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Question 1

Somites form soon after the beginning of gastrulation, on both sides of the neural tube, from a tissue called the ________________. epithelium
dermatome
presomitic mesoderm
neural tube

Question 2

Soon after their formation, somites become subdivided into the ______________ dorsally, which gives rise to the muscles and dermis, and the _____________ ventrally, which will form the spine components. spinous process, cauda equina
dermomyotome, sclerotome
chordamesoderm, somitomeres
ectoderm, endoderm