Neural crest - Study guides, Class notes & Summaries

CMMB 403 Final Exam Actual Questions and Answers with complete solution What are the origins of the optic vesicle and the lens? - answeroptic vesicle = forebrain (neural ectoderm) lens = surface epidermis --> placode Describe the process of lens induction - answer1. the optic vesicle (forebrain) induces thickening of the surface epidermis (prospective lens placode) 2. the optic vesicle pinches in to form the optic cup and the lens invaginate as well (lens placode comes into contact w/...

What are the 5 steps of neurological development in order? - correct answer Neurulation, cell proliferation, migration and aggregation, formation of axonal and dendritic processes, and synaptogenesis ______________ involves the formation of the neural crest and neural tube. - correct answer Neurulation Cell proliferation occurs within the ________ _______. - correct answer Neural tube During the migration and aggregation phase of embryological development the cells migrate/aggrega...

What layer do neural crest cells develop from? Ans: Ectoderm At what embryonic age does the dental lamina begin to develop? Ans: 6 weeks What are the three components of the tooth bud? Ans: Enamel Organ Dental papilla Dental sac What are the three morphologic stages of a developing tooth bud? Ans: Bud stage Cap stage Bell stage GRADE A+ During the bell stage invagination of the epithelium occurs, which layer is essential for enamel production? Ans: Stratum intermedium Which cel...

NBCE SAMPLE QUESTIONS PART 1: ANATOMY QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. Which of the following pulses can be palpated just proximal to the hypothenar pad? a) Subclavian b) Brachial c) Radial d) Ulnar - -d) Ulnar Calcitonin is secreted by which of the following cells? a) Parafollicular b) Follicular c) Chief d) Macrophages - -a) Parafollicular Which of the following muscles is the medial rotator of the hip? a) Gluteus maximus b) Gluteus medius c) Obturator internus d) Qu...

USAHS Clinical Neuroscience Exam Questions and Answers 100% Pass What are the 5 steps of neurological development in order? - Answer- Neurulation, cell proliferation, migration and aggregation, formation of axonal and dendritic processes, and synaptogenesis ______________ involves the formation of the neural crest and neural tube. - Answer- Neurulation Cell proliferation occurs within the ________ _______. - Answer- Neural tube During the migration and aggregation phase of embryological ...

Shortly after delivery, a full term male newborn is found to have black hair with a white forelock. His mom, has white forelock & hearing aids. Heterochromia of irides. Bilateral sensorineural hearing loss. Cause of findings? A) abnormal neural crest development B) abnormality of connexins C) Deficiency of homogentistic acid oxidase activity D) Deficiency of tyrosinase activity E) Failure of internalization of melanin granules of keratinocytes F) Failure of melanosome transportation a...

What are the 5 steps of neurological development in order? - Neurulation, cell proliferation, migration and aggregation, formation of axonal and dendritic processes, and synaptogenesis ______________ involves the formation of the neural crest and neural tube. - Neurulation Cell proliferation occurs within the ________ _______. - Neural tube During the migration and aggregation phase of embryological development the cells migrate/aggregate within _________ locations. - Definitive True or fa...

USAHS Clinical Neuroscience Exam Questions and Answers 100% Pass What are the 5 steps of neurological development in order? - Answer- Neurulation, cell proliferation, migration and aggregation, formation of axonal and dendritic processes, and synaptogenesis ______________ involves the formation of the neural crest and neural tube. - Answer- Neurulation Cell proliferation occurs within the ________ _______. - Answer- Neural tube During the migration and aggregation phase of embryological ...

what is the embryonal origin of the adrenal cortex? (Ans- mesoderm what is the embryonal origin of the adrenal medulla? what are the cells of the adrenal medulla called? (Ans- neural crest; chromaffin cells T/F the chromaffin cells of the adrenal cortex are are considered preganglionic (Ans- false- postganglionic and ganglionic sympathetic what autonomic is the adrenal medulla innervated by? what are the NT? what are the receptors called? what kind of receptors are they? (Ans- s...

Propofol - Used for sedation in the ICU, rapid anesthesia induction, short procedures LESS POST-OPERATIVE NAUSEA than thiopental Potentiates GABAA Holoprosencephaly - Failure of LEFT AND RIGHT HEMISPHERES TO SEPARATE Usually occurs during the 5th and 6th week May be related to mutations in the SONIC HEDGEHOG signaling pathway Moderate form = Cleft lip/palate Severe form = Cyclopia Seen in: 1. PATAU SYNDROME 2. FETAL ALCOHOL SYNDROME Neural plate then gives rise to? - Neural tube and n...