General Embryology and Early Development notes
23 notes by 16 users
This GoConqr page gathers a small set of community-made notes on General Embryology and Early Development, from blastocyst formation and gastrulation to cardiac embryology. They are for university students and professional candidates studying development, and teachers looking for material to support teaching. Pick a note that matches the topic you are studying.
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- Gametogenesis6
- Fertilization, Cleavage and Implantation53
- Gastrulation and Germ Layers28
- Neurulation and Nervous System Development29
- Cell Differentiation and Cell Fate6
- Embryonic Folding and Body Cavities5
- Head and Neck Development18
- Cardiovascular System Development14
- Digestive and Respiratory System Development10
- Urogenital System Development11
- Breast Development5
- Chick and Mouse Embryonic Development17
Notes
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Blastocyst formation and gastrulation Mammals follow a different route to become blastocysts not blastula. Cleavage is slow (12-24 hours) Gene transcription begins at the 2-cell stage. Cleavage takes place within the ZONA PELLUCIDA to form a MORULA (solid...
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Embryology overview What is embryology? Study of origin & development of an organism What is the time frame in which we study embryology? Prenatal period! - (before birth) Human gestation = ~ 38 weeks Gynecologists ...
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Mechanisms in Embryo development General Development: 2 phases: Prenatal (before birth) and postnatal (after birth) Embryology is the study of fertilisation to birth (prenatal): Embryonic period: all major organ systems established Foetal perio...
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Embryology-Nervous System Neurulation: Notochord induces columnar ectodermal cells to become pseudostratified neuroepithelial cells & form a spoon-shaped plate called neural plate to forms primordium of the brain (earliest recognisable stage o...
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Topic 2c: embryogenesis
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Gastrulation, Coelom Formation and Neurulation Gastrulation: Formation of 3 somatic germ layers (ectoderm, mesodem, endoderm) and germ line (primordial germ cells) Conversion of bilaminar to trilaminar embryonic disc Begins with formation of primitive streak: &nbs...
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Mesoderm Induction The importance of MesodermThe patterning of the mesoderm from dorsal to ventral and anterior to posterior is crucial to the patterening of the rest of the embryo. Signals from neighbouring groups of mesodermal cells d...
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Cardiac embryology Foetal heart adaptations Oxygenated blood from allantois via umbilical veins in abdomen Some nutrition from yolk sac via vitelline veins Pulmonary system is not functional Blood vessels collapsed...
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9 classifications by germ layer basal phyla: 2 germ layers bilateriens: 3 germ layers 4 major branches of metazoans: PDPD Porifera (sponges) diploblasts; protostomes; 3 germ layers deuterostomes; 3 germ laye...
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Lec 7 - Twins What are twins? i) Definition Two offspring produced by same pregnancy ii) Types Identical (monozygotic) Fraternal (dizygotic) Conjoined
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Chapter 3: Embryogenesis and Development Fertilization - occurs in wide part of fallopian tube/ampulla. Sperm binds to oocyte and releases acrosomal enzymes that allow head of sperm to penetrate. Oncer sperm comes to direct contact with secondary oocyte's ce...
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Embryo Cleavage and Blastulation Fusion of pronuclei in zygote allow mixing of paternal and maternal chromosomes (syngamy) Oocyte cytoplasm contains all enzymes/proteins that initiate cleavage and activate embryonic genome Cleavage: Mitotic division ...
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Embryology of the breast Embryology of the breast Mammary glands: - specialised, modified sweat glands - 4th wk: Appearance of ventral crests from the axilla to the inguinal region - 5th wk: Involution of most of the mammary crests; wh...
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CARDIOVASCULAR EMBRYOLOGYHEART EMBRYOLOGY: - The single heart tube begins to beat at 23 days of development and by 30 days blood circulates through the embryo. EMBRYONIC FOLDING: - 3 week, the germ disk hasta the appearance of a fla...
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Untitled Epigenesis: Idea that all the materials and nutrients required to produce the infant are already provided in the egg. Preformation: Theory that an infant is already inside the egg or sperm. Cell Specialization C...
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Fertilization_2 - created from Mind Map Fusion of pronuclei Division of Blastomeres Morula Blastocyst - fluid pumped into center of morula Inner cell mass = embryo Trophoblast (fetal contribution to the placenta) Pregnancy Yes No Syncytiotrophoblast secrets...
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Embryology Week 1 Natalie Ellis - created from Mind Map Fertilization No Fertilization in ampulla of uterine tube
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Embryology Gastrulation i) General features ii) Primitive streak
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Lecture 1 Intro to Embryo Introduction to Embryology - Lecture 1 Development:The discipline that studies all processes relating to how a multicellular organism forms from a single cell and how that organism: -maintains tissue homeostasis (stem...
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Untitled Mesoderm: muscle,skeleton,circulatory, excretory systems. gonads, connective tissue, adrenal cortex. Ectoderm: epidermis, hair, nails, the epithelia of the nose, mouth, and anal canal Endoderm: epithelial lining of re...
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Untitled notochord forms from mesoderm- During Pregnancy in the mothers, blood progesterone is found from the placenta paracrine is a neighbor, while juxtacrine is adjacent cells. Telomerase produces more telomeres preventing ...
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Untitled Merkel's diverticulum: remnant of Proximal omphaloenteric duct fingerlike projection fr. ileum persistence of vitelline duct & can attached to umbilicus can mimic signs of Appendicitis & peptic ulcers other signs: per...
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Dev Bio Test 3 Left - Right Asymmetry Initial breaking of symmetry (in Node, Organizer) .Asymmetric signals are transmitted to lateral plate mesoderm Asymmetric expression of genes, including Nodal; Lefty 1 Generation of disti...
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About general embryology and early development notes
GoConqr OriginalGeneral Embryology and Early Development notes
These notes cover early development through several approaches. Embryology overview introduces the field and the prenatal period. Blastocyst formation and gastrulation looks at cleavage and blastocyst formation, while other notes cover mesoderm induction, cardiac embryology and nervous system development.
How to study with the notes
Start with Embryology overview if you want a broad introduction before reading about a particular process. For a closer look at the heart, turn to Cardiac embryology. There is also a note on embryology of the breast for readers studying that topic.
As you read, write down the stages or structures described, then try to explain them without looking at the note. Return to the passage when you need to check a detail. If you want to test your recall or see connections in a different form, switch to a quiz or mind map on the unit page.
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Frequently asked questions
Which note is a useful place to start?
Embryology overview is a useful starting point if you want an introduction to the field and the prenatal period. For a more focused reading, Blastocyst formation and gastrulation covers cleavage and blastocyst formation. Choose between them based on whether you want a broad introduction or a specific process.
What topics do the notes cover?
The notes cover processes including blastocyst formation, gastrulation and mesoderm induction. Others focus on cardiac embryology, nervous system development and embryology of the breast. The collection also includes an overview, so you can read broadly before moving to a topic that matches your studies.
Are these notes free to use?
Yes. Every note listed here is free to open and study without an account. The resources were made by GoConqr users rather than by GoConqr. A free account also lets you save quiz scores and make your own quizzes, mind maps, flashcards and notes.