Which developmental stage is mismatched? a. second week—implantation b. third week—heart development begins c. fourth and fifth week—limb buds appear d. sixth through eighth week—all organ systems present e. None of these stages are mismatched.

Q: At which stage of embryogenesis, major patterns of the internal tissues of the embryo have been…

A: Embryogenesis It is defined as a process which occurs after the process of fertilization of an…

Q: Which of the following structures secretes the hormone that sustains the corpus luteum during the…

A: Corpus luteum is a temporary endocrine structure involved in ovulation and early pregnancy.  The…

Q: What a cell or tissue will normally develop into during development A. Cell Fate B. Competence C.…

A: Cells and tissues go through a number of complex processes during development that ultimately result…

Q: Observations of the developing chick embryo reveal that skeletal muscles develop from the…

A: The neural crest is often termed the fourth germ layer. It develops from the neural tube from the…

Q: For pattern formation to occur, the cells in the developing embryo must a. “know” their position…

A: The embryo formed after the fusion of the male and female gametes is the basis of the development of…

Q: Virtually all steps of embryological development depend on: a. Alterations in the genome b. Tumor…

A: Embryological development is the growth and development of embryo by  cell division and cell…

Q: During the first few weeks of pregnancy, chorionic gonadotropin substitutes for luteinizing hormone…

A: The human gonadotropin hormone is a chemical messenger that plays a crucial role in pregnancy. It…

Q: What are the pathways through which a neural tube defect can occur? Select one or more: O A. Failure…

A: The following three variables have played an important role in the assessment and prevention of…

Q: Which of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The…

A: The fusion and amalgamation of the male spermatozoa with the ovum of the female are the…

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: Which of the following statements is FALSE? a. VegT and Veg1 induce both dorsal and ventral…

A: Here, we have to select the incorrect statement regarding development.

Q: After the zygote undergoes several mitotic divisions, the resulting structure that implants in the…

A: Fertilization is the process in which gametes fuse to form a zygote. The zygote undergoes several…

Q: When does an embryo become a fetus? Select one: a. When gastrulation forms the three primary germ…

A: At the end of the 8th week after fertilization (10 weeks of pregnancy), the embryo is considered a…

Q: Which of the following extra-embyonic membranes become the embryonic portion of the structure…

A:

Q: During embryonic development 2 mammary cords appear on the surface of the ventral skin. Along these…

A: Mammary cords are structures that appear during embryonic development on the ventral skin. They…