of birth (or the 10th to 40th weeks of pregnancy). The most notable development during this stage is the dramatic change in size that takes place.
The fetal stage officially begins after the tenth week of pregnancy. Prior to this, the developing child is considered an embryo. Before the tenth week is reached, many physiological developments have already happened.
Conception is also the beginning of the germinal period of prenatal development. This stage occurs during the first 2 weeks of development (or the 2nd - 4th weeks of pregnancy).
Between weeks 13-16, the fetus begins to move, which means the muscles are developing. The skeleton of the fetus is, at this point, primarily cartilage, or soft connective tissue, but may also contain some hardened bone.
approximately 30 weeksDefining the Fetal Stage A fetus is a prenatal human being between the embryonic stage and birth. The fetal stage extends from the beginning of the ninth week after fertilization to about 38 weeks after fertilization, which is the average time of birth. The fetal stage lasts a total of approximately 30 weeks.
How long does the Fetal period last? 29 weeks.
• Period from the beginning of ninth week to birth. • Embryo develops into a recognizable human being.
The embryo grows rapidly, and the baby's external features begin to form. Your baby's brain, spinal cord, and heart begin to develop. Baby's gastrointestinal tract starts to form. It is during this time in the first trimester that the baby is most at risk for damage from things that may cause birth defects.
Week 9 is generally regarded as the start of the fetal period. The fetal period is primarily for growth and maturation of tissues and organs in the fetus.
The first two weeks of prenatal development are called the fetal period. At the end of the embryonic period, the embryo has all of the basic organs and body parts (except sex organs) of a human being. Teratogens increase the risk of harm but do not always cause damage. Genes can influence the effects of teratogens.
The four stages of embryonic development are morula, blastula, gastrula and organogenesis.
Prenatal development is the process in which an embryo or fetus (or fetus) gestates during pregnancy. Normal prenatal development lasts about 38 weeks and is divided into three stages: germinal, embryonic, and fetal.
Zygotes divide through a process known as mitosis, in which each cell doubles (one cell becomes two, two becomes four, and so on). This two-week stage is known as the germinal period of development and covers the time of fertilization (also called conception) to the implantation of the blastocyst in the uterus.
The sperm and uterus work together to move the sperm towards the fallopian tubes. If an egg is moving through your fallopian tubes at the same time, the sperm and egg can join together. The sperm has up to six days to join with an egg before it dies. When a sperm cell joins with an egg, it's called fertilization.
Which of the following occurs 9-12 weeks into pregnancy, during the fetal period? Quickening occurs.