Student Page - here is the sample page I demonstrated with in the first labs.I remind all students that you have your own Group Forum on Moodle for your discussions, it is only accessible by members of your group.

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Heart

Mark Hill (talk) 16:06, 14 September 2017 (AEST) OK Feedback

This is very early stage of content development. Of all the possible topics this is definitely the MOST researched topic to date. You have this week to make significant progress on this page.
Where is the timeline of development.
Where is the timeline of key discoveries
Splanchnic mesoderm and neural crest contribution
Differentiation of different cardiac cell types
Cardiac conduction system development
Cardiomyocyte differentiation/function
Cardiac stem cells

Introduction

The cardiovascular system is the first system to develop and function in the human embryo. The rapid cardiac development is essential as the growing embryo can no longer receive oxygen and essential nutrients via diffusion alone, hence a circulatory system and a contractile heart mechanism is required to supply the embryo. We recognise the hearts normal development is vital for foetal life, and hence we have chosen to document the development of the heart from gastrulation to birth. Any defects occurring during the developmental processes can lead to congenital heart abnormalities. However, early cardiac development is a multifaceted procedure and is associated with other developmental processes such as: embryonic folding, coelom formation, and vascular development [1].

Through researching the advances in technology, coupled with the biological use of suitable animal models [2] our understanding of embryological cardiac development has evolved, and we are piecing together the mechanism underlying this development. This page will outline the importance of how heart abnormalities arise, the treatments available and the possible treatments to be developed in the future. Due to the major knowledge gaps in current embryological heart research, we acknowledge that this will impact our assignment, and aim to address further research concepts that will improve our understanding

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Developmental Origin

PubMed Searches:

[3] <pubmed>PMC1767747</pubmed>

[4]

[5]

[6]

Z5076019 (talk) 14:19, 26 August 2017

Developmental Timeline

Embryonic Developmental Timeline

week 4-5 - precardiac cells in primitive streak, bilateral cardiogenic areas form, mesoderm splitting, heart tube fusion week 6-7 - neural crest migration starts, dorsal and ventral endocardial cushions fused, foramen closes, septum secundum begins to develop week 8-9 - bulbular ridges and trabeculations evident, aortic and pulmonary trunks cleave, valves furthur developed, SA node identifiable

Historic Developmental Timeline

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Developmental Signalling Processes

Heart development is a very complicated and dynamic process that requires a high degree of control and regulation. This control is achieved by different molecular pathways expressed at different stages of heart development.

Wnt signalling

Both canonical and non-canonical Wnt signalling pathways have a role in different stages of cardiac development. These two pathways may have an overlapping role in in cardiac development or they may work independent. The canonical Wnt signalling pathway involves β-catenin and is activated by a number of ligands such as Wnt-1, Wnt-2, Wnt-3A, Wnt-8A, Wnt-8B, Wnt-8C, Wnt-10A, and Wnt-10B. However, the non-canonical signalling pathway is associated with planar cell polarity and Wnt/Ca2+ pathways that are activated by different ligands such as Wnt4, Wnt5A, Wnt5B, Wnt6, Wnt7A, Wnt7B, and Wnt11 ^[1].