Embryo Serial Sections
Introduction
Historically, an important way of teaching embryology is by direct observation of histological sections at different stages of development. Even today the best way to observe anatomical development and relationships is by direct observation in serial sections through the embryo and fetus. The sections below are from the original teaching set prepared at UNSW that were digitized and put online in 1996 as a teaching resource.
The images are available in at least two formats, an unlabeled set and a labeled set. In addition there are now 3D animations based upon reconstruction of the embryos from these serial sections.
- Links: Carnegie Stage 13 | Carnegie Stage 22
Carnegie Stage 13
About Stage 13 Embryo Sections - This image is from a serial section of a 6mm CRL pig embryo with some features of the Stage 14 embryo. This embryo is approximately equal to the day 42 human embryo. Use these serial images to identify internal features and relationships that exist within the embryo at this stage. Then compare these images with the later features of the Carnegie stage 22 human embryo.
Stage 13 Serial unlabeled images | Embryo Stage 13 Serial labeled images |
Carnegie Stage 22
About Stage 22 Embryo Sections - The Carnegie stage 22 human embryo is 27mm (CRL) in size and approximately equal to day 54 - 56 of development.
- Links: stage 22 serial sections | selected serial sections | Carnegie stage 22 | Embryo Serial Sections
Stage 22 Serial unlabeled images | Stage 22 Serial labeled images |
About Stage 22 Embryo Sections - The Carnegie stage 22 human embryo is 27 mm (CRL) in size and approximately equal to day 54 - 56 of development (week 8). These images have been selected to show some key features of late embryo development.
- Links: Carnegie stage 22 - selected serial sections | Carnegie stage 22 - serial sections | Carnegie stage 22 | Embryo Serial Sections
Stage 22 serial unlabeled images | Stage 22 Serial labeled images |
Glossary Links
- Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link
Cite this page: Hill, M.A. (2024, May 21) Embryology Embryo Serial Sections. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Embryo_Serial_Sections
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G