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During which stage of prenatal development does the fetal period of development occur?
The fetal period of development occurs during the third stage of prenatal development, which is the fetal stage.
What is the vulnerability or prenatal development?
During prenatal development, a particular organ or body part is most vulnerable to exposure to teratogens during its:
During which stage of prenatal development does the fetal period occur?
The fetal period occurs during the third stage of prenatal development.
Is it possible to determine the health and development of a live fetus during a prenatal ultrasound examination?
Yes, it is possible to determine the health and development of a live fetus during a prenatal ultrasound examination.
When does a female fetus develop eggs during prenatal development?
A female fetus develops eggs during prenatal development while she is still in her mother's womb. This process begins around the 12th week of pregnancy.
What is the congenital condition of extreme hypothyroidism during prenatal development and childhood?
cretinism
What stage of prenatal development does implantation occur?
Implantation occurs during the blastocyst stage of prenatal development, typically around 6-10 days after fertilization. During this stage, the blastocyst embeds itself into the lining of the uterus in a process that is essential for pregnancy to continue.
During prenatal development what is the correct order in which the internal systems begin to form?
brain,spinal cord,heart and respiration
The heart begins to beat during the period of prenatal development?
18-22 days 18-22 days
What mineral is needed for the active site on actin to be exposed?
Calcium is the mineral needed for the active site on actin to be exposed. Calcium ions bind to regulatory proteins on actin filaments, causing a conformational change that exposes the active site for myosin binding during muscle contraction.
What are the key developmental milestones that occur during the transition from embryo to fetus stages in human prenatal development?
During the transition from embryo to fetus stages in human prenatal development, key milestones include the formation of major organs and body systems, the development of limbs and facial features, and the growth of the brain and nervous system. This period is crucial for the overall growth and differentiation of the developing organism.
Does embryonic development mean the same as fetal development?
No, embryonic development refers to the stage of prenatal development from fertilization to the end of the eighth week, when basic structures of the body are formed. Fetal development, on the other hand, refers to the stage from the end of the eighth week until birth, during which organs and tissues mature and grow in size.
