Unit 4 Topic 1 Online Lab: Human Embryo Development
13 Days Post-ovulation: The placenta is formed, along with the stalk, which will later develop into the umbilical cord. This is important because the placenta and umbilical cord is hoe the developing embryo will receive nutrients from the mother.
4 weeks: this is when all of the internal organs begin to develop, this is important because this is a time in the pregnancy when the baby is very venerable to anything that might interfere with development, like alcohol.
5 Weeks: the embryos heart and circulatory system begin to form. This is important because it is also when the heart begins to pump blood.
7 Weeks: hands and feet are emerging from developing arms and legs. A loop in the baby's growing intestines is bulging into the umbilical cord, which now has distinct blood vessels to carry oxygen and nutrients to and from its body.
9 Weeks: All of the essential body parts are accounted for, but they will continue to fully develop throughout the pregnancy. The placenta is developed enough now to produce hormones. These events are important because if all organs do not develop or there are no hormones to regulate the body there will be lots of problems when the baby is born.
12 Weeks: the reflexes develop and the intestines, which have grown so fast that they protrude into the umbilical cord, will start to move into the abdominal cavity. The kidneys will begin excreting urine into the bladder. These developments are important because reflexes are needed to protect the body from heat or dangerous situations. The kidneys are needed to excrete the metabolic wastes of the body.
16 Weeks: Some of the more advanced body systems are working, including the circulatory system and urinary tract. The heart is now pumping about 25 quarts of blood each day, circulating the total blood volume through the body many times.
19 Weeks: This is a crucial time for sensory development: the brain is designating specialized areas for smell, taste, hearing, vision, and touch.
35 Weeks: The kidneys are fully developed now, and the liver can process some waste products. Most of the basic physical development is now complete. Kidney development is important because they also assist the endocrine system in hormone secretion and they maintain the appropriate water-salt balance in the blood.
37 Weeks: The lungs have fully developed by this time in the pregnancy. This is important because if the lungs are not fully developed when the baby is born there could be many complications that would keep the baby in the hospital and may also have long term effects like asthma.
13 Days Post-ovulation: The placenta is formed, along with the stalk, which will later develop into the umbilical cord. This is important because the placenta and umbilical cord is hoe the developing embryo will receive nutrients from the mother.
4 weeks: this is when all of the internal organs begin to develop, this is important because this is a time in the pregnancy when the baby is very venerable to anything that might interfere with development, like alcohol.
5 Weeks: the embryos heart and circulatory system begin to form. This is important because it is also when the heart begins to pump blood.
7 Weeks: hands and feet are emerging from developing arms and legs. A loop in the baby's growing intestines is bulging into the umbilical cord, which now has distinct blood vessels to carry oxygen and nutrients to and from its body.
9 Weeks: All of the essential body parts are accounted for, but they will continue to fully develop throughout the pregnancy. The placenta is developed enough now to produce hormones. These events are important because if all organs do not develop or there are no hormones to regulate the body there will be lots of problems when the baby is born.
12 Weeks: the reflexes develop and the intestines, which have grown so fast that they protrude into the umbilical cord, will start to move into the abdominal cavity. The kidneys will begin excreting urine into the bladder. These developments are important because reflexes are needed to protect the body from heat or dangerous situations. The kidneys are needed to excrete the metabolic wastes of the body.
16 Weeks: Some of the more advanced body systems are working, including the circulatory system and urinary tract. The heart is now pumping about 25 quarts of blood each day, circulating the total blood volume through the body many times.
19 Weeks: This is a crucial time for sensory development: the brain is designating specialized areas for smell, taste, hearing, vision, and touch.
35 Weeks: The kidneys are fully developed now, and the liver can process some waste products. Most of the basic physical development is now complete. Kidney development is important because they also assist the endocrine system in hormone secretion and they maintain the appropriate water-salt balance in the blood.
37 Weeks: The lungs have fully developed by this time in the pregnancy. This is important because if the lungs are not fully developed when the baby is born there could be many complications that would keep the baby in the hospital and may also have long term effects like asthma.
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