Week 1: Neurological System Development Flashcards
1
Q
When does most of the brain develop?
A
By 8 weeks, during the fetal stage
2
Q
Describe the progression of brain structures
A
- Neural plate –> Neural tube
- Neural tube –> brain and spinal cord
- Brain –> Ventricles; brainstem and cortex sections
- Spinal cord –> sclerotome, myotome, dermatome
3
Q
At what age does the spinal cord stop growing?
A
Age 4-5
4
Q
At what vertebral level does the spinal cord end up at?
A
L1-L2
5
Q
At what age is the brain 95% the size of an adults?
A
6
6
Q
At what age does myelination complete?
A
Early 20s
7
Q
At what age does full brain development occur?
A
25
8
Q
Growing into a deficit
A
Neurological deficits are not seen until the time that a trait would normally be seen, such as walking
9
Q
Tethered spinal cord
A
- Adherence of the spinal cord to a bony vertebrae
- Causes lower limb sensory and motor deficits
- Will manifest as a child get taller, putting tension on the spinal cord
10
Q
Neural tube disorders
A
- Affects formation of the brain
- Chiari malformation
- Spina bifida
11
Q
Chiari malformation
A
- Noticed at an early age
12
Q
Spina bifida
A
- Noticed at an early age
13
Q
Non-progressive abnormalities
A
- Fetal drug syndromes
- Cerebral palsy
14
Q
Fetal drug syndromes
A
- Malformation of critical areas
- May grow into deficit if the area affected is a cognitive area
15
Q
Cerebral palsy
A
- Movement and postural control
- Varies in severity
- Damage to a developing brain
