For the first 8 weeks of gestation, a conceptus is nourished mainly by a. The placenta. b. Amniotic fluid. c. Colostrum. d. Decidual cells. e. Yolk cytoplasm

Q: After fertilization the blastocyst develops three germ layers. Which germ layer is the innermost…

A: In the human embryo , after about three days of fertilisation,the zygote forms a solid mass of cells…

Q: The timing of puberty can be influenced by which of the following? a. genes b. stress c. amount of…

A: BASIC INFORMATION  PUBERTY  It is basically the process in which there is changes in the body.  The…

Q: Give the origins and functions of the chorion, amnion, allantois, and yolk sac.

A: The extraembryonic membrane can be defined as the type of membrane which helps in the development of…

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: umbilical cord is formed from the chori

A: Within the uterus, the cells start to divide and form a ball of cells known as the blastocyst. It…

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: 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 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: he presence of human chorionic gonadotropin (HCG) A. Indicates pregnancy B. Indicates…

A: Pregnancy is the gestation period in which the development of the fetus occurs inside the uterus of…

Q: Which of the following has three germ layers? (a) morula  (b) gastrula (c) blastula (d) blastocyst…

A: Answer is b.)  gastrula.

Q: Chorionic villi develop from:- a. the zona pellucida. b. the endometrium. c. the…

A: Chorionic Villi sprout from the chorion after their rapid proliferation in order to give a maximum…

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 a female human, the oogonium forms when the female is a _____________.

A: Singular word – oogonium, the plural word is oogonia. Oogonia is an immature female reproductive…

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: During human gestation, rudiments of all organs develop (A) in the first trimester. (B) in the…

A: Gestation is the time required for the full development of a fetus. It is divided into pre-embryonic…

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: 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: Which of the following statements is TRUE about corpus luteum? O A. Secretions of the corpus luteum…

A: The corpus luteum produces progesterone, which is necessary for the embryo's growth. The placenta…

Q: Which of the following is not a phase of the ovarian cycle? a follicular b. secretory C. ovulation…

A: The ovary is the primary female sex organ, localized on the sides of the lower abdomen in human…

Q: Which of the following does not pertain to the apical germarium? A. contains the primary female germ…

A: The ovary is a female reproductive system organ that produces an ovum which travels down the…

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: 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: The..........is a hollow ball of cells that develops from the morula. a) Blastocyst b) Oviduct c)…

A: The fusion of male gamete (haploid) and female gamete (haploid) is known as fertilization. It…

Q: The hypoblast layer of the blastodisc is made of cuboidal cells and forms during the fetal period. O…

A: After 4 -6 days of fertilization, the morula reaching the uterus form blastocoel and transform into…

Q: If the egg is NOT fertilized, the lining of the uterus will shed.  This is called?

A: In the event that the egg is fertilised by a sperm cell as it goes down the fallopian tube,…

Q: Which of these produces blood cells and germ cells at the early stages of fetal development? O…

A: The yolk sac is responsible for producing blood cells and germ cells during the early stages of…

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: The birth starts thanks to increased ... ... release of glucocorticoids from the fetus. ...…

A: The time between the initiation of productive contractions and the birth is referred to as the birth…

Q: On average, girls begin puberty at about the ageof______________ , boys at about the age of…

A: Girls' breasts normally develop earliest as they approach puberty.Breast buds can be exceedingly…

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 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: Which statement relating to frog gastrulation is INCORRECT? a. A second set of bottle cells…

A: Embryonic development refers to the division in zygote and growth that ultimately goes through…

Q: explain the developmental processes that will happen to the fertilized ovum of a dog or any animal

A: The individual entity that embodies the attributes of life is known as an organism. There are two…

Q: ain The process of releasing of an egg from the ovary is called .

A: Ova (singular egg cell, from the Latin term egg cell, which means 'egg') is another name for egg…

Q: Visit this site (http://openstaxcollege.org/l/pregstages)for a summary of the stages of pregnancy,…

A: The period of pregnancy can last for about 40 weeks from the first day of the last normal period.

Q: During which of the 3 stages of oogenesis does the oocyte nucleus move?

A: Oogenesis- Oogenesis is the process of formation of female gametes. This process begins inside the…

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: Gastrulation occurs to form which three tissues? O hypoblast O ectoderm mesoderm O endoderm O B, C,…

A: During the early stages of embryo development, a multitude of signals are being released, some of…

Q: Enlist any two functions of a female placenta.

A: A fetus is the unborn offspring of an animal that develops from an embryo. The placenta is a…