The human gestation period consists of three trimesters of 1 month each. two trimesters of 1 month each. two trimesters of 2 months each. fertilization and one trimester. three trimesters of 3 months each.
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The first option is three trimesters of 1 month each, which is 3 months. The second option is two trimesters of 1 month each, which is 2 months. The third option is two trimesters of 2 months each, which is 4 months. Show more…
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A normal human pregnancy lasts forty weeks, divided into three trimesters. What is a key event during the first trimester of pregnancy? The embryo is forming all its major structures and is most sensitive to alcohol and drugs. Most organ systems are fully developed and functional. The lungs develop, and the head points down toward the cervix. The gender of the fetus can be determined without studying the chromosomes.
Adi S.
Describe the major developments during each trimester of human gestation.
Birth Breasts Conceptus Embryo Fertilized egg Fetus Gestation period Millions Pregnancy Puberty Testosterone Thousands Trillions 365 280 Instructions: Fill in the blanks below from the word bank provided (Not all words will be used). The birth of a baby begins with a single cell, the ________ and ends with formation a highly complex human being consisting of ________ of cells. ________ refers to events that occur from the time an egg is fertilized until birth. The developing baby is called a ________. The time the mother carries the baby while it is developing is known as the ________ period which lasts approximately ________ days. During the embryonic period, from fertilization through week eight, the conceptus is called a(an) ________. During weeks nine through birth the conceptus is called a (an) ________.
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