somites

At stage 11, the embryo looks nothing like the animal it will become; it has a head-like thing at one end (the top in the picture on the right), a weird hole at the bottom (Hensen's node), and some blocky structures called somites in between.

Randomly growing an embryo. It can work. - The Panda's Thumb 2010

At stage 11, the embryo looks nothing like the animal it will become; it has a head-like thing at one end (the top in the picture on the right), a weird hole at the bottom (Hensen's node), and some blocky structures called somites in between.

The Panda's Thumb: August 2010 Archives 2010

At stage 11, the embryo looks nothing like the animal it will become; it has a head-like thing at one end (the top in the picture on the right), a weird hole at the bottom (Hensen's node), and some blocky structures called somites in between.

The Panda's Thumb: Steve Matheson Archives 2010

At stage 11, the embryo looks nothing like the animal it will become; it has a head-like thing at one end (the top in the picture on the right), a weird hole at the bottom (Hensen's node), and some blocky structures called somites in between.

The Panda's Thumb: Development Archives 2010

In vertebrates, the early formation of transient structures called somites that are the precursors of vertebrae is similarly periodic, depending on a rhythmic wave of gene expression that moves though the developing tissue.

PhysOrg.com - latest science and technology news stories 2010

As a flexible notochord develops in the back, blocks of tissue called somites form along each side of it.

Recently Uploaded Slideshows 2009

There are snakes that have more than 300 vertebrae and humans generally have 33 (the number of segments, or "somites" that initially form is somewhat larger).

The Origin of Form Was Abrupt Not Gradual 2008

Hence we shall give the name of "somites" or primitive segments to these so-called "primitive vertebrae."

The Evolution of Man — Volume 1 Ernst Heinrich Philipp August Haeckel 1876

For instance, somites, one of the body elements characteristic of the phylotypic stage, form under the influence of a somitic clock, rhythmic waves of molecular activity that sweep the length of the trunk and tail.

The Politically Incorrect Guide to Darwinism and Intelligent Design Review: Simply Incorrect Embryology (Chapter 3) - The Panda's Thumb 2006

Its segment-like somites are the origin of our vertebral column, ribs and certain muscles.

From Egg to Adult Fly 1995