Embryology Chapter 9: Heart Tube Development

<p>Sinus Venosus (A)</p> Signup and view all the answers

<p>Formation of the pericardial cavity (A)</p> Signup and view all the answers

<p>Dextral Looping (C)</p> Signup and view all the answers

<p>Separation of two distinct heart structures (A)</p> Signup and view all the answers

<p>Inner layer of the pericardium (epicardium) (B)</p> Signup and view all the answers

<p>Dextrocardia (A)</p> Signup and view all the answers

<p>They establish left-right positional identity (D)</p> Signup and view all the answers

<p>Situs Inversus (A)</p> Signup and view all the answers

<p>Left ventricle (B)</p> Signup and view all the answers

<p>Bulboventricular loop twisting (A)</p> Signup and view all the answers

<p>The primitive node (C)</p> Signup and view all the answers

<p>It remains paired and receives multiple veins (A)</p> Signup and view all the answers

<p>Cilia at the primitive node (B)</p> Signup and view all the answers

<p>Development of body cavities (A)</p> Signup and view all the answers

<p>Cranio-caudal folding (A)</p> Signup and view all the answers

<p>Dorsal mesocardium (C)</p> Signup and view all the answers

<p>They bring the heart tubes to the midline (B)</p> Signup and view all the answers

<p>A factor that induces blood island formation (C)</p> Signup and view all the answers

<p>Foregut pocket (C)</p> Signup and view all the answers

<p>Position of the heart tube (A)</p> Signup and view all the answers

<p>Formation of the pericardial cavity (B)</p> Signup and view all the answers

Different parts of the embryo grow at different rates, causing shifts in the relative positions of organs.

The splanchnic mesoderm forms the myocardium (heart muscle) around the heart tube.

A connective tissue secreted by the myocardium.

The caudal part of the heart tube forms the inner layer of the pericardium.

A rare condition where the heart is located outside the chest because of failure of the heart or chest to correctly develop

The heart tube bends to the right (dextral looping) during development.

Endocardial tubes fuse, forming a single tube.

The heart tube has distinct inflow and outflow tracts that never completely fuse.

The right and left coeloms merge, later dividing to form body cavities (pericardial, pleural, and abdominal).

Body cavity that surrounds and protects the heart, formed from the intraembryonic coelom.

The embryo changes shape from a flat disc to a cylinder during development from growth differentials and folding movements.

Forebrain growth and the descending movement of heart tubes/coelom onto the ventral surface, resulting in the re-orientation of the heart.

Side parts of the embryo folding inward towards the midline, creating a cylindrical shape, and bringing the heart tubes together.

Structure that moves beneath the developing heart influencing heart development and diaphragm formation.

Connective tissue sling that suspends the heart tube during early development.

The truncus arteriosus and bulbous cordis fold to the right, while the atria and sinus venosus bend to the left, positioning the heart chambers correctly.

A condition where the heart is positioned on the right side of the body, due to improper looping.

The body's development into a non-symmetrical form.

Cilia located at the primitive node and are vital in setting up signaling cascades for left-right axis specification.

A process determined by the primitive node cilia, establishing asymmetrical patterns for body development.

A condition where organs are positioned in a mirror-image to their usual locations, caused by abnormal left-right axis specification.

A paired structure in the primitive heart that develops into part of the definitive heart.