Lecture 1A: CNS Development Flashcards Preview

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Flashcards in Lecture 1A: CNS Development Deck (16):
0

What is the order of the 3 stages or neural tube development?

Neural plate
Neural folds
Neural tube

1

When does the cranial neuropore close?

Day 27

2

When does the caudal neuropore close?

Day 30

3

What are the divisions of the tripartite brain from superior to inferior?

Prosencephalon
Mesencephalon
Rhombencephalon

4

What are the divisions of the pentapartite brain, from superior to inferior?

Telencephalon
Diencephalon
Mesencephalon
Metencephalon
Myelencephalon

5

What are the vital reflex centers of the medulla?

Cardiac, vasomotor, and respiration centers

6

What "centers" are in the pons?

Sleep and respiratory

7

What are peduncles?

Large fiber tracts that connect cerebellum to other parts of brain

8

What is anencephaly?

Cranial end of neural tube doesn't close

9

What is Arnold-Chiari deformity?

Inferior cerebellum & medulla elongated/protrude into vertebral canal,
Medulla & pons small/deformed,
Malformations of lower cranial nerves

10

What is spina bifida occulta?

Caudal end of neuropore doesn't close
*Normal spinal cord function

11

What is spina bifida cystica?

Sac-like cyst at caudal end of spine containing spinal cord or meninges
*Spinal cord may be impaired

12

What is a meningocele?

Form of spina bifida cystica, but only meninges found in sac,
*Spinal cord may be impaired

13

What is a meningomyelocele?

Form of spina bifida cystica with meninges and spinal cord in sac,
*Abnormal spinal cord growth, lower body paralysis

14

What is myeloschisis?

Failure of caudal neural folds to close,
*Most severe of defects

15

What is holoprosencephaly?

Failure of prosencephalon to divide into 2 hemispheres,
Associated with facial deformities