Q: The brain and spinal cord develop from a longitudinal ectodermal channel called the _____.
A: Brain and the spinal cord consists of the central nervous system of the body and the nervous system…
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: 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: embedded
A: The Uteroplacental circulation is the vascular contact that is present between the uterus and the…
Q: Which of the following structure develops into only the fetus? A. Blastocyte B. Zygote C.…
A:
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: The inner cell mass of a human blastocysta. gives rise to the chorion.b. gives rise to the…
A: Cell is the basic unit of life. Based on the number of cells an organism may be prokaryotic or…
Q: All fish, all birds and all mammals are A animals with internal fertilization. B carnivores. C…
A: Classification of animals includes the following phyla:Phylum - PoriferaPhylum - CnidariaPhylum -…
Q: Which of the following has three germ layers? (a) morula (b) gastrula (c) blastula (d) blastocyst…
A: Answer is b.) gastrula.
Q: What would happen if the trophoblast did not secrete hCG upon implantation of the blastocyst? a. The…
A: Implantation is the process that signals that the pre-embryonic development stage is completed. This…
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: The process that establishes the foundation of all major organ systems is (a) cleavage. (b)…
A: Developmental biology is about the study of embryo formation, organ and fetal development. Genes…
Q: The outermost germ layer in a vertebrate gastrula is the____ . a. endoderm c. mesoderm b. ectoderm…
A: BASIC INFORMATION FERTILIZATION It is the process of the fusion of the male as well as the female…
Q: A gastrulation does NOT Select one: A. Consist of endoderm, mesoderm, and ectoderm B. Result in the…
A: In developmental biology, gastrulation is a stage early in the embryonic development of many…
Q: Match the germ layer with the correct derivative Gastrodermis v [ Choose ] Ectoderm Endoderm…
A: There are 3 germ layers ectoderm, mesoderm and endoderm giving rise to different organs in…
Q: The feature that distinguishes a fetus from an embryo is that the fetus has a. All of the organ…
A: Answer is a.) All of the Organ systems.
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: Label each tissue with the specific source germ cells: v Gastrointestinal tract A. Intermediate…
A: We are tripoblastic organisms that means we contains three types of germ layers that includes…
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: Which of the following statements about gastrulation is correct? A. During gastrulation, the…
A: The embryonic development after 15 days of fertilization marks gastrulation.
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: 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…
Q: 4. Sarcomas and hematopoietic cancers are both derived from which germ layer? A. Ectoderm B.…
A: "Cancer" is a fatal disease that has both physical and mental consequences for a person. Cancer can…
Q: The archenteron develops into(A) the mesoderm.(B) the endoderm.(C) the placenta.(D) the lumen of the…
A: Gastrulation is the process of reorganization of the blastula, a hollow structure into a two or…
Q: In which type of animalsdoes the placenta exist? Whatis its main function?
A: The placenta is a large organ that develops during pregnancy. It is usually attached to the uterine…
Q: Which tissue type or organ is correctly matched with its germ layer tissue? A) nervous–mesoderm B)…
A: Introduction :- The mesoderm is a germ layer that develops between the ectoderm, which produces skin…
Q: Explain the following terms: ectoderm, endoderm, mesoderm and stem.
A: Animal phylogeny is a rapidly changing field. The biologists mostly depend on the fossils to compare…
Q: Which of the following statements is not true about the placenta? A. It provides exchange of wastes…
A: During pregnancy, inside the uterus, the organ placenta develops. It is found attached to the wall…
Q: Which mechanism prevents an ovum from being fertilized by multiple sperm cells? A. Once a sperm…
A: An egg should be prepared by only one sperm in particular. To forestall polyspermy, the zona…
Q: In human beings, after fertilisation, the structure which gets embedded in the wall of uterus is:…
A: Embryonic development is the process by which the embryo forms and develops. Embryonic development…
Q: The placenta function to Select one: A. Produce blood cells B. Provide nutrition for the growing…
A: The placenta is a temporary, membranous, vascular organ that develops in females during pregnancy.…
Q: During oogenesis the cell that is fertilized by a sperm to become an egg is: A primary…
A: Oogenesis is the process of 'oocyte development 'in females. The resulting cell is called gamete…
Q: Placenta is the structure formed: A. by the union of foetal and uterine tissue B. by foetus…
A: The uterus or womb is a hollow muscular organ which is located in the pelvis of female between the…
Q: Place the number corresponding to the correct germ layer in the blank. ____ Mesoderm ____…
A: During gastrulation, the hollow sphere of balls called blastula develops into a gastrula.…
Q: In the documentary film "Life inside the Womb by Body Atlas". This film shows the physical…
A: The film “Life inside the Womb by Body Atlas” describes the formation of a baby inside the fetus of…
Q: Which female organ has an endometrial lining that will support a developing baby? a. labia minora b.…
A: Reproduction is a biological process of forming offspring by the fusion of male and female…
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: The folding of ectoderm on the top of the embryo during organogenesis produces...? Group of answer…
A: In humans, the folding of neuro-ectoderm gives rise to one of the most important structure i.e…
Q: The uterus rises out of the pelvis and becomes an abdominal organ about the: a. Eighteenth weeks of…
A: Uterus is present in female, it's a hollow organ located between rectum and bladder.
Q: During morphogenesis, gastrulation does which of the following? A. Gastrulation produces the…
A: Several stages are involved in the development of a baby from a zygote during pregnancy. It begins…
Q: The ectodermal layer in the fetus will develop into:
A: Correct answer: Nerve and Skin (first option)
Q: The birth starts thanks to increased ...
A: The correct option is B . Release of Oxytocin
Which of the following is not derived from the ectoderm?
a. adrenal medulla
b. epidermis of skin
c. liver
d. nervous system
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- Layer A is called _____X________, and ______Y________ develops from this layer. Select one: a. X Y Ectoderm Nervous system b. X Y Endoderm Nervous system c. X Y Endoderm Lining of the digestive tract d. X Y Ectoderm Lining of the digestive tractOdontoblasts are derived from a. Ectoderm b. Endoderm c. Histiocytes d. Undifferentiated mesenchymal cellsWhat organ does the somatic hypomere originating from the general mesoderm give rise to? a. gonads b. pancreas c. heart d. kidney
- Which of the following structure develops into only the fetus? A. Blastocyte B. Zygote C. Trophoblast D. Inner cell massWhich of the following statements is incorrect?a. The placenta secretes hormones such as progesterone, hCG, and estrogen.b. Embryonic tissue and maternal tissue forms the placenta.c. The chorion supplies nutrients to the embryo by diffusion.d. The umbilical cord is formed by one artery and two veinsWhich of the following structures develops into only the fetus? a. Inner cell mass b. Trophoblast c. Blastocyst d. Zygote
- Which of the following statements is NOT correct about the umbilical cord? Select one: a. The umbilical cord is formed from the chorion. b. The placenta connects to the embryon via the umbilical cord. c. The umbilical cord consists of two arteries and one vein. d. The umbilical cord is formed from the yolk sac and the allantois.The mesoderm gives rise to a. structures derived from epidermis, such as hair, feathers, nails, or claws. b. the lining of the digestive tract, pancreas, and liver. c. only the liver. d. the heart, blood vessels, muscle, and bones.Which of these embryonic germ layers gives rise to muscle, bone, andblood vessels?a. ectoderm b. endoderm c. mesoderm
- Choose which tissue would line the fallopian tubes and function as a "conveyer belt" to help move a fertilized egg towards the uterus. a.stratified squamous epithelium b.ciliated simple columnar epithelium c.simple cuboidal epithelium d.smooth muscleWhich of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The trophoblast is a germ layer. c. The inner cell mass is a source of embryonic stem cells. d. The blastula is often a hollow ball of cells.Match the germ layer on the right with its contribution to the tissues and organs of the embryo, on the left. v connective tissue stroma A. mesoderm v parenchymal cells, e.g., liver B. ectoderm C. mesoderm D. mesoderm E. endoderm F. endoderm vasculature v innervation v epithelium of enteric secretory duct tubes v epithelium of integumentary system G. ectoderm v elastic membrane