File:Stage 13 image 002.jpg
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Image Features
Development of the Nervous System
Image l-7: Midbrain and hindbrain. The isthmus can be observed on 3 - 4 as a constriction between the mid- and hind-brain. The hindbrain is already subdivided into two parts, the slim myelencephalon and the wider metencephalon. The boundary between these two parts is roughly at the level of the otic vesicles 3 - 4. Identify the optic cup and stalk, which are derived from the forebrain 9 - 13. Caudally one can identify the spinal cord along the entire length of the embryo.
Development of the Auditory System
Image 2: Otocyst (right). Apex of otocyst (origin of L endolymphatic sac)
Craniofacial Development and Pharynx
Image 2 and 3: Otocyst , otic capsule, rhombencephalon and its subdivisions the rhombomeres.
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 |
System Links: Introduction | Cardiovascular | Coelomic Cavity | Endocrine | Gastrointestinal Tract | Genital | Head | Immune | Integumentary | Musculoskeletal | Neural | Neural Crest | Placenta | Renal | Respiratory | Sensory | Birth |
Cite this page: Hill, M.A. (2024, June 10) Embryology Stage 13 image 002.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage_13_image_002.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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