Neural crest - Study guides, Class notes & Summaries
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CMMB 403 Final Exam Actual Questions and Answers with complete solution
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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/...
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USAHS Clinical Neuroscience exam 2023/2024 with 100% correct answers
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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...
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AAPD QE Board Exam Questions and Answers | New One | Grade A+
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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...
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NBCE SAMPLE QUESTIONS PART 1: ANATOMY QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED.
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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...
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USAHS Clinical Neuroscience Exam Questions and Answers 100% Pass
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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 ...
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NBME 30, 29, 28, 27, 26, 25 || Already Passed.
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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...
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USAHS Clinical Neuroscience Exam with Verified solutions| Rated A+
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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...
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USAHS Clinical Neuroscience Exam Questions and Answers 100% Pass
- Exam (elaborations) • 27 pages • 2024
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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 ...
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Endocrinology USMLE Step 1: Questions & Answers: Updated A+ Score Solutions
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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...
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USMLE STEP 1 Neurology Questions And Answers With Verified Updates
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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...
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