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Which of the following statements about fetal age and weight shows a normal relationship? 8 weeks - 10 gm. 12 weeks - 200 gm. 20 weeks - 800 gm. 26 weeks - 1000 gm. 38 weeks - 4600 gm.
The embryonic stage is a critical period of development. Events that occur in the embryo lay the foundation for virtually all of the body’s different cells, tissues, organs, and organ systems.
Which of the following describes the DNA content of a female’s gametes during her childhood? Choose 1 answer: 46 chromosomes, 46 chromatids. A. 46 chromosomes, 46 chromatids. 46 chromosomes, 92 chromatids. B. 46 chromosomes, 92 chromatids. 23 chromosomes, 46 chromatids. C. 23 chromosomes, 46 chromatids. 23 chromosomes, 23 chromatids. D.
Beginnings. Prenatal Development and Birth. Multiple Choice Questions. Choose the best answer. Match the following persons with the statement or theory that most closely reflects their perspective:
Learning Objectives. By the end of this section, you will be able to: Distinguish the stages of embryonic development that occur before implantation. Describe the process of implantation. List and describe four embryonic membranes. Explain gastrulation. Describe how the placenta is formed and identify its functions.
Aug 30, 2023 · Summarize the process of organogenesis. Throughout this chapter, we will express embryonic and fetal ages in terms of weeks from fertilization, commonly called conception. The period of time required for full development of a fetus in utero is referred to as gestation (gestare = “to carry” or “to bear”).
The longest known gestation period is seen in elephants, who carry their young for a whopping 22 months! The embryo develops within the womb during this period. First, stem cells in the inner cell mass of the implanted blastocyst begin to differentiate.
