Intraembryonic mesoderm 12
Share your inquiries now with community members
Click Here
Sign up Now
Lessons List | 52
Lesson
Show More
Lessons
Comments
Our New Certified Courses Will Reach You in Our Telegram Channel
Join Our Telegram Channels to Get Best Free Courses
Join Now
We Appreciate Your Feedback
15 Reviews
Roksar Aslami
Angela Karapetyan
Haritha Reddy
AMINU YUSUFYAHMAN
Show More Reviews
Related Courses in Medical
Course Description
embryology, the study of the formation and development of an embryo and fetus. Before widespread use of the microscope and the advent of cellular biology in the 19th century, embryology was based on descriptive and comparative studies. From the time of the Greek philosopher Aristotle it was debated whether the embryo was a preformed, miniature individual (a homunculus) or an undifferentiated form that gradually became specialized. Supporters of the latter theory included Aristotle; the English physician William Harvey, who labeled the theory epigenesis; the German physician Caspar Friedrick Wolff; and the Prussian-Estonian scientist Karl Ernst, Ritter von Baer, who proved epigenesis with his discovery of the mammalian ovum (egg) in 1827. Other pioneers were the French scientists Pierre Belon and Marie-François-Xavier Bichat.
Baer, who helped popularize Christian Heinrich Pander’s 1817 discovery of primary germ layers, laid the foundations of modern comparative embryology in his landmark two-volume work Über Entwickelungsgeschichte der Thiere (1828–37; “On the Development of Animals”). Another formative publication was A Treatise on Comparative Embryology (1880–91) by the British zoologist Frances Maitland Balfour. Further research on embryonic development was conducted by the German anatomists Martin H. Rathke and Wilhelm Roux and also by the American scientist Thomas Hunt Morgan. Roux, noted for his pioneering studies on frog eggs (beginning in 1885), became the founder of experimental embryology. The principle of embryonic induction was studied by the German embryologists Hans Adolf Eduard Driesch, who furthered Roux’s research on frog eggs in the 1890s, and Hans Spemann, who was awarded a Nobel Prize in 1935. Ross G. Harrison was an American biologist noted for his work on tissue culture.
Trends
UX design career in 2025
Web Design for Beginners
UX UI design
Graphic Design Basics
Excel Accounting and Finance course
Logo Design
Illustrator 3D design for beginners
Make money as a freelance designer
Accounting Finance course
Financial Accounting
Mastering logo design in illustrator
Advanced graphic design techniques
Illustrator for logo design beginners
Create a facebook business Page from Scratch
Create a YouTube account on Your phone
Web Design Using HTML CSS
Royalty accounts fundamentals
Flask Portfolio maker website development
Figma Signing Up and Signing In
Elastic Collisions in Particle Physics
Recent
French possessive pronouns
Musical instruments in french
French conditional verbs
French adverbs
French counting in tens
French verb tenses
Essential french verbs
French reflexive verbs
GCSE french speaking
Common french prepositions
French numbers
Everyday french verbs
French adjectives
French verbs
French Phrases for beginners
Beginner french
French grammar
French prepositions
French writing skills
TEF exam practice