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=Gastrointestinal and Respiratory Development = * Understanding of three main GIT embryonic divisions and developmental mechanical events.

...tructure ([[E#epiblast|epiblast]] and [[H#hypoblast|hypoblast]]). In human development, this occurs during the second week ({{GA}} week 4). The epiblast layer wil ...sults indicate that the critical remodelling events at this stage of human development are embryo-autonomous, highlighting the remarkable and unanticipated self-o

...elopment of the [[N#notochord|notochord]] occurring during week 3 of human development. ...|buccopharyngeal]] (top) membranes. The raised region in the middle of the embryonic disc is the [[P#primitive node|primitive node]] ([[H#Hensen's node|Hensen's

...erent stages of development. Even today the best way to observe anatomical development and relationships is by direct observation in serial sections through the e ...has a set of selected images showing more detail of some organ and tissue development. In addition, there are now 3D animations based upon reconstruction of the

...rt and the distribution of individual blood vessels at this early stage of development. Below the animation is a more complete description of this system. ...art 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, t

...e graph 02.jpg|thumb|400px|link=One Minute Embryology#Human Timeline|Human development timeline]] ...rly events of embryonic development. The third week is the begining of the embryonic period which continues through to week eight.

| Development of the [[N#neural plate|neural plate]] region at the embryonic disc stage. Dorsal view of the embryonic disc from the amniotic cavity side showing the ectoderm with the central re

'''Links:''' [[Bat Development]] [[Media:Bat embryo stage 19.mov|Quicktime]] | [[Movie - Bat embryo stage ...Cancer Center, who provided images and stage information on the embryonic development of the bat.

Above images show face development through week 6 to week 7 (1mm scale markings). ===Development of the Face===

[[Image:Basic Heart Development Timeline.jpg|center|800px]] [[Image:Early Development of Heart Tube.jpg|thumb|right|upright=2|The developing blood vessels and he

Development of the [[N#neural plate|neural plate]] region at the Week 3 embryonic disc stage. Dorsal view of the embryonic disc from the amniotic cavity side showing the ectoderm with the central re

...s (like the cloacal membrane at the other end of the disc). Folding of the embryonic disc will change its relative position. ...membrane an differentiates to form then notochord. The notochord regulates development, both differentiation and folding, in the surrounding tissues. The regulati

| Development of the [[N#neural plate|neural plate]] region at the embryonic disc stage. Dorsal view of the embryonic disc from the amniotic cavity side showing the ectoderm with the central re

The embryonic structure which establishes body axes and patterns surrounding tissues is c ...direction of embryonic disc folding (mechanical). These images are of the embryonic disc in week 3 (stage 7).

...rt and the distribution of individual blood vessels at this early stage of development. Below the animation is a more complete description of this system. ...art 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, t

* [[Lecture - Gastrointestinal Development|Endoderm - Gastrointestinal Tract]] * [[Lecture - Early Vascular Development|Cardiovascular - Heart]]

==The Embryonic Period== :''Development of Organs and Tissues''

...s (like the cloacal membrane at the other end of the disc). Folding of the embryonic disc will change its relative position. ...membrane an differentiates to form then notochord. The notochord regulates development, both differentiation and folding, in the surrounding tissues. The regulati

...o reference to animal models of development. See also the notes on [[Fetal Development]]. [[Embryonic Development]] section of notes covers development before later system formation.

This early mitosis is a unique embryonic cell cycle (M, S, M phases) compared to adult (M, G₁, S, G<sub>2 ...in the blastomeres in two-cell {{mouse}} embryos affected the selection of embryonic cell lineages. Mechanistically, HMGA1 promotes the expression of the ICM-sp