Home
Flashcards
Preview
Neuro Lecture 3
Home
Get App
Take Quiz
Create
When is the Embryonic stage and what occurs then?
2-8 weeks
Organs are formed
Limb buds form
Cephalocaudal development
When does the Fetal Stage occur and forms then?
8th week until birth
Newer systems are built upon older systems
Nervous system continues to develop after birth
When does the Neural Plate form?
Day 18 of gestation
What does the neural plate differentiate to create?
Neural tube
Neural crest
What does the neural crest become?
PNS
What does the neural tube become?
CNS
When do the ends of the neural tube close?
Crainial end closes on day 24 of gestation
Caudal end closes on day 28 of gestation
Name the 3 primordial cell types
Ectoderm
Mesoderm
Endoderm
What does the endoderm become?
Digestive and respiratory components
What does the mesoderm become?
Skeletal muscles
Heart
Ciculatory system
Skeletal system
Genitourinary system
What does the ectoderm become?
Sensory organs
Epidermis
Nervous System
What are the 3 primary vesicles of the neural tube?
Prosencephalon
Mesencephalon
Rhombencephalon
Name the 5 secondary vesicles of the Neural Tube
Telencephalon
Diencephalon
Mesencephalon
Metencephalon
Myelencephalon
What do the 5 secondary vesicles become?
Telencephalon - Cerebral cortex
Diencephalon - Der
Mesencephalon - Midbrain
Metencephalon - Pons and cerebellum
Myelencephalon - Medulla
When does myelination begin?
4th gestational month
What are some causes of congenital anomalies?
Genetic
Malnutrition
Drugs or abnormal hormone levels
Decreased oxygen
Environmental
What are three ways Spinda Bifida can present?
Myelomeningocele
Meningcele
Lipomeningocele
What are three complications of a Myelomeningocele?
Chiari malformation
Hydrocephalus
Tethered cord
What is a syrinx?
Pocket of cerebral spinal fluid trapped in the spinal cord
What are some signs of a pressence of a syrinx?
Paralysis, clonus, babinski reflex, hypertonicity (spasticity), hyperreflexive
How is hydrocephalus usally corrected?
With a V-P shunt
(Ventriculo-peritoneal)
What is Tetherd Cord?
Complication of Spina Bifida
Medical Emergency
Solution
: Cut filum terminale
What is anencephaly?
Class of failure of the neural tube to close rostrally
Author
paffman7
ID
61119
Card Set
Neuro Lecture 3
Description
Development of the Nervous System
Updated
2011-01-26T20:39:26Z
Show Answers
Home
Flashcards
Preview