Describe the structure and functions of the four extraembryonic membranes? Compare and contrast the functions of these membranes in chick embryo and in human? Compare and state the fate of these membranes in reptiles, birds and mammals? :42 Embryology and Development Laboratory 15

Q: What are morphogens, exactly? Explain how they affect the patterning of tissue throughout embryonic…

A: Pattern formation is a development process by which the cells acquired different identities…

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: During pregnancy, how does malnutrition during critical periods of development affect the fetus?…

A: Nutrients are important for growth, development, and sustaining life. Based on their requirement…

Q: Three images of a TS19 embryo are shown a mid- sagittal section on the left and two external views…

A: In this particular images we have to describe how central nervous system formed and what is the role…

Q: Explain Briefly Compare and contrast the role of hormones that causes changes to the male and female…

A: At the age of about 8 the hypothalamus gland increases its production of gonadotropin releasing…

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: Briefly describe viviparity and ovoviviparity and compare the embryo's source of nourishment, their…

A: There are  two different methods of fertilization of male and female gametes. It is external…

Q: Explain why breastfeeding can have lifelong, favorable consequences for the development of infants…

A: *Basically in the poverty stricken areas they are unable to consume the required diet as lack of…

Q: Stages in Development   First trimester Second trimester Third trimester Match the developmental…

A: The growth of the baby inside the womb of the mother takes place in three trimester.First trimester…

Q: There are 6 major events in fertilization. Discuss the process of fertilization or conception, with…

A: Fertilization is a process in which male pro nuclei and female pro nuclei come together(fuses that…

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

A: Option D is mis Matched

Q: Briefly discuss avian early embryonic development, starting with fertilization and oviposition,…

A: Introduction  The life starts from single cell called Zygote. A zygote is formed by the fusion of…

Q: What will guide them to make the right decision?  Do they have a choice?

A: Answer: 1.trophobalst or icm if cells choose to become they will end up in the placenta and if they…

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: Describe what happens during the first days of embryonic development from the first cell division…

A: Human embryo development occurs through cell division and the differentiation of cells. Human embryo…

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: During the organogenesis stage, several of the five essential developmental processes take place.…

A: I have discussed a primary step of organogenesis which is crucial for further development in next…

Q: Explain the developmental and functional similarities and differences between:   1. Avian yolk…

A: Three fetal membranes are present in mammals; yolk sac, amnion, and allantois. Yolk sac and…

Q: Identify and describe the stages of human embryonic development

A: Stages of embryonic developement: Germinal stage ~ Fertilization, cleavage, blastulation,…

Q: State what is occuring in process 3 and how it affects the amount of genetic information an…

A: The thing that happens in process 3 is called Fertilization. What is fertilization? The process of…

Q: After fertilization a developing embryos goes through several changes. At about 2-3 days, what is…

A: During fertilization the haploid gametes, that is, sperm from a male and secondary oocyte from…

Q: What are the distinguishable parts of the 72-hour chick embryo? Give at least 5 parts and the adult…

A: Probably the best magical occurrence of nature is the change of the egg into the chick. A chick…

Q: Create a storyboard that depicts an egg's journey through ovulation, fertilization and implantation.

A: The reproductive arrangement of a life form, otherwise called the genital framework, is the natural…

Q: Describe the major developments during each trimester of human gestation.Describe the major…

A: Gestation is the time of advancement during the conveying of an embryo or fetus inside viviparous…

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: Normal childbirth is driven by a positive feedback loop. Analyze the given diagram and discuss in…

A: Homeostasis is the maintenance of stable internal environment. Feedback system helps in maintenance…

Q: What is the one defining characteristic that determines a mammal?

A: A) Well evolved creature, (class Mammalia), any individual from the gathering of vertebrate…

Q: In the 33 hr. chick embryo stage what structure/s would serve as a guide to approximately…

A: Auditory vesicles are distinct. Three pairs of arterial arches arise from the ventral aorta. Somites…

Q: Identify which of the following, if any, are unique to mammals:a female uterus, a male vas deferens,…

A: Mammals are the class of vertebrates that includes humans. They contain mammary glands, middle ear…

Q: Compare and contrast the three types of mammals with respect to fetal development and birth: the…

A: Fetal development begins with implantation when the sperm fertilizes the egg. At this point, the…

Q: For each embryonic tissue type, write one organ or differentiated cell type that is derived from…

A: Introduction:- The endoderm (inner layer), ectoderm (outer layer), and mesoderm (middle layer) are…

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: What do the inner and outer surfaces of the placenta consist of? a) amniotic tissue and corpus…

A: Placenta is a organ that connects the mother's uterus with baby's Umbilical cord.

Q: What are the concepts of the following? 1, developmental anatomy 2, embryology 3,pre-embryology…

A: The reproductive cycle is a complex cycle that goes on in the sexually reproductive organisms like…

Q: List and give the functions of the 4 major extraembryonic fetal membrane

A: The extraembryonic membrane are those extra embryonic structure which are forward from extra…

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: There are 6 major events in fertilization. Discuss the process of fertilization or conception, with…

A:

Q: How many follicle cells will fit inside? Is there an abundance of yolk within the cytoplasm of the…

A: Oocyte It is an immature ovum or egg cell which is a female gametocyte or germ cell. It is involved…

Q: Which of the following correctly lists the germ layers of an embryo? O A. exoderm, mesoderm,…

A: Step 1 Embryonic development or embryogenesis is the development of the embryo from the fertilized…

Q: development of babies

A: Introduction:- Children grow and develop rapidly in their first five years across the four main…

Q: Compare the processes of oogenesis andspermatogenesis in humans

A: A cell that contains half the number of chromosomes of a somatic cell and able to unite with one…

Q: Briefly summarize the main phases of animal development from fertilization to organogenesis, and…

A: After a sexual intercourse , the fertilization process takes place. Once the fertilization takes…

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: What is a doula? What does human development research say about the use of support during labor?

A: The term doula is derived from a greek word which means helper or maid servant. A doula is not…

Q: Address the items below as they relate to human embryology; a) discuss when the germ layers of…

A: The study of the development and formation of an embryo is known as human embryology. The study of…