Mesoderm Quiz: Difference between revisions

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|| The  the middle layer of the trilaminar embryo is the '''mesoderm''' (meaning middle layer), while most of these cells are mesemchymal in appearance, this term is used to describe the cell histological appearance/organization.
|| The  the middle layer of the trilaminar embryo is the '''mesoderm''' (meaning middle layer), while most of these cells are [[M#mesenchyme|mesemchymal]] in appearance, this term is used to describe the cell histological appearance/organization.


{The intraembryonic coelom forms within :
{The intraembryonic coelom forms within :
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- neural tube
- neural tube
- intermediate mesoderm
- intermediate mesoderm
||The intraembryonic coelom forms initially small spaces  in the mesoderm layer and coalesce to form a single large "horseshoe-shaped" space within the '''lateral plate mesoderm''' around the embryonic disc. Both young somites (somitocoels) and the neural tube (neural tube lumen) do have cavities, but neither is called the intraembryonic coelom.
||The [[I#intraembryonic_coelom|intraembryonic coelom]] forms initially small spaces  in the mesoderm layer and coalesce to form a single large "horseshoe-shaped" space within the '''lateral plate mesoderm''' around the embryonic disc. Both young somites ([[S#somitocoel|somitocoels]]) and the neural tube (neural tube lumen) do have cavities, but neither is called the intraembryonic coelom. Note that in early development the intraembryonic coelom opens at places on the edge of the embryonic disc to the extraembryonic coelom.


{All paraxial mesoderm segments into somites.
{All paraxial mesoderm segments into somites.

Revision as of 17:35, 10 August 2009

Here are a few simple questions that relate to mesoderm development. Take the quiz and see what you know, if you get some wrong, try working through through the Embryology Lecture on Mesoderm.

Take the Quiz

1 Mesenchyme refers to the middle layer of the trilaminar embryo

true
false

2 The intraembryonic coelom forms within :

somites
lateral plate
neural tube
intermediate mesoderm

3 All paraxial mesoderm segments into somites.

true
false

4 Somites are developmental structures that contribute the following adult structures :

vertebra, notochord, dermis, skeletal muscle
vertebra, intervertebral discs, dermis, skeletal muscle
kidney, body wall connective tissue, sensory ganglia
kidney, gastrointestinal tract smooth muscle, mesentry