What is the purpose of the placenta? Which part of the blastocyst eventually becomes the fetal placenta? In birds, developing chicks rely on the yolk sac to provide essential nutrients, but in humans, this is not the case. Why don’t we need it to provide nutrition? What is amniocentesis? How is it done?

Q: Describe the movement of cells during early development that change an embryo from a blastula to a…

A: To describe: The movement of cells during early development that changes an embryo from a blastula…

Q: hy is it that the first trimester of pregnancy the most critical in humans? How will you relate it…

A: It is the early phase of pregnancy. The first trimester is marked as 1st day after your last period…

Q: What are three notable features between the fertilized and unfertilized egg?

A: Sperms and eggs are the gametes produced by male and female animals respectively in sexual…

Q: Give the origins and functions of the chorion, amnion, allantois, and yolk sac.

A: The extraembryonic membrane can be defined as the type of membrane which helps in the development of…

Q: What's the role of the placenta?

A: The placenta is a vital organ that plays a crucial role in supporting the growth and development of…

Q: During pregnancy, how does malnutrition during critical periods of development affect the fetus?…

A: Nutrients are important for growth, development, and sustaining life. Based on their requirement…

Q: What are the functions of the trophoblast?

A: The embryo can be defined as the early stage of development of a multicellular organism. In general,…

Q: What are the major events that occur from fertilized egg to birth?

A: Fertilization is the process of fusion of the male gamete (sperm) with the female gamete (ovum) to…

Q: The first “milk” the mother produces is called ______________. After an egg is fertilised it is…

A: These questions are related to embryology and lactation. I will answer all three in next step along…

Q: How do the amount and distribution of cytoplasm in the fertilized egg influence early development?

A: The male reproductive system is responsible for producing and depositing sperm, while the female…

Q: what is the name of the structure where gastrulation begins in each animal below. Frog and fish has…

A: Gastrulation is the process of the formation of the child inside the womb, the complete development…

Q: How is the placenta formed? What are the embryonic and maternal parts of the placenta?

A: The temporary fetal organ that connects to the fetus via the umbilical cord and plays a role in gas,…

Q: How do the shape and structure of the uterus of the fetal pig compare with that of the human?

A: Reproductive system is used for the sexual reproduction. Female internal reproductive organs include…

Q: What are the archenteron and the blastopore? What is the stage of the embryonic development in which…

A: Gastrulation is the phase in the embryonic development of animals. During this phase, the blastula…

Q: The surface that enables active and passive exchange between the fetal and maternal bloodstreams is…

A: Answer is b.)  chorionic villi.

Q: Which embryonic germ layer lines the outer surface of the embryo

A: An embryo is the early stage of human development in which organs form critical body structures.

Q: What's the difference between ovum, primary oocyte, secondary oocyte and oogonia?

A: In the human body, the reproductive process gets initiated by the formation of male gamete(through…

Q: What will guide them to make the right decision?  Do they have a choice?

A: Answer: 1.trophobalst or icm if cells choose to become they will end up in the placenta and if they…

Q: Into which structures do the trophoblast cells of the developing embryo, differentiate?   a)   The…

A: The fusion of male and female gamete produces zygote. This process is known as fertilisation. Zygote…

Q: A full-term newborn has respiratory distress. Ultrasonography shows that the abdominal organs have…

A: The objective of the question is to identify the embryonic structure whose abnormal development…

Q: How are the development events, which you have observed to occur in the testis and ovary,…

A: The initial processes of gonads development are essentially similar in both sexes consisting of…

Q: How does the egg get from the ovary to a fallopian tube?

A: Reproduction is essential for the production of the healthy offspring and it is not necessary for…

Q: List and describe the phases of embryonic development; from a zygote through gastrulation.  What…

A: Reproduction is the process of the formation of offspring from their parents. There are two modes of…

Q: Which of the following rows correctly identifies the development of the germ layers? Select one:…

A: The germ layers are an embryonic collection of cells that aid in the creation and development of…

Q: Why are blastomeres in the pigmented part of the egg smaller and more numerous than in the…

A: The other terms associated with developmental biology include embryogenesis or embryology. This…

Q: What is the fate of the inner cell mass? Which of the structures produces human chorionic…

A: The hormones are involved in the human reproductive cycle (female): GnRH  FSH LH Estrogen…

Q: How does the mother’s circulatory system provide nutrients to the fetus without allowing the blood…

A: The foetus depends on the mother for deriving oxygen and nutrients during pregnancy.  The…

Q: What's the process of gastrulation in humans, how the embryo forms the three germ layers, and which…

A: The inner cell mass which is known as Blastula is now grown into a cell mass known  Gastrula and…

Q: The epiblast forms (a) only the ectoderm, (b) the yolk sac, (c) only the mesoderm and ectoderm, (d)…

A: In the second week of pregnancy, the inner cell mass of the blastula is split into two sheets of…

Q: A friend of yours, who is 5 months pregnant, knows you've been studying growth and development. She…

A: X ray is radiology examination of body area, were ionizing radiation are used. As of you know every…

Q: Identify two differences between a zygote and blastocyst

A: The fusion of male and female gametes is termed as fertilization. The process of fertilization takes…

Q: If Ca2+ from the egg’s endoplasmic reticulum is responsible for the cortical granule reaction and…

A: Reproduction is the process of production of own kinds.