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Found Mesoderm 15 times.

Displaying results 1 to 10.

1. Acoelomate
A triploblastic organism which does not have an internal body cavity other than the gut. The area between the gut and the organism's outer body wall is completely filled with tissue derived from the mesoderm . The term is used to classify multicellular animals by developmental pattern.

2. Coelom
An internal fluid-filled body cavity (other than the gut) within an organism; it lies between the gut (derived from the endoderm ) and the outer body wall (derived from the ectoderm ) and is lined entirely with tissue derived from the mesoderm . It is formed from the mesoderm during embryo nic development. It is found in triploblastic animals called coelomate s.

3. Coelomate
A triploblastic organism which has an internal, fluid-filled body cavity which originated from the mesoderm during embryo nic development. This cavity surrounds the gut, may contain various other organs, and is called a coelom . It differs from the pseudocoel s of the pseudocoelomate s because it is not derived from the blastocoel . The term is used to classify multicellular animals by developmental pattern.

4. Coelomates
Animals that have a coelom or body cavity lined with mesoderm .

5. Gastrula
A hollow ball of cell s with one part of the ball pushed into the interior blastocoele (called an invagination). This early stage of animal embryonic development forms just after the blastula stage. By the end of the gastrulation process, the different embryonic germ layer s ( endoderm , ectoderm , and sometimes mesoderm ) can clearly be identified.

6. Gastrulation
A process during early embryonic development in animals in which large-scale cell migration occurs and different cell types emerge to form the germ layer s ( endoderm , ectoderm , and sometimes mesoderm ). The stage takes place just after the blastula stage and begins with an invagination (indenting) of the hollow ball of cells. During this process, the embryo is called a gastrula .

7. Germ layer
A layer of cell s produced during the process of gastrulation during the early development of the animal embryo , which is distinct from other such layers of cells, as an early step of cell differentiation . The three types of germ layers are the endoderm , ectoderm , and mesoderm .

8. Mesoderm
A middle layer of tissue in a developing animal embryo which will eventually become the muscles and other connective tissues, the blood vessels and blood cells (if any), and various other organs, structures, and systems (depends on the organism). Animals with this layer of tissue as an embryo are known as triploblast ic animals, which includes all animals except for sponges, placozoans, jellyfish, and comb jellies.

9. Mesoderm
The middle layer of cells in embryonic development; gives rise to muscles, bones, and structures associated with reproduction. The middle embryonic tissue layer. Cells and structures arising from the mesoderm include the bone, blood, muscle, skin, and reproductive organs.

10. Notochord
In chordates, a cellular rod that runs the length of the body and provides dorsal support. Also, a structure of mesoderm in the embryo that will become the vertebrae of the spinal column. The stiff rod-like structure that all members of the Phylum Chordata develop at some stage during their life.

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