Chapter 4 Development of the Nervous System Flashcards
which week of gestation period by which CNS reaches developement?
25th week
what is the critical period for brian’s development?
3-16 weeks
When does the neural tube close?
During the fourth week
Neural crest develops as ____ while neural tube ____
PNS, CNS
at the end of 4th week of gestation how many vesicles are formed?
3 - Prosencephlon, mesencephalon rhombencephalon,
Mix and match the following Telencephalon becomes the
* Diencephalon becomes the
* Mesencephalon: becomes the
* Metencephalon becomes the
* Myelencephalon becomes the
- cerebral hemispheres 2. thalamus and
the hypothalamus, retina, and others 3. midbrain 4. pons and the
cerebellum 5. medulla
The forebrain of the embryo fails to develop into two hemispheres. causes which disorder?
Holoprosencephaly
what causes it causes defects in the development of the face and in brain structure and function?
Holoprosencephaly
Defective closure of neural tube can cause?
Spinal bifida or anencephaly
Malformations in the brain can be caused by __ and __ of neurons
Proliferation and migration
developmental
disorders is caused by altered brains tructures? what is the reason behind this alteration?
Defective Neural migration
in individuals with developmental dyslexia
what was observed in their brain regions?
reduced gray matter in
temporo-parietal conjunction areas
When do dendrites form?
develop a few
months before birth and are primitive at birth
True or false GM development continues well into one’s 30s
false WM does
till what ages do each of the cortexs continue to develop? 1. Sensorimotor cortex, parietal and temporal assoication cortex 3. prefrontal cortx
6, 10, 16
