Somite formation
12 important questions on Somite formation
When does somitogenesis start?
Briefly explain the steps of somitogenesis
2. Condensation of somitomeres to form somites
Which somitomeres don't participate in somite formation?
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When does the first somite appear?
How many pairs of somites are produced per day?
How many pairs of somites are produced at the end of somitogenesis?
How many pairs of occipital somites are produced and what structures do they give rise to?
Occipital part of skull, bones around nose, eyes, inner ear,extrinsic ocular muscles, muscles of tongue
How many pairs of cervical somites are produced and what structures do they give rise to?
Occipital bone, cervical vertebrae and muscles, part of dermis,part of upper limb musculature
How many pairs of thoracic somites are produced and what structures do they give rise to?
Vertebrae, muscles and bones of thoracic wall, thoracic dermis, part of abdominal wall, part of upper limb musculature
How many pairs of lumbar somites are produced and what structures do they give rise to?
Lumbar vertebrae, abdominal muscles and dermis, leg musculature
How many pairs of sacral somites are produced and what structures do they give rise to?
Sacrum, dermis, musculature
How many pairs of coccygeal somites are produced and what structures do they give rise to?
Coccyx, dermis, musculature
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