At what stage uteroplacental circulation started?  a.Maternal blood entering the lacunar  b.Embryo completely embedded  c.Formation of extraembryonic mesoderm d.Formation of lacunar

Q: Where in the female body does fertilization normally occur? Question 23 options: a)  In the…

A: Fertilization means the fusion of egg (of female) and sperm(of male). The eggs get matured in the…

Q: When do the oogonia undergo mitosis?a. before birthb. at pubertyc. at the beginning of each…

A: The female reproductive system is formed of the external and internal sex organs, which works in the…

Q: Placenta ... a) ... develops from trophoblast cells. b) ... develops from embryoblast cells. c)…

A: Pregnancy occurs when the male gamete sperm fuses and fertilizes with the female egg that is…

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: Gametogenesis requires the conclusion of meiosis II. When does this occur in females? a. During…

A: Step 1 The major events in human reproduction are gametogenesis, cyclic changes in the human female…

Q: embedded

A: The Uteroplacental circulation is the vascular contact that is present between the uterus and the…

Q: 18. 19. 20. 21.

A: The Plant Kingdom is a diverse group, including organisms ranging from simple aquatic algae to…

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

A: Answer is b.)  chorionic villi.

Q: Parthenogenesis isa. the process by which the germ layers form.b. involved in the formation of the…

A: Reproduction is the process by which living beings produce their own kind.

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: How is colostrum most important to a newborn?a. It helps boost the newborn’s immune system.b. It…

A: Immune system is a complex organization of cells, tissues, and organs. The immune system important…

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: Question 2 Describe how a positive feedback process helps in childbirth.

A: Most cited example of positive feedback is labor and childbirth process.  When head of ferus…

Q: a) Give two types of germ layer and what do they become (b)Briefly describe why it is important the…

A: Germ layers: a. The three layers of tissues that become established during the early embryonic…

Q: Name specific structure "A" placenta Name specific structure "B" pedicel В A

A: The above picture shows an image of tomato which belong to angiosperm. It reproduces by sexual…

Q: Why does continued breastfeeding decrease the chance of pregnancy? (Hint: Think about the effect the…

A: Hormones are the organic substances that are produced in small amounts by specific glands, which are…

Q: pig fetus  Describe how the developing fetus exchanges material during pregnancy.

A: The placenta is a membrane, which surrounds the developing fetus during pregnancy. It provides…

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: Which structure helps to expel the baby during labor? a. myometrium b. cervix c. endometrium d.…

A: In human females, the gestation period is about 9 months and the baby is delivered after this period…

Q: A fertilized egg is the blue print of future development’. Explain

A: A single cell-fertilized egg is transformed into a fully developed and independent individual. It is…

Q: For the first 8 weeks of gestation, a conceptus is nourished mainly by a. The placenta. b. Amniotic…

A: A conceptus receives nutrition is totally depends on the state. The foetus stage receives nutrition…

Q: Umbilical cord contains A allantois B yolk sac C arteries veins

A: The umbilical cord is a stretchable, tubular  structure which joins the fetus to the mother during…

Q: What was important about the development of the egg as a part of the reproductive cycle of animals?…

A: Yolk formation in humans

Q: Newborns are at much higher risk for dehydration thanadults. Why?

A: A baby which is 2 months old from his or her birth is considered newborns.

Q: What tissue came from all 3 germ layers?

A: A germ layer is a group of cells in an embryo that interact with each other as the embryo develops…

Q: After fertilisation, the resulting cell which gives rise to a new individual is the: (a) embryo (b)…

A: Fertilization is a process that occurs during reproduction in organisms. Reproduction is a process…

Q: Explain elwhy there is a high level of estrogen and progesterone once in every 28-day uterine cycle…

A: The ovarian cycle governs the preparation of endocrine tissues and release of eggs, while the…

Q: Muscles are formed by the Group of answer choices   A. ectoderm B. mesoderm C. endoderm

A: Muscle is defined as a group or collection of muscle tissues that contract collectively to create…

Q: In human beings, after fertilisation, the structure which gets embedded in the wall of uterus is:…

A: Embryonic development is the process by which the embryo forms and develops. Embryonic development…

Q: The placenta function to Select one: A. Produce blood cells B. Provide nutrition for the growing…

A: The placenta is a temporary, membranous, vascular organ that develops in females during pregnancy.…

Q: Assess the function of the uterine horns of the pig.

A: Anatomy can be defined as a branch of biology that is associated with the study of the organism’s…

Q: Based on what you know about the goal of gastrulation, suggests the direct developmental consequence…

A: Embryonic development is the process of development of an embryo.  Gastrulation is a process that…

Q: The average gestation period (length of a pregnancy) for humans is 40 weeks.  If a child if born…

A: So. gestation period is the length of the pregnancy duration.  To find the gestation period in…

Q: The process by which the structure labeled B is released from the structure labeled A is known as?…

A: The picture is showing the female reproductive system. It consists of ovary(A), Fallopian tube (C),…

Q: Explain the way in which the yolk amount affects the cleavage. Compare the Cleavage in a sea star…

A: Yolk  Yolk is a nutrient rich part of the egg which support the growth of developing embryo.

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: What happened if there is an excessive secretion of prostaglandin during menstruation?…

A: Prostaglandins are derived from eicosanoids and has an action similar to hormones in animals they…

Q: The cells indicated by the tip of the red arrow A) produce testosterone B) are the interstitial…

A: In the given section of slide showing various cells.

Q: It appeared, then, that something in the region of the gray crescent was essential for proper…

A: The amphibian eggs, when divided into two blastomeres along the plane of first division, the cells…