12 Questions
Which type of muscle differentiates from splanchnic mesoderm surrounding the gut and its derivatives?
Smooth muscle
From which type of mesoderm do the limb muscles develop by epitheliomesenchymal transformation?
Paraxial mesoderm
Which embryonic cells give rise to myoblasts, the embryonic muscle cells?
Mesenchymal cells
What activates transcription of muscle-specific genes and is considered an important regulatory gene for the induction of myogenic differentiation?
MyoD
Which type of muscle is derived from the neural crest in the head region?
Skeletal muscle
What process is dependent on the degree of mesenchymal cell differentiation for the induction of myogenesis by MyoD?
Epitheliomesenchymal transformation
What is the first indication of myogenesis according to the text?
Activation of gene expression in myogenic cells
What are the characteristic organelles that form in the cytoplasm of myotubes during muscle growth?
Myofibrils
Where do myogenic precursor cells originate from in response to molecular signals?
Paraxial mesoderm
Which muscle-specific basic helix-loop-helix transcription factors are activated in precursor myogenic cells according to the text?
MyoD, MyoG, Myf-5, MRF4
What results in the ongoing muscle growth in the fetus according to the text?
Fusion of myoblasts and myotubes
Where do cells migrate to from the dorsomedial edge of the dermomyotome according to the text?
Dermatome
Test your knowledge on the development of the muscular system from mesoderm, including the differentiation of myoblasts and the role of MyoD in activating muscle-specific genes.
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