The feature that distinguishes a fetus from an embryo is that the fetus has a. All of the organ systems. b. Three germ layers. c. A placenta. d. An amnion. e. Arm and leg buds.

Q: The seven-day blastocyst: A. has a single layer of trophoblast at the embryonic pole B. has an…

A: The correct option is C.

Q: If human fetus were exposed to very low levels of both testosterone and estrogen during prenatal…

A: People with both male and female anatomy and mixed characteristics are called as intersexes. The…

Q: The first week of human development is characterized by formation of the: A. inner cell mass B.…

A: The correct option is E - all of the above

Q: The umbilical cord connects the developing fetus to thea. mother’s belly button.b. placenta.c.…

A: Reproduction is the process by which an organism creates more of its own progeny. During…

Q: Describe how the human blastocyst gives rise to the embryo and its extraembryonic membranes.

A: The fusion of male and female gametes form a zygote during fertilization.

Q: Nutrient and waste requirements for the developing fetus are handled during the first few weeks by:…

A: Endometrium is the innermost lining of the uterus which undergoes cyclic changes during…

Q: The surface that enables active and passive exchange between the fetal and maternal bloodstreams is…

A: Answer is b.)  chorionic villi.

Q: Which of the following consists of both fetal and maternal tissues? (a)umbilical cord (b) placenta…

A: The unborn offspring that is known to develop from an embryo is called the fetus. The overall…

Q: Which of the following is required for successful fetal development after the egg has been…

A: When sperm successfully enters and fuses with the ovum fertilization occurs. This genetic material…

Q: Define amniocentesis

A: During pregnancy, several procedures and tests are done by medical practitioners. These tests help…

Q: Which developmental stage is mismatched? a. second week—implantation b. third week—heart development…

A: Option D is mis Matched

Q: What would happen if the trophoblast did not secrete hCG upon implantation of the blastocyst? a. The…

A: Implantation is the process that signals that the pre-embryonic development stage is completed. This…

Q: What part of the blastocyst develops into the embryo?a. Yolk sacb. Placentac. Polar bodyd. Inner…

A: The time taken for the complete development of the fetus inside the uterus is known as the…

Q: During which of the following would the focus of classes be mainly on physiologic changes, fetal…

A: Pregnancy includes many physiological changes due to hormonal changes in response to fetal…

Q: At what stage uteroplacental circulation started?  a.Maternal blood entering the lacunar  b.Embryo…

A: The uteroplacental circulation is a circulatory framework where two circulation systems, the fetal…

Q: Describe the features and process of a fetus embryo at 10 weeks of pregnancy

A: Within twenty-four hours once fertilization, the egg that may become your baby quickly divides into…

Q: ________________________is the period of development from fertilization to birth, whereas is the…

A: Gestation is considered as the period between conception ( or certification) and birth when the baby…

Q: . The structure labeled C, within which development occurs, is known as the a. placenta. b. oviduct…

A: The picture is showing the foetus in the womb of mother.

Q: What event occurs in the second stage of Labour? Answers A E A expulsion of fetal membrane B Relaxed…

A: Normal Labor:  Labor is series of events by which product of conception expelled out to outer world.…

Q: The myometrium is the muscular layer of the uterus, and the endometrium is the (a) serosa, (b)…

A: The uterus is the pear-shaped organ that belongs to the female reproductive system, and is located…

Q: Identify two differences between a zygote and blastocyst

A: The fusion of male and female gametes is termed as fertilization. The process of fertilization takes…

Q: Discuss the adaptations of a woman’s body to pregnancy?

A: Gestation or the pregnancy is the period during which offspring develop within a woman. In humans,…

Q: . At what point during a pregnancy does this organ or system begin to develop, function, and become…

A: Note: Since you have asked multiple question, we will solve first question for you. If you want any…

Q: In human embryogenesis, how many hours does it take after fertilization to form the following; a.…

A: Embryogenesis  Embryogenesis refers to the stages of developing embryo. The embryogenesis start just…

Q: Which of the following statements is not true about the placenta?  A. It provides exchange of wastes…

A: During pregnancy, inside the uterus, the organ placenta develops. It is found attached to the wall…

Q: Chemicals that pass through the placenta’s screen and mayharm an embryo or fetus are called…

A: The common chromosomal abnormality that occurs due to a missing or extra chromosome number is called…

Q: In human development, an embryo is most sensitive to chemicals, radiation, and pathogens during the…

A: Need to find the best option from the given four options related to embryo.

Q: During oogenesis the cell that is fertilized by a sperm to become an egg is:    A primary…

A: Oogenesis is the process of 'oocyte development 'in females. The resulting cell is called gamete…

Q: Placenta is the structure formed: A. by the union of foetal and uterine tissue B. by foetus…

A: The uterus or womb is a hollow muscular organ which is located in the pelvis of female between the…

Q: The placenta is formed from ________.a. the embryo’s mesenchymal cellsb. the mother’s endometrium…

A: Placenta is defined as the organ that develops in the uterus of the women during pregnancy. The…

Q: Which row correctly identifies the function and a source of hCG, respectively? Select one:

A: Placenta is a structural and functional unit between developing embryo and maternal body .It is a…

Q: where should first learn the knowledge of early pregnancy?why it is important for society to know…

A: Women below the age group of 20 becoming pregnant imposes significant societal and economic effects.…

Q: Describe the structure and functions of the four extraembryonic membranes

A: The layers inside the egg around the embryo are called extraembryonic membranes, and they nourish…

Q: Explain the origins of the blastocyst cavity and what purpose does it serve?

A: The blastocyst is formed just after 5 days of fertilization.  It is composed of inner cell mass…

Q: Which of the following represents a common metabolic or physiological change that occurs in…

A: Here we have to find out the option which indicates a common metabolic or physiological change that…

Q: Which organ is much larger in the fetus than it is shortly after birth? O 1. kidneys 2. heart 3.…

A: The development of organ during the period of pregnancy is called organogenesis. From about 9 to 12…

Q: Explain the main features of embryonic and foetal development.

A: Within twenty hours after the fertilization, the zygote starts to divide rapidly into many cells.…

Q: The uterus rises out of the pelvis and becomes an abdominal organ about the:  a. Eighteenth weeks of…

A: Uterus is present in female, it's a hollow organ located between rectum and bladder.

Q: Describe the process of neuralation.  b) Identify the germ layer from which the nervous system…

A: The time amid conception and birth is known as gestation. The baby develops and grows within the…

Q: The birth starts thanks to increased ...

A: The correct option is B . Release of Oxytocin

Q: Describe the roles of the four extraembryonic membranes.

A: Introduction :- One of the membranes that aid in the development of the embryo is the extraembryonic…

Q: The fetal period is (a) from weeks 9–38, (b) the time of rapid growth of body organs, (c) a time of…

A: Introduction  The usual gestation period in human females lasts for about 40 weeks which is…

Q: a) The names of three germ layers are 1) Ectoderm 2) Mesoderm and 3) Ectoderm (Describe relative…

A: During embryonic development, a germ layer is a fundamental layer of cells that arises. The endoderm…