a) The names of three germ layers are 1) Ectoderm 2) Mesoderm and 3) Ectoderm (Describe relative location) b) The ectoderm gives rise to the central nervoUS system and skin the mesoderm specifies

Q: The Mullerian ducts in female mammalian embryos develop into…   a)   The vas deferens   b)   The…

A: During embryonic development, the reproductive system goes through a complex differentiation process…

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: Select your answer from the drop-down menu. Substances from fetus and mother are exchanged across…

A: Explanation: Glucose is the major energy substrate provided to the placenta and fetus. It is…

Q: In females, meiosis is not completed (a) until birth. (b) until puberty. (c) until fertilization…

A: Gametogenesis is a process by which gametes are produced through meiotic division. Sperm and egg…

Q: O a) is an inflexible muscle. b) houses the developing baby in a woman's abdomen. Oc) is the upper…

A: The female reproductive system is comprising of the internal and external sex organs. It's main…

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 placenta functions to Select one: a. produce blood cells b. create amniotic fluid c. provide…

A: The placenta is a large organ that consists of the blood vessel. It begins to form the blastocyst…

Q: What is the difference between internal & external fertilization?

A: The process in which a male gamete commonly known as sperm that is released by the male reproductive…

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: 14.)Which hormone is inhibited during pregnancy in order to prevent contractions of the uterus? a.)…

A: Introduction: Hormones are chemical compounds that function in the body as messenger molecules. They…

Q: 1)Development is just another name for fertilization a)True b)False 4)A fertilized egg is the same…

A: Fertilization is a term used to denote the fusion of male gamete i.e. sperms/pollens with the female…

Q: Nutrient and waste requirements for the developing fetus are handled during the first few weeks by:…

A: Endometrium is the innermost lining of the uterus which undergoes cyclic changes during…

Q: Compare and contrast between the following: (1) Medio-lateral intercalation and radial…

A: The layers of a human embryo, from innermost to outermost, are the endoderm, mesoderm, and ectoderm.…

Q: 35. The differentiation of the primitive gonads into testes or ovaries depends on the presence or…

A: The Y chromosome have SRY gene which is referred to as the sex determination region. This is present…

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 consists of both fetal and maternal tissues? (a)umbilical cord (b) placenta…

A: The unborn offspring that is known to develop from an embryo is called the fetus. The overall…

Q: Why is a second polar body expelled after fertilisation?   a)   To remove excess cytoplasm   b)…

A: The second polar body is a small, non-functional cell that is produced during oogenesis after the…

Q: An oophorectomized monkey is treated with high doses of estrogen. Which of the following changes is…

A: The question is asking about the likely changes in the endometrium of a monkey that has been…

Q: The outer layer of the blastocyst, which attaches to the uterine wall, is the (a) yolk sac, (b)…

A: After fertilization, when the embryo reaches the fifth or sixth day, blastocysts' formation occurs.…

Q: During the formation of mesoderm and its derivative structures and tissues, several of the five…

A: Step 1 The mesoderm is the third germinal layer that appears in the third week of embryonic…

Q: List the five regions of the mesoderm, and identify some major body parts derived from each region.

A: One of the three germ layers that lie between the other two germ layers called the ectoderm, and the…

Q: Monozygotic twins develop from a) one egg, fertilized by one sperm b) one egg, fertilized by two…

A:

Q: Into which structures do the trophoblast cells of the developing embryo, differentiate?   a)   The…

A: The fusion of male and female gamete produces zygote. This process is known as fertilisation. Zygote…

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: 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: he placenta develops from:  Question 26 options: a)  Maternal tissue only b)  Both fetal and…

A: The placenta is an organ that is developed in the female body during the gestation period. Its…

Q: Which of the following rows correctly identifies the development of the germ layers? Select one:…

A: The germ layers are an embryonic collection of cells that aid in the creation and development of…

Q: Classify and diagram embryos on the basis of their: (a) yolk content, (b) cleavage types, (3)…

A: Cleavage in animals is depends upon amount of yolk. Yolk distribution can be complete ( holoblastic…

Q: What is the specific hormone that functions primarily during pregnancy? A) Estradiol  B) Estriol…

A: There are two hormones released by ovaries: estrogen and progesterone. Progesterone helps in the…

Q: During which trimester does the risk of spontaneous miscarriage decrease significantly? A) First B)…

A: A spontaneous miscarriage or abortion occurs before the fetus can live outside the womb. This…

Q: What technology would enable a fetus born in the fourth month to survive in a laboratory setting?…

A: A preterm baby or premature birth is the birth that occurs before 37 weeks of pregnancy. Babies born…

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: e) None of the answers 31- Which stage of prenatal development goes from the second to the 8h week…

A: As per our company's guidelines we are supposed to answer three sub parts only. Please repost the…

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: which germ layer (tissue) gives rice to our nervous system and outer coverings. a) endotherm b)…

A: The mesoderm, or middle tissue, gives rise to most of the muscle and connective tissues. Finally the…

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: Which of the following statements is incorrect?a. The placenta secretes hormones such as…

A: The placenta is a temporary organ that is formed in the uterus during pregnancy. The umbilical cord…