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Questions and Answers
During the 4th week of development, what do the somites differentiate into?
During the 4th week of development, what do the somites differentiate into?
- Lateral plate mesoderm and somitomeres
- Neural tube and somatomeres
- Sclerotomes and dermomyotomes (correct)
- Notochord and intermediate mesoderm
What migrates ventromedially during the formation of the mesenchymal vertebral column?
What migrates ventromedially during the formation of the mesenchymal vertebral column?
- Lateral plate mesoderm
- Intermediate mesoderm
- Dermomyotomes
- Sclerotomes (correct)
What differentiates into a less condensed cephalic part and a more condensed caudal part during the formation of the mesenchymal vertebral column?
What differentiates into a less condensed cephalic part and a more condensed caudal part during the formation of the mesenchymal vertebral column?
- Notochord
- Sclerotomic segment (correct)
- Intermediate mesoderm
- Dermomyotome
Which stage in the development of the vertebral column involves the formation of cartilaginous structures?
Which stage in the development of the vertebral column involves the formation of cartilaginous structures?
Which structure appears as the first sign during specialization of the mesoderm in vertebral column development?
Which structure appears as the first sign during specialization of the mesoderm in vertebral column development?
What typically transmits a spinal ganglion and a ventral root of a spinal nerve through each intervertebral foramen?
What typically transmits a spinal ganglion and a ventral root of a spinal nerve through each intervertebral foramen?
The cells of the sclerotomes migrate dorsolaterally to surround the spinal cord and notochord during the formation of the mesenchymal vertebral column.
The cells of the sclerotomes migrate dorsolaterally to surround the spinal cord and notochord during the formation of the mesenchymal vertebral column.
The mesenchymal column retains its segmental origin as the sclerotomic segments are separated by dense areas containing the intersegmental arteries.
The mesenchymal column retains its segmental origin as the sclerotomic segments are separated by dense areas containing the intersegmental arteries.
During the 4th week of development, the somites differentiate into somites and dermomyotomes.
During the 4th week of development, the somites differentiate into somites and dermomyotomes.
Each sclerotomic segment differentiates into a more condensed cephalic part and a less condensed caudal part during the formation of the mesenchymal vertebral column.
Each sclerotomic segment differentiates into a more condensed cephalic part and a less condensed caudal part during the formation of the mesenchymal vertebral column.
The stage of ossification of the vertebral column occurs before the stage of formation of cartilaginous vertebral column.
The stage of ossification of the vertebral column occurs before the stage of formation of cartilaginous vertebral column.
The intervertebral foramina typically transmit a spinal ganglion and a dorsal root of a spinal nerve.
The intervertebral foramina typically transmit a spinal ganglion and a dorsal root of a spinal nerve.
Specialization of the ectoderm is a key process in the development of the vertebral column.
Specialization of the ectoderm is a key process in the development of the vertebral column.
Only two collections of mesoderm appear lateral to the notochord during the development of the vertebral column.
Only two collections of mesoderm appear lateral to the notochord during the development of the vertebral column.
The appearance of three collections of mesoderm lateral to the notochord is accompanied by the disappearance of the notochord.
The appearance of three collections of mesoderm lateral to the notochord is accompanied by the disappearance of the notochord.
The double sheets of lateral plate mesoderm do not play a role in the development of the vertebral column.
The double sheets of lateral plate mesoderm do not play a role in the development of the vertebral column.
