Placenta ... a) ... develops from trophoblast cells. b) ... develops from embryoblast cells. c) ... allows the blood of the mother and fetus to be mixed

Q: Of the three polar bodies , one came from an unequal division of the ovum , but from where did the…

A: The process of the formation of the egg within the ovary is called oogenesis. This process is also…

Q: Which of the following situations is the result of epistasis? a A mouse has black fur, black eyes,…

A: All the organisms have a hereditary currency. This currency is the gene. Genes are present in the…

Q: Which of the following hormones stimulates the production of breast milk? a) Estrogen (estradiol)…

A: Estrogen stimulates increased prolactin production but inhibits prolactin's effect on the mammary…

Q: The placenta functions to Select one: a. produce blood cells b. create amniotic fluid c. provide…

A: The placenta is a large organ that consists of the blood vessel. It begins to form the blastocyst…

Q: What is the first major event that occurs during organogenesis?

A: Organogenesis is the formation and development of organs from embryonic cells or germ layers.  It…

Q: Of the three polar bodies , one came from an unequal division of the ovum , but from where did the…

A: The process of the formation of the egg within the ovary is called oogenesis. This process is also…

Q: 3. (a) What are the four processes that drive embryonic development? (b) What two processes drive…

A: Embryonic development involves the stages of development from formation of a single celled zygote…

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 point mutation in the Bone Morphogenetic Protein receptor 1B (BMPR-1B) appears to have no…

A: The Bone Morphogenetic Protein receptor 1B (BMPR-1B) is a gene that encodes a transmembrane receptor…

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: The muscular system develops from which embryonic germ layer? a ) Ectoderm B ) Mesoderm D )…

A: The muscular system is the organ system that comprises of body's muscles. These muscles get attached…

Q: he unlabeled structure (marked by the red arrow), would in fetal life (A) transport deoxygenated…

A: The liver is defined as an organ that is present in the digestive system of the body and is present…

Q: Which structure provides for exchange of materials between mother and fetus?

A: The female reproductive system is defined as a system composed of the internal and external sex…

Q: Katie was getting nervous. At 16, she was the only one in her group offriends who had not started…

A: Humans have 22 pairs of autosomal chromosomes and a pair of sex chromosomes. The sex chromosomes…

Q: What technology would enable a fetus born in the fourth month to survive in a laboratory setting?…

A: First of all, it is nearly impossible that four months (12 or 13 weeks) fetus can survive outside…

Q: 3. During the course of successful prenatal development, a human organism begins as a(n): A) Zygote…

A: The goal of developmental biology is to comprehend how an organism develops—how a single cell…

Q: In the sentence "The placenta performs an important function for the fetus," what does the word…

A: The placenta is a temporary fetal organ that begins developing from the blastocysts shortly after…

Q: The process that establishes the foundation of all major organ systems is (a) cleavage. (b)…

A: Developmental biology is about the study of embryo formation, organ and fetal development. Genes…

Q: The muscular system develops from which embryonic germ layer? a) Ectoderm B) Mesoderm D) Endoderm

A: The human muscular system is responsible for the movement of the human body. It is made up of over…

Q: The advantage of chorionic villi sampling over amniocentesis is that Chorionic villi sampling: a.…

A: CVS and amniocentesis are tests carried out during pregnancy most commonly to check your baby for…

Q: The gradual modification of anatomical structures during the period from conception to maturity is,…

A: An organism refers to a living thing, which has an organized structure, can react to grow, adapt,…

Q: la)Elene worked on a construction site for part of the time that she was pregnant with her daughter,…

A: Lead in the blood of a prenatal mom can cause the baby in the womb to born too early and it also…

Q: What technology would enable a fetus born in the fourth month to survive in a laboratory setting?…

A: A preterm baby or premature birth is the birth that occurs before 37 weeks of pregnancy. Babies born…

Q: The epiblast forms (a) only the ectoderm, (b) the yolk sac, (c) only the mesoderm and ectoderm, (d)…

A: In the second week of pregnancy, the inner cell mass of the blastula is split into two sheets of…

Q: During the first trimester, hCG produced from the chorion maintains the corpus luteum. What is the…

A: A protein hormone, HCG, starts up to generated in considerable quantities in initial pregnancy. It…

Q: which germ layer (tissue) gives rice to our nervous system and outer coverings. a) endotherm b)…

A: The mesoderm, or middle tissue, gives rise to most of the muscle and connective tissues. Finally the…

Q: Blood islands first form in the embryonic:- a. spleen. d. liver. b. yolk sac. e. red bone marrow. c.…

A: Blood Islands are structures that form around the developing embryo and which give rise to the…

Q: Which of the following type of placenta is found in humans? a) Discoidal b) Zonary c) Diffuse d)…

A: Introduction - During the pregnancy phase, the placenta is an organ that grows inside the uterus. A…

Q: The procedure in which sound waves are converted to images of the fetus is called........... a)…

A: During pregnancy the health and situation of the foetus can be monitored and the images of the baby…

Q: The opening between the two atria is found in a placental mammal fetus is called the:

A: The heart is the most vital organ of the body in biological organisms that works continuously from…

Q: During this procedure, a sample of the fluid that surrounds the fetus is obtained by inserting a…

A: The ultrasound imaging technology creates images of the body tissue by using high-frequency sound…

Q: It is currently possible to save some premature babies born as early as week (a) 8, (b) 16, (c) 22,…

A: The development of the embryo and of the fetus during the gestation period is known as prenatal…

Q: The muscular system develops from which embryonic germ layer? a ) Ectoderm B ) Mesoderm D )…

A: An embryo forms from the zygote and a zygote develops from the fusion of male and female gametes.…

Q: The muscular system develops from which embryonic germ layer? a ) Ectoderm B ) Mesoderm D )…

A: The three germ layers are the endoderm, the ectoderm, and the mesoderm. Cells in each germ layer…

Q: hich structure is the outermost extra-embryonic membrane? A ) Placenta ‘ B ) Yolk sac D ) Chorion

A: An extraembryonic membrane is one among the membranes that assist within the development of the…

Q: The primary germ layer that forms the trunk muscles, heart, and skeleton is (a) ectoderm, (b)…

A: Organogenesis is the process of formation of different organs from the three germ layers, the…

Q: What is the recommended sleeping position for infants to reduce the risk of Sudden Infant Death…

A: A seemingly healthy baby under a year old dies unexpectedly, generally during sleep, from Sudden…

Q: APGAR

A: APGAR score is a test which is performed on babies at 4 to 5 minutes  after birth. It indicates how…

Q: 299. A 3 month infant is brought to the physician because of an upper respiratory tract infection.…

A: Case summary patient is a 3 month infant with upper respiratory tract infection. Complaint of…

Q: nderstood, scientists do know that high levels of the hormone estrogen lead to the formation of r…

A: Oxytocin is a peptide hormone that is produced by the hypothalamus and stored in the posterior…

Q: Which hormone is primarily responsible for maintaining the early stages of pregnancy? A) Estrogen B)…

A: Hormones play a crucial role in the regulation and support of pregnancy. Endocrine glands release…