Path 2 CNS Flashcards Preview

Test 7 > Path 2 CNS > Flashcards

Flashcards in Path 2 CNS Deck (27):
1

Diencephalon

Thalamus & Hypothalamus

2

Telencephalon

Cerebrum & Basal Ganglia

3

Mesencephalon

Tectum & Tegmentum

4

Metencephalon

Cerebellum

5

Myelencephalon

Medulla

6

Neural tube defect cause

Low folate

7

Encephalocele

Protrusion of brain/meninges through openings in skull

8

Spina Bifida: 3 types

Occulta - Vertebral defect
Meningocele - Meninges
Meningomyelocele - Meninges + Spinal cord

9

Anencephaly

Lack of brain & skull

10

Micro/megalocephaly causes

Abnormal cell proliferation/apoptosis

11

Periventricular heterotopia

Complete absence of neuronal migration from ventricles

12

Lissencephaly

Partial migration
No normal cortical layers

13

Polymicrogyria

Late stage migration disrupted
Cobblestone gyri

14

Holoprosencephaly

Absence of forebrain division
Can lead to cyclopia

15

Dandy-Walker malformation

Cerebellar vermis malformation
Massively dilated posterior fossa (4th ventricle)
Absent cerebellum, hydrocephalus

16

Arnold-Chiari malformation

Cerebellar tonsils block foramen magnum, cause hydrocephalus, unnoticed until adult life

17

Hydromyelia

Dilatation of spinal canal due to CSF

18

Syringomyelia

Fluid filled cavity (syrinx) within spinal cord, leads to cystic degeneration

19

Syringomyelia presentation

Pain & temperature sensory loss (spinothalamic tract, anterior white commissure)
Dorsal column spared

20

Greenstick fracture

Bone is not completely separated

21

Comminuted fracture

Broken in three or more pieces

22

Basal skull fracture signs

Raccoon eyes
Battle's sign
CSF otorrhea or rhinorrhea

23

Dementia pugilistica

Due to repetitive concussions

24

Plaque jaune

Brownish old injury (contusion)
Can become epileptic foci

25

Epidural Hematoma

Lucid period before neurologic signs
Subfalcine herniation

26

Subdural hematoma

Due to tearing of bridging veins

27

Subdural hematoma prognosis

Often self-limiting
Possible chronic bleeding due to thin walled granulation vessels