2014 Group Project 5
2014 Student Projects | ||||
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2014 Student Projects: Group 1 | Group 2 | Group 3 | Group 4 | Group 5 | Group 6 | Group 7 | Group 8 | ||||
The Group assessment for 2014 will be an online project on Fetal Development of a specific System.
This page is an undergraduate science embryology student and may contain inaccuracies in either description or acknowledgements. |
Cardiovascular
--Mark Hill (talk) 15:16, 26 August 2014 (EST) OK you have some headings, how about some content, references, sources for each section. See Lab 3 Assessment.
Introduction
- The cardiovascular system is one of the first systems to function within the embryo
- The heart begins to function during the 4th week
[Textbook- Larsen's Human Embryology, 4th ed.]
Timeline
--Z3418340 (talk) 00:21, 27 August 2014 (EST)
File:Development of the fetal heart.jpeg
(From Textbook- Larsen's Human Embryology, 4th ed. - http://www.mdconsult.com.wwwproxy0.library.unsw.edu.au/books/page.do?eid=4-u1.0-B978-0-443-06811-9..10012-0&isbn=978-0-443-06811-9&uniqId=462162262-2#4-u1.0-B978-0-443-06811-9..10012-0--fig42)
Primordial heart tube
- Arises predominantly from splanchnic mesoderm in the cardiogenic region
- Initially bilateral, the cardiogenic region cranially merges to form a horseshoe
- During the third week (Approximately day 18), angioblastic chords develop in the cardiogenic mesoderm. It forms the bilateral endocardial heart tubes
- Lateral folding of the embryo brings the heart tubes into the ventral midline.
- Fusion of the heart begins cranially and extends caudally.
- Certain dilations appear in the heart tube including:
- Truncus arteriosus
- Bulbus cordis
- Primordial ventricle
- Primordial atrium
- Sinus venosus (further divided into right horn and left horn)
Heart tube looping
- Most looping occurs in the fourth week of development and is completed by the fifth.
- The straight heart tube begins to elongate, most notably with growth in the bulbus cordis and primitive ventricle.
- This causes the heart to bend ventrally and rotate to the right- this forms a C-shaped loop.
- The ventricular bend moves caudally. The distance between outflow and inflow tracts diminishes
- The inflow (atrial) and outflow tracts converge. Myocardial cells are added forming the truncus arteriosus.
Atrial ventricular septation
Outflow tract
Heart valves
Vascular overview
Current Research
Historic Findings
[1] [2] https://www.youtube.com/watch?v=WXLPxjJszio
--Z3418340 (talk) 00:21, 27 August 2014 (EST)
Abnormalities
Atrial Septal Defect
Ventricular Septal Defect
Atrioventricular Septal Defect
- ↑ <pubmed>22709652</pubmed>