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Flashcards in 1. Overview of NS and Development Deck (27)
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1

What are glia?

Non-neuronal cells in the central and peripheral nervous system

2

What are microglia?

Macrophages in the brain and spinal cord

3

What are the functions of astrocytes?

Provide structural support
Form the BBB

4

What is the function of oligodendrocytes?

Form myelin in the CNS

5

What are the functions of ependymal cells?

Line ventricles
Produce CSF

6

What are the 4 lobes of the cerebrum?

Frontal
Parietal
Occipital
Temporal

7

What structures make up the hindbrain?

Cerebellum
Pons
Medulla

8

What does the brainstem consist of?

Midbrain
Pons
Medulla

9

What are association fibres?

Interconnect cortical sites on one cerebral hemisphere

10

What are comissural fibres?

Connect cerebral cortex to subcortical structures

11

What does ipsilateral mean?

Same side

12

What does contralateral mean?

Opposite side

13

What does it mean to decussate?

Switch from 1 side to the other

14

What are the meningeal layers?

Pia mater
Subarachnoid space
Arachnoid mater
Subdural space
Dura mater
Extradural space

15

Which layer is the CSF found?

Subarachnoid space

16

What arises from the ectoderm?

Epidermis
Nervous system

17

What arises from the mesoderm?

Bone
Muscle
Connective tissue

18

What arises from the endoderm?

GIT
Respiratory tract

19

What does the oropharyngeal membrane become?

Mouth

20

What does the cloacal membrane become?

Anus

21

What is found at the cranial end of the primitive streak?

Notochord
-Cartilaginous rod-like structure
-lies under neural tube

22

What do neural crest cells differentiate into?

Neurons and glial cells
Medulla of adrenal gland
Pigment containing epidermal cells
Skeletal and connective tissue of head

23

What day does zipping occur?

22

24

What does zipping accomplish?

Neuralisation is complete
CNS is now a closed tube

25

What does the telencephalon become?

Cerebrum

26

What does the diencephalon become?

Thalamus
Hypothalamus

27

What does the rhombencephalon/metancephalon become?

Pons
Cerebellum
Medulla