USMLE STEP 1 Neurology Exam Practice Questions and Answers (100% Pass)
5 views 0 purchase
Course
USMLE
Institution
USMLE
USMLE STEP 1 Neurology Exam Practice
Questions and Answers (100% Pass)
The notochord induces what to differentiate into what? - Answer️️ -
Induces overlying ECTODERM to differentiate into NEUROECTODERM
and form NUERAL PLATE
Neural plate then gives rise to? - Answer️️ -Neural tube and n...
USMLE STEP 1 Neurology Exam Practice
Questions and Answers (100% Pass)
The notochord induces what to differentiate into what? - Answer✔️✔️-
Induces overlying ECTODERM to differentiate into NEUROECTODERM
and form NUERAL PLATE
Neural plate then gives rise to? - Answer✔️✔️-Neural tube and neural crest
cells
Notochord becomes what? - Answer✔️✔️-Nucleus pulposus of the
intervertebral disks in adults
Alar Plate - Answer✔️✔️-Dorsal [Sensory]
Same orientation as spinal cord
Basal Plate - Answer✔️✔️-Ventral [Motor]
Same orientation as the spinal cord
How does FGF affect chordin and noggin? - Answer✔️✔️-FGF regulates
chordin and noggin to down regulate BMP which leads to neural plate
induction
Three Primary Vesicles - Answer✔️✔️-1. Forebrain [Prosencephalon]
Holoprosencephaly - Answer✔️✔️-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
Chiari Type II Malformation - Answer✔️✔️-Posterior fossa malformation
Significant HERNIATION of the CEREBELLAR TONSILS and VERMIS
through FORAMEN MAGNUM with AQUEDUCTAL STENOSIS and
HYDROCEPHALUS
Patients often present w/:
1. Lumbosacral meningomyelocele
2. Paralysis below the defect
Dandy-Walker Malformation - Answer✔️✔️-AGENESIS of CEREBELLAR
VERMIS with CYSTIC ENLARGEMENT of the 4th ventricle
Fills enlarged posterior fossa
Associated w/:
4
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller SophiaBennett. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
