Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

Somites are differentiated portions
mesodermal tissue longitudinally
distributed the embryo. The
somites the muscle tissue and
of the connective tissues.