The primitive node (or primitive knot) is the organizer for gastrulation in most amniote embryos. In birds, it is known as Hensen's node, and in amphibians...

the cranial (anterior) end of the disc, the primitive streak expands into an area known as the primitive node which is the organizer for gastrulation. In...

central pair of microtubules are found in the cells of the embryonic primitive node; termed nodal cells, these nodal cilia are responsible for the left-right...

responsible for initiating and coordinating the heartbeat Primitive knot or primitive node, the organizer tissue for gastrulation in vertebrates The place...

serves as the basis for the nervous system. Cranial to the primitive node of the embryonic primitive streak, ectodermal tissue thickens and flattens to become...

fertilized eggs occurs early in development. Partial splitting of the primitive node and streak may result in the formation of conjoined twins. These twins...

by way of the primitive streak which establishes bilateral symmetry. A primitive node (or primitive knot) forms in front of the primitive streak which...

The progenitor notochord is derived from cells migrating from the primitive node and pit. The notochord forms during gastrulation and soon after induces...

fish, and the primitive streak in birds and mammals. Each is controlled by the dorsal lip and primitive node (also known as Hensen's node), respectively...

in cells comprising the primitive node (node) of the developing embryo and functions to define the shape of the primitive node, help develop the lateral...

knob-like thickening termed the primitive node or knot, (known as Hensen's knot in birds). A shallow groove, the primitive groove, appears on the surface...

an attribute spreadsheet editor. The Geometry Nodes utility also has the capability of creating primitive meshes. In Blender 3.0, support for creating...

differences in the development between mice and humans. Fate mapping Primitive node Neurulation Vegetal rotation Urry, Lisa (2016). Campbell Biology (11th ed...

embryogenesis, playing a key role in signal transfer from the primitive node, in the anterior primitive streak, to lateral plate mesoderm (LPM). Nodal signaling...

tree of primitive Pythagorean triples is a mathematical tree in which each node represents a primitive Pythagorean triple and each primitive Pythagorean...

of the epiblast to the center midline. The primitive node is situated at the anterior end of the primitive streak and serves as the organizer for gastrulation...

(left-side-turn) in the anterior tip of the primitive node (a.k.a. Spemann-Mangold organizer in amphibians or Hensen's node in birds), the left-right situs of...

and so rotate clockwise rather than beat; in the primitive node at the anterior end of the primitive streak in the embryo, these are angled posteriorly...

three geometric primitives: A node is a point with a geographic coordinate expressed in the WGS 84 coordinate system. A standalone node represents a point...

stroke for cilia.3 During early development, the cilia found on the primitive node will beat in a directional pattern, sending signaling molecules to the...

expression in the portion of the primitive streak that will differentiate into the node (also referred to as the primitive node). The PEE turns on Nodal expression...

endoderm and blocks the action of BMP, Nodal and Wnt, secreted by the primitive node, which allows for the formation of a head region. This is accomplished...

anterior/posterior axis formation and facilitates the regression of the primitive node. Hox genes area also critical for the proper orientation of the head...

migration determines the cell movements that accompany the formation of the primitive streak, and helps to orient the embryo, and create bilateral symmetry...

responsible for gastrulation, left-right patterning and induction of the primitive node. As NODAL protein diffuse through an embryo, it triggers Nodal Signaling...

In other words, every primitive triple will be a "parent" to three additional primitive triples. Starting from the initial node with a = 3, b = 4, and...

nodes. Edges with own identity: Edges are primitive entities just like nodes. When multiple edges connect two nodes, these are different edges. A multigraph...

Pacemaker cells develop in the primitive atrium and the sinus venosus to form the sinoatrial node and the atrioventricular node respectively. Conductive cells...

These abnormal rhythms start from either the atria or atrioventricular node. They are generally due to one of two mechanisms: re-entry or increased automaticity...

axis come from the primitive node. The other important site is the anterior visceral endoderm (AVE). The AVE lies anterior to the node's most anterior position...