notochord
(Science: embryology) An axial mesodermal tissue found in embryonic stages of all chordates and protochordates, often regressing as maturity is approached. Typically a rod shaped mass of vacuolated cells. It lies immediately below the nerve cord and may provide mechanical strength to the embryo.
Dictionary > Notochord
You will also like...
Fruits, Flowers, and Seeds
This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..
Genetics – Lesson Outline & Worksheets
Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..
Animal Growth Hormones
Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..
Dominance
This tutorial presents Gregor Mendel's law of dominance. Learn more about this form of inheritance and how it can be pre..
Running Water Freshwater Communities
This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..
Still Water Community Plants
This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..