A normal human pregnancy lasts forty weeks, divided into 3 trimesters. Which 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 O Most organ systems are fully developed and functional The lungs develop and the head points down toward the cervix O The gender of the fetus can be determined without studying the chromosomes

Q: The maternal genome drives the first stage of embryonic development.     True     False

A: In developmental biology, embryonic development, also known as embryogenesis, is the development of…

Q: The process by which the fetus negotiates the birth canal is called the mechanism of labour Select…

A: Labor is an integral part of childbirth. A woman undergoes this process when her body is ready to…

Q: What kinds of studies and information are required to determine whether a man’s exposure to a…

A: The teratogens are the naturally occurring or chemical compounds that have the ability to produce…

Q: The development of sex and gender is a good example of a developmental cascade because:   Group of…

A: Developmental Cascade:  Developmental cascades refer to collective influences on the development of…

Q: The hormones that maintain the uterine wall during the last 5 to 6 months of pregnancy are O FSH and…

A: Various hormone levels are involved in the body in  gestation period.During the first trimester, HCG…

Q: What is the source of different cytoplasmic determinants present in the embryo after fertilization?…

A: Some post-embryonic cells also include cytoplasmic determinants, which cause cytoplasmic asymmetries…

Q: About sexual reproduction: O Involves one parent where a new individual develops being an exact copy…

A: Reproduction is a biological process that results in the production of young ones or offspring who…

Q: Which 2 of the following would indicate that a woman is in the second stage of labour? Select one or…

A: Pregnancy is the period between the time of conception to the delivery of a fully developed fetus.

Q: The placenta is formed from the embryo and the of the of the mother. O umbilical cord, oviduct O…

A: Reproduction is an important physiological process of all the living organisms. to increase their…

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: Please can you tell me about leptin and how it works at the cellular level? Where is it stored? Can…

A: Obese people have abnormally high leptin levels. Since some obese people's brains do not react to…

Q: Prevention of implantation of pre-embryonic cell to bind to endometrium is one of the mechanism to…

A: Implantation is the process by which a fertilised egg, also known as a zygote or pre-embryo,…

Q: Which of the following is not an extraembryonic membrane?a. amnionb. mesodermc. choriond. yolk sac

A: The embryo is an initial development phase of the eukaryotic organism following the egg…

Q: And where does this goes - the mother is able to feel the baby begin to move - early in this…

A: Your unborn child will develop in the first trimester from a fertilized egg into a moving fetus with…

Q: Which of the following statements concerning oogenesis is false?   Oogenesis begins before birth.…

A: Oogenesis is the process by which an ovum (egg cell) differentiates into a cell capable of…

Q: Which of the following statement about the principles of teratology is NOT true? O a. Susceptibility…

A: Teratology is the study of abnormal physiological development or congenital abnormalities. The…

Q: term female newborn has an abnormality of the abdomen. Physical examination shows a large 6-cm mass…

A: Option D is the correct option The defect is called as omphalocoele. It is caused due to…

Q: after two weeks? Select one: Oa. First Three Days After Two Weeks Endometrium Amnion Ob. First Three…

A: Answer. Histologically, the uterus consists of three layers of tissue: Perimatrium, myometrium, and…

Q: When does we consider a pregnancy full term?

A: Term is the word used to estimate the due date of pregnancy. This is divided into different levels…

Q: Which of the following is a function of hCG? O It breaks down the corpus luteum. O It helps protect…

A: hCG is the human chorionic gonadotropic hormone which is a pregnancy hormones. Tests for pregnancy…

Q: Describe the events taking place during spermatogenesis? Match the different phase of…

A: Spermatogenesis is the process of male gametes, often known as sperm, forming in the testes, the…

Q: 1st trimester: Week: 0-12 = 2nd trimester:_________? > week 12-24 > week 13-24  > week 12-26  >…

A: Note: ">" is considered as bullet points and not the greater than symbol. Reproduction is the…

Q: Why do we consider a growing child to be alive, but not a growing crystal? Is abortion the taking of…

A: The process by which human beings and other living organisms ensure the continuation of their…

Q: How does the uterus aid in fertilization? * It provides supplemental the energy for the sperm. It…

A: Fertilization is defined as the fusion of two haploid gametes i.e., spermatozoa and the oocyte…

Q: Which of the following is generated by the totipotent fertilized egg, but not by the pluripotent…

A: Stem cells are specialized cells in humans which have the capacity to develop into different cell…

Q: A previously infertile couple wishes to have a pregnancy but the man produces non-motile sperm. If…

A: The fusion of male and female gamete leads to fertilization.

Q: is it ok to take early testing of chromosome defects in pregnancy, both sides of the issue

A: First trimester screening is a blend of tests finished between weeks 11 and 13 of pregnancy. It is…

Q: what causes activation of certain genes before fertilization?

A: Fertilization is the process of fusion of male and female gametes for the formation of a zygotes.

Q: In stage 1 of labor, during active phase the cervix dilates? 4-7 cm 1-3 cm 8-10 cm 7-10 cm

A: Pregnancy refers to the development of the baby (fetus) within the mother's uterus. Pregnancy begins…

Q: Which of the following is the best description of how pregnancy most often occurs? Sperm enter the…

A: The sperm is the sex cell formed by the males in the testes. The sperm cells are formed from the…

Q: the embryonic stage, the primary germ layers develop from

A: After fertilization, the zygote is formed. The solid mass of cells known as morula is formed from it…

Q: Early Embryonic Development Match the following terms to the descriptor. NOTE: If you want to change…

A:

Q: Match the stage of gestation with the key developments that Occur during that time. Week 5-6 Week…

A: Gestation is the time period between conception and birth. During this time, the child grows and…

Q: Fertilization results when a. oocyte is released during ovulation b. the embryo begins its…

A: During sexual reproduction, there is involvement of gametes from both the sexes, that is from male…

Q: what does a "fetal development" concept map look like with 10 words or phrases?

A: Fetal development in shortest words.

Q: Which of the following is not required for internal fertilization? O sperm receptacle O behavioral…

A: The process of the formation of new organisms from the existing organisms is called reproduction. It…

Q: O destroys old blood cells. O gives rise to the yolk sac. O forms blood cells and gives rise to the…

A: The placenta is developed during pregnancy in uterus. It provides oxygen and nutrients to the…

Q: In the development of a "three-parent baby", the third parent donates which of the following?…

A: Here, first and second parent donates egg and sperm and contribute to the genetic makeup of the baby…

Q: hormone

A: The production of the hormone oxytoxin takes place in the hypothalamus and it's release takes place…

Q: The main functions of the placenta include digestion, respiration, and excretion. O True O False

A: The zygote formed after fertilization develops into a baby within the uterus for a viviparous…

Q: Which of the following is an example of cells produced by the germ line? O eye cells O fibroblasts O…

A: The germline is referred to as the sex cells that is the eggs in case of females and sperm in case…

Q: As Cleavage stage of embryo genesis proceeds, the developmental potential of the cells becomes…

A:

Q: the result of the union of human egg and sperm cell which initiates prenatal development. > embryo…

A: Embryo-In the early stage of development, the part of the life cycle that starts just after…

Q: is no mystery how harmful a lot of environmental factors can be on a fetus nor is it misunderstood…

A: There are different kinds of birth defects which can be induced in the fetus either by some genetic…

Q: Use the following information to answer the next question. Triple X Syndrome Although females with…

A: Please follow steps 2 & 3 for detailed explanation.