Stages in Embryonic Development 1. The heart begins to beat. 2. Inner cell mass differentiates into three germ layers. 3. Mitosis leads to a 100-cell mass. 4. Implantation occurs in the endometrium. The embryonic developments listed above occur in the sequence and

Q: Which of the following are derived from 'trophoblasts'? 1.  epiblast 2.  hypoblast 3.  amnion 4.…

A: After fertilization of the egg and ovum, they produce zygote that start developing by repetitive…

Q: hy is it that the first trimester of pregnancy the most critical in humans? How will you relate it…

A: It is the early phase of pregnancy. The first trimester is marked as 1st day after your last period…

Q: A preembryo has:- a. A neural tube. b. A heart bulge. c. A cytotrophoblast. d. A coelom. e. decidual…

A: Cell denotes the primary structural and functional unit of all living organisms. Scientists…

Q: +Describe the process of implantation of the embryo, what cells are involved and their roles.…

A: Implantation is the process where the blastocyst attaches to the endometrium of the uterine cavity.…

Q: 9. Name the stage of development represented by the three models. 10. The development stages…

A: Fertilization: it can be defined as the union of the nucleus of a sperm cell with the nucleus of an…

Q: 3.The blue arrow is pointing to the region called ?

A: We can say that Embryogenesis is defined as the type of sequential dynamic process where the embryo…

Q: Choose the best of the following The identity of each segment of a developing embryo is…

A: the embryo is the structure formed by the division of zygote. it is the embryo that develops into an…

Q: Congenital heart defect may result from initial problems with which of the following embryo germ…

A: The congenital heart defect is a difficulty with the development of heart structure at the time of…

Q: 37. What are the 36. What are the structures? structures?

A: Hi. Since you have asked multiple questions. We are answering the first one for you. Please…

Q: Which process occurs between the zygote and the embryo stage

A: Fertilization is the process of fusion of the male gamete and the female gamete, resulting in…

Q: Prevents implantation of an embryo.

A: IntraUterine Devices prevents implantation of an embryo. It hinders implantation.

Q: Part 2: Which step triggers release of enzymes by the head of a sperm cell which help dissolve the…

A: Sure, let's break down each step of fertilization and arrange them in the correct order:Penetration…

Q: A high fever can prevent neural tube closure. If a woman had ahigh fever approximately 35–45 days…

A: The health of the embryo depends largely on the health of the mother. Any problem with the health 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: 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: There are 5 primary oocytes that will undergo cell division, How many functional egg cells will be…

A: The journey in short of an oocyte is as follows- the egg follicle is activated, the egg grows and…

Q: Egg are formed in the:         I.   Testes        II.   Penis       III.   Ovary       IV.   None…

A: The processes of formation of male and female gametes are called spermatogenesis and oogenesis…

Q: The following development takes place during the THIRD TRIMESTER a.   a yolk sac appears b.   a…

A: Introduction :  The term "placenta" refers to a vascular structure that forms in the uterus of…

Q: -3. The figure below shows cleavage stages in an embryo. From studying the photographs, what can you…

A: On fertilization, the zygote undergoes cleavage. That is the process of development of multicellular…

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: A human is a complex organism that develops from a zygote. Briefly explain some of the the steps in…

A: Reproduction is the process by which organisms multiply through sexual and asexual modes. It is one…

Q: Which of the following is not an extraembryonic membrane?a. amnionb. mesodermc. choriond. yolk sac

A: The embryo is an initial development phase of the eukaryotic organism following the egg…

Q: Which of the following statements concerning oogenesis is false?   Oogenesis begins before birth.…

A: Oogenesis is the process by which an ovum (egg cell) differentiates into a cell capable of…

Q: The cluster of developing cells from conception birth is called an

A: Introduction: In sexual reproduction the fusion of male and female gamete is fertilization.

Q: 32. What stage of embryo development is this? 33. Name the structure

A: Developmental biology is the branch of biology in which the development of the organisms from 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: From what you know about embryonic development, do you think that a cell from the inner cell mass or…

A: The outer germ layer from which the nervous system is derived during embryonic development is called…

Q: 3. Write 10 embryonic structures and use it in a sentence applying the directional terms ( dorsal,…

A: The living world comprises primarily plants, microbes, and animals. A necessary attribute of living…

Q: The chorion is the_and the amnion is the . site where an embryo is implanted into the uterus; the…

A: The fetal membranes surrounding the embryo provide protection and nourishment to the developing…

Q: State and explain 5 effects of tobacco smoking by a pregnant mother on the foetus development. (400…

A: Since you have posted multiple questions we solve the first question for you. To get the remaining…

Q: The placentaa. develops from the trophoblast.b. allows maternal blood to mix with embryonic blood.c.…

A: After fertilization of the zygote, the cell begins to divide, forming the blastocyst. It is at the…

Q: 3) List the stages of development once the egg is fertilized. (When a woman and a man have sexual…

A: Human embryonic development, or human embryogenesis, refers to the development and formation of the…

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: When the embryo is implanted, what developmental stage this be? cleavage fetus blastula gastrula

A: Sexual reproduction in humans includes a fusion of sperms and eggs to form a zygote.

Q: What process is the beginning of human life? Define it.

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: The outer layer of the blastocyst that attaches to the wal of the uterus at implantation is called…

A: As we know The blastocyst is the early structure of the development. It consists of the inner cell…

Q: Anatomy questions solve this

A: We can say that Birth control can be defined as a contraceptive method to prevent pregnancy in…