Notochordal System Development

Flashcards covering key terms and concepts related to the development of the notochordal system and its role in embryonic development.

Notochordal Process

A tube that extends from the primitive node to the precordial plate, important in early embryonic development.

Neuroenteric Canal

A temporary channel that allows communication between the amniotic cavity and the yolk sac, formed during notochordal development.

Definitive Notochord

The solid rod structure formed from the notochordal plate after it has detached from the endoderm and proliferated.

Nucleus Pulposus

The jelly-like material found in the center of intervertebral discs, derived from remnants of the notochord.

Gastrulation

The process that transforms the bilaminar disc into a trilaminar disc by forming the three germ layers: ectoderm, mesoderm, and endoderm.

Ectoderm

The outer layer of the trilaminar disc, which will develop into skin and nervous tissue.

Mesoderm

The middle layer of the trilaminar disc, responsible for forming muscles, bones, and the circulatory system.

Endoderm

The innermost layer of the trilaminar disc, which will form the gastrointestinal tract and related structures.

Primitive Node

The structure at the anterior end of the primitive streak, where the notochordal process begins.

Precordial Plate

The area at the anterior end of the embryo that is precursory to the head and neck structures.