CMMB 403 Final Exam Questions and Answers 100% Solved
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Course
CMMB 403
Institution
CMMB 403
CMMB 403 Final Exam Questions and
Answers 100% Solved
What are the origins of the optic vesicle and the lens? - optic vesicle =
forebrain (neural ectoderm)
lens = surface epidermis --> placode
Describe the process of lens induction - 1. the optic vesicle (forebrain)
induces thickening of t...
pathway: neural crest cells migrate to the anterior sclerotome where they
either become the sympathetic ganglia or the dorsal root ganglia
Second - the more dorsolateral pathway: future melanocytes migrate
between the dermis and epidermis
Where are the cell bodies of the sensory neurons found? - ✔✔- found in
the dorsal root ganglia, not right in the central nervous system
What drives the migration of trunk neural crest through the anterior
sclerotome instead of the posterior? - ✔✔- the neural crest cells express
Eph receptors
- the posterior sclerotome expresses ephrins
- these repel eachother
What do the neural crest cells who stay in the anterior sclerotome become?
- ✔✔if they stay in the anterior sclerotome --> become more dorsal cell
types DRG
What do the neural crest cells who are repulsed and migrate out of the
anterior sclerotome become? - ✔✔cells that migrate out of the anterior
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