2009 Lab 4: Difference between revisions
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=Cardiovascular and Placenta= | =Cardiovascular and Placenta= | ||
== Introduction == | |||
The vascular system of the embryo is formed from blood islands that appear in the extraembryonic mesoderm of the yolk sac and the embryonic mesoderm (primarily splanchnic mesoderm). Both of these clusters fuse together and extend, forming a vast network. | |||
The early circulation has 3 components: Vitelline, Embryonic, Placental Each of these has its own system of arteries and veins. | |||
* '''Vitelline''' - (not shown) the vitelline arteries branch off the dorsal aortas and enter the yolk sac, covering its entire surface. The vitelline veins return red blood cells from the capillary beds to the sinus venosus, posterior to the heart. The vitelline vessels eventually contribute to the portal system of the liver in the adult. | |||
* '''Embryonic''' - blood from the dorsal aorta enters intersegmental arteries, including the arteries of the pharyngeal arches. The blood returns to the heart via the anterior and posterior cardinal veins. | |||
* '''Placental''' - the umbilical arteries receive blood from the aorta. This is carried to the chorionic villi, where exchange occurs with the mother. Waste products are disposed of, nutrients and oxygen are collected, and then the umbilical veins convey the blood to the sinus venosus. | |||
'''Heart''' - The heart develops from cardiogenic mesoderm, a region of splanchnic mesoderm lying above the buccopharyngeal membrane. Development begins in week 3 with the formation of a pair of heart tubes. These fuse and form a single tube in week 4, as a result of the embryonic folding processes that occur. As the heart grows, septation events occur, transforming it into a 4-chambered pump. Initially, the ventricles develop above the atria; however simultaneous growth and bending of the tube bring the structures into correct position. In humans, the heart begins to beat on day 22-23. | |||
==Objectives== | ==Objectives== | ||
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[[File:Stage13_bloodflow.jpg]] | [[File:Stage13_bloodflow.jpg]] | ||
== Stage 14 Embryo == | |||
'''Stage 14 3D CVS reconstruction''' [http://embryology.med.unsw.edu.au/Movies/CVS3dmodel.htm Small movie page] | [http://embryology.med.unsw.edu.au/Movies/CVS3dmodelonly.htm large movie page] | [[Media:CVS3d.mov|Stage 14 3D small movie]] | [[Media:Stage_14_CVS3d_large.mov|Stage 14 3D large movie]] | |||
[[File:Stage14 planesm.gif|left]] | |||
{| class="prettytable" | |||
|- | |||
| [http://embryology.med.unsw.edu.au/wwwpig/piga/a1l.htm A1] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/piga/a2l.htm A2] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/piga/a3l.htm A3] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/piga/a4l.htm A4] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/piga/a5l.htm A5] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/piga/a6l.htm A6] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/piga/a7l.htm A7] | |||
|- | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigb/b1l.htm B1] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigb/b2l.htm B2] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigb/b3l.htm B3] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigb/b4l.htm B4] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigb/b5l.htm B5] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigb/b6l.htm B6] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigb/b7l.htm B7] | |||
|- | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigc/c1l.htm C1] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigc/c2l.htm C2] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigc/c3l.htm C3] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigc/c4l.htm C4] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigc/c5l.htm C5] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigc/c6l.htm C6] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigc/c7l.htm C7] | |||
|- | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigd/d1l.htm D1] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigd/d2l.htm D2] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigd/d3l.htm D3] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigd/d4l.htm D4] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigd/d5l.htm D5] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigd/d6l.htm D6] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigd/d7l.htm D7] | |||
|- | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pige/e1l.htm E1] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pige/e2l.htm E2] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pige/e3l.htm E3] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pige/e4l.htm E4] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pige/e5l.htm E5] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pige/e6l.htm E6] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pige/e7l.htm E7] | |||
|- | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigf/f1l.htm F1] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigf/f2l.htm F2] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigf/f3l.htm F3] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigf/f4l.htm F4] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigf/f5l.htm F5] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigf/f6l.htm F6] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigf/f7l.htm F7] | |||
|- | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigg/g1l.htm G1] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigg/g2l.htm G2] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigg/g3l.htm G3] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigg/g4l.htm G4] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigg/g5l.htm G5] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigg/g6l.htm G6] | |||
| [http://embryology.med.unsw.edu.au/wwwpig/pigg/g7l.htm G7] | |||
|} | |||
Compare this mid-embryonic cardiovascular system with that existing at the end of embryonic development [http://embryology.med.unsw.edu.au/Movies/CVS3dmodelst22.htm Stage 22 3D CVS reconstruction] | |||
== Group projects == | == Group projects == | ||
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The laboratory will also allow time for work on the group online project. What have your other group members and other groups done so far? | The laboratory will also allow time for work on the group online project. What have your other group members and other groups done so far? | ||
{{Template:Projects09}} | |||
==UNSW Embryology Links== | ==UNSW Embryology Links== | ||
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'''Embryo Images Unit:''' [http://www.med.unc.edu/embryo_images/ Embryo Images Online] Early Cell Populations (cardiogenic section) | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardevtoc.htm Cardiovascular Development] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev001.htm Week 3 Development] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev007.htmhttp://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev007.htm Week 4 Development] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev018.htm Heart Chambers and Outflow Tract] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev022.htm Atrioventricular Septation] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev028.htm Outflow Tract Septation] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev035.htm Ventricular Septation] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev036.htm Atrial Septation] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev040.htm Atrial Walls] [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev041.htm Aortic Arch Vessels] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev042.htm Changes at Birth] | '''Embryo Images Unit:''' [http://www.med.unc.edu/embryo_images/ Embryo Images Online] Early Cell Populations (cardiogenic section) | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardevtoc.htm Cardiovascular Development] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev001.htm Week 3 Development] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev007.htmhttp://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev007.htm Week 4 Development] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev018.htm Heart Chambers and Outflow Tract] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev022.htm Atrioventricular Septation] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev028.htm Outflow Tract Septation] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev035.htm Ventricular Septation] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev036.htm Atrial Septation] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev040.htm Atrial Walls] [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev041.htm Aortic Arch Vessels] | [http://www.med.unc.edu/embryo_images/unit-cardev/cardev_htms/cardev042.htm Changes at Birth] | ||
{{Template: | {{Template:2009ANAT2341}} | ||
[[Category:2009ANAT2341]][[Category:Science-Undergraduate]] | [[Category:2009ANAT2341]] | ||
[[Category:Science-Undergraduate]] | |||
[[Category:Heart]] | |||
[[Category:Cardiovascular]] |
Latest revision as of 14:10, 18 August 2010
Cardiovascular and Placenta
Introduction
The vascular system of the embryo is formed from blood islands that appear in the extraembryonic mesoderm of the yolk sac and the embryonic mesoderm (primarily splanchnic mesoderm). Both of these clusters fuse together and extend, forming a vast network.
The early circulation has 3 components: Vitelline, Embryonic, Placental Each of these has its own system of arteries and veins.
- Vitelline - (not shown) the vitelline arteries branch off the dorsal aortas and enter the yolk sac, covering its entire surface. The vitelline veins return red blood cells from the capillary beds to the sinus venosus, posterior to the heart. The vitelline vessels eventually contribute to the portal system of the liver in the adult.
- Embryonic - blood from the dorsal aorta enters intersegmental arteries, including the arteries of the pharyngeal arches. The blood returns to the heart via the anterior and posterior cardinal veins.
- Placental - the umbilical arteries receive blood from the aorta. This is carried to the chorionic villi, where exchange occurs with the mother. Waste products are disposed of, nutrients and oxygen are collected, and then the umbilical veins convey the blood to the sinus venosus.
Heart - The heart develops from cardiogenic mesoderm, a region of splanchnic mesoderm lying above the buccopharyngeal membrane. Development begins in week 3 with the formation of a pair of heart tubes. These fuse and form a single tube in week 4, as a result of the embryonic folding processes that occur. As the heart grows, septation events occur, transforming it into a 4-chambered pump. Initially, the ventricles develop above the atria; however simultaneous growth and bending of the tube bring the structures into correct position. In humans, the heart begins to beat on day 22-23.
Objectives
- Understand development of early embryo heart and vascular system.
- Understand the early placentation events and the development of placental blood vessels.
Introduction
This laboratory will explore the development of the embryonic cardiovascular system, which includes the placental vascular system. We will look through cross-sections of the Carnegie stage 13 embryo and follow the flow of blood through the embryonic vasculature.
Stage 14 Embryo
Stage 14 3D CVS reconstruction Small movie page | large movie page | Stage 14 3D small movie | Stage 14 3D large movie
A1 | A2 | A3 | A4 | A5 | A6 | A7 |
B1 | B2 | B3 | B4 | B5 | B6 | B7 |
C1 | C2 | C3 | C4 | C5 | C6 | C7 |
D1 | D2 | D3 | D4 | D5 | D6 | D7 |
E1 | E2 | E3 | E4 | E5 | E6 | E7 |
F1 | F2 | F3 | F4 | F5 | F6 | F7 |
G1 | G2 | G3 | G4 | G5 | G6 | G7 |
Compare this mid-embryonic cardiovascular system with that existing at the end of embryonic development Stage 22 3D CVS reconstruction
Group projects
The laboratory will also allow time for work on the group online project. What have your other group members and other groups done so far?
ANAT2341 group projects
Project 1 - Rabbit | Project 2 - Fly | Project 3 - Zebrafish | Group Project 4 - Mouse | Project 5 - Frog | Students Page | Animal Development
UNSW Embryology Links
- Cardiovascular Slides Cardiovasular Lecture 7 2008 | Heart Lecture 2008 - 1 slide/page | Heart Lecture 2008 Slides - 4 slides/page | Heart Lecture 2008 Slides - 6 slides/page
- Cardiovascular Movies Heart Movies | Heart Looping | Atrial Septation | Realignment | Ventricular Septation | Heart Septation Models | Historic Heart Movie |
- Cardiovascular Notes Introduction | Abnormalities | Stage 13/14 | Stage 22 | Stage 22 Selected Highpower | Heart | Heart Rate | BloodBlood Vessels | Molecular | Lymphatic | Text only page | WWW Links | Postnatal | History - Harvey
- Placenta Slides Placenta Lecture 8 2008 | Placenta Lecture 2008 - 1 slide/page | Placenta Lecture 2008 Slides - 4 slides/page | Placenta Lecture 2008 Slides - 6 slides/page
- Placenta Movies Heart Movies | Heart Looping | Atrial Septation | Realignment | Ventricular Septation | Heart Septation Models | Historic Heart Movie |
- Placenta Notes Introduction | Abnormalities | Stage 13/14 | Human (Stage22) | Histology | Villi Development | Maternal Decidua | Vascular Beds | Molecular | Postnatal | Endocrine Placenta
- General Links System Notes | Development Timeline
Internet links
Embryo Images Unit: Embryo Images Online Early Cell Populations (cardiogenic section) | Cardiovascular Development | Week 3 Development | Week 4 Development | Heart Chambers and Outflow Tract | Atrioventricular Septation | Outflow Tract Septation | Ventricular Septation | Atrial Septation | Atrial Walls Aortic Arch Vessels | Changes at Birth
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
Course Content 2009
Embryology Introduction | Cell Division/Fertilization | Cell Division/Fertilization | Week 1&2 Development | Week 3 Development | Lab 2 | Mesoderm Development | Ectoderm, Early Neural, Neural Crest | Lab 3 | Early Vascular Development | Placenta | Lab 4 | Endoderm, Early Gastrointestinal | Respiratory Development | Lab 5 | Head Development | Neural Crest Development | Lab 6 | Musculoskeletal Development | Limb Development | Lab 7 | Kidney | Genital | Lab 8 | Sensory - Ear | Integumentary | Lab 9 | Sensory - Eye | Endocrine | Lab 10 | Late Vascular Development | Fetal | Lab 11 | Birth, Postnatal | Revision | Lab 12 | Lecture Audio | Course Timetable
Cite this page: Hill, M.A. (2024, April 20) Embryology 2009 Lab 4. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/2009_Lab_4
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G