One function of the placenta in a 1 point human is to * (1) Allow nutrients to diffuse from the fetal blood to the maternal blood (2) Allow for mixing of maternal blood with fetal blood (3) Act as the heart of the fetus, pumping blood until the fetus is born (4) Permit passage of nutrients and oxygen from the mother to the fetus

Q: 1. A non-pregnant female's uterus shed its lining (the outer endometrial layer) every 4 weeks and…

A: Introduction: Pregnancy, also known as gestation, is when a baby develops and grows within a…

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: here are specific critical periods during fetal development in which any damage caused to the fetus…

A: Pregnancy is a nine-month period during which a fetus develops inside the womb of a female parent.…

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: 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: How do the shape and structure of the uterus of the fetal pig compare with that of the human?

A: Reproductive system is used for the sexual reproduction. Female internal reproductive organs include…

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

A: Answer is b.)  chorionic villi.

Q: The development of ? by Jeffries led to the process of DNA fingerprinting. 1) restriction enzymes 2)…

A: Introduction :- DNA fingerprinting is one of the most important techniques that is being utilised to…

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: A friend in your dormitory, a freshman, tells you that she just discovered she is 3 months pregnant.…

A: After fertilization, the fetus develops within 8 weeks. Most of the prescriptive and…

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: A full-term newborn has respiratory distress. Ultrasonography shows that the abdominal organs have…

A: The objective of the question is to identify the embryonic structure whose abnormal development…

Q: The main function of the acrosome reaction is to (a) activate the egg (b) improve sperm motility (c)…

A: Answer is d.)facilitate the penetration of egg coverings by the sperm.

Q: At what point in embryonic development does the gonadal ridge no longer exhibit bipotential

A: The gonadal ridge stops show double female or male reproductive organs development at a certain…

Q: What is the fate of the inner cell mass? Which of the structures produces human chorionic…

A: The hormones are involved in the human reproductive cycle (female): GnRH  FSH LH Estrogen…

Q: In Deuterostomes, nutrient molecules (monomers) are taken in to the space between the endoderm and…

A: Option (a) is incorrect because, in Deuterostomes, nutrient molecules (monomers) are taken up into…

Q: 6. A male newborn has renal agenesis on the right. Which of the following primitive rudiments most…

A: Introduction:-  Renal agenesis is a rare condition in which one or both kidney are not present in…

Q: 10. Draw and label a 14-day conceptus showing the chorionic sac, the chorionic cavity. Be sure and…

A: During the early stages of embryonic development, various structures and layers form within the…

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: Gastrulation does NOT Select one: a. involve the formation of germ layers b. consist of endoderm,…

A: Introduction: When the new offspring develops from the existing organisms, the process is referred…

Q: In the absence of sex hormones during fetal development, the human body will: A) develop a…

A: The objective of the question is to understand the role of sex hormones in the development of the…

Q: What immediate effect does the SRY gene have on a developing fetus?   A) It directs the gonads to…

A: The sex of the fetus is determined before fertilization which depends on the presence of a Y…

Q: The stage of prenatal development in which there is rapid growth and all of the organ systems are…

A: Developmental biology is the branch of biology in which the development of the organisms from the…

Q: Reproductive physiology (human)     a) At the time of ovulation, the released ovum…

A: The objective of the question is to determine the correct statements about human reproductive…

Q: Match each date in column B (approximate time after conception) with a developmental event or stage…

A: Reproduction is one of the most important functions of an organism in order to further its own kind…

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: Which of the following cell part is absent in a human spermatozoon?   A) nucleus C) cell membrane B)…

A: The sperm head contain a very little cytoplasm and an elongated haploid nucleus which is surrounded…

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: 7. Maternal effect: In Limnaea snail cats, R makes right coiled shells; r makes left coiled shells,…

A: In snail (Limnaea peragra) two types of shell coiling is found one is dextral or right handed…

Q: Which two extraembryonic structures form the placenta in humans? a) chorion and amnion b) amnion and…

A: Placenta is the structure formed between the fetus and the uterine lining of the maternal tissue.…

Q: APGAR

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

Q: Spermatogenesis and oogenesis both involve meiosis but differ in significant ways. One of those…

A: The procedure, incidence, and product production after gametogenesis are all key differences between…

Q: ferent class

A: Introduction  Creatures having a place with class Mammalia are alluded to as warm blooded animals.…

Q: Draw and label a diagram of a 7 week baby in utero. Your diagram should include the following extra…

A: Introduction:- By 7 weeks, the embryo has grown to 10mm in length from head to toe. This measure is…

Q: Why can twins resulting from a single fertilized egg exchange blood or receive organ transplants…

A: The process of taking living tissues or organs from a donor to a recipient with the aim of restoring…

Q: _ are the two components that make up approximately 15 pounds of the recommended weight gain during…

A: Pregnancy represents a unique physiological state characterized by profound anatomical and…

Q: A young couple hoping for a pregnancy buys an over- the-counter pregnancy kit. What substance will…

A: Hormones are chemical messengers produced by specific epithelial cells and released into the…

Q: 37. A 17-week fetus is developing normally. She has age-appropriate extermal female genitalia and a…

A: Development of the Human Reproductive SystemThe compelling and complex process of the human…

Q: All of the following events occur by the end of the eighth week of gestation EXCEPT Select one: a.…

A: The process of fertilization, that is, the fusion of male and female haploid gametes, leads to the…