What is the neural crest - Study guides, Class notes & Summaries

Ectoderm doesn't move through the __________ or __________ ANSWER: 1) blastopore (frogs and fishes) or 2) primitive streak (birds and humans) Sensory organs all begin in the head as... ANSWER: placode - thickenings of surface ectoderm what are 4 types of cell interactions? ANSWER: 1) Internal/mechanical 2) Juxtacrine signaling 3) Paracrine signaling 4) Endocrine signaling Note: these are arranged in order of closest interaction to longest distance interaction The 6 word key to ...

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...

Irene Gold - General Anatomy Questions and Answers Latest Updated Graded A+. What embryo layer are the gut and respiratory tract derived from? - Correct Answer: Endoderm What are the four subgroups that arise from mesoderm? - Correct Answer: Paraxial Intermediate Head Lateral plate What embryo layer do somites arise from? - Correct Answer: Mesoderm - paraxial What embryo layer are the urogenital system and kidneys derived from? - Correct Answer: Mesoderm - intermediate What embryo layer...

final exam all bio 4400, Cell Fate and Specification, Exam 2: Neurulation, Exam 2: Neurons, Exam 2 - Neural Crest cells, Exam 2: Sensory placodes and organs, Cell-cell interactions and signaling Ectoderm doesn't move through the __________ or __________ - CORRECT ANSWER 1) blastopore (frogs and fishes) or 2) primitive streak (birds and humans) Sensory organs all begin in the head as... - CORRECT ANSWER placode - thickenings of surface ectoderm what are 4 types of cell interact...

PNS and Pharyngeal Development Questions And Answers | Latest Update 1. The secondary palate is formed from the: A) Maxilla B) Mandible C) Lateral palatine processes D) Incisive papilla Answer: C) Lateral palatine processes________________________________________ 2. Which pharyngeal arch is responsible for the formation of the maxilla and mandible? A) First arch B) Second arch C) Third arch D) Fourth arch Answer: A) First arch________________________________________ 3. What structur...

USAHS Clinical Neuroscience Exam Questions with Complete Solutions 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 embryologi...

USAHS Clinical Neuroscience 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 th...

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...

final exam all bio 4400, Cell Fate and Specification, Exam 2: Neurulation, Exam 2: Neurons, Exam 2 - Neural Crest cells, Exam 2: Sensory placodes and organs, Cell-cell interactions and signaling Ectoderm doesn't move through the __________ or __________ - CORRECT ANSWER 1) blastopore (frogs and fishes) or 2) primitive streak (birds and humans) Sensory organs all begin in the head as... - CORRECT ANSWER placode - thickenings of surface ectoderm what are 4 types of cell interact...

Irene Gold - General Anatomy Questions and Answers Latest Updated Graded A+. What embryo layer are the gut and respiratory tract derived from? - Correct Answer: Endoderm What are the four subgroups that arise from mesoderm? - Correct Answer: Paraxial Intermediate Head Lateral plate What embryo layer do somites arise from? - Correct Answer: Mesoderm - paraxial What embryo layer are the urogenital system and kidneys derived from? - Correct Answer: Mesoderm - intermediate What embryo layer...