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Flashcards in Quiz Deck (18):
0

How is nervous system communication different to endocrine?

Faster

1

What is function of motor neurones

Produces response to sensory information (perception) to affect change

2

4 internal sensory neurones

Stretch receptor
Baroreceptor
Osmoreceptor
Chemoreceptors

3

Name 2 branches of autonomic NS and their main action

Sympathetic - fight flight
Parasympathetic- rest digest

4

What do motor neurones in enteric NS do?

Govern motility, secretions

5

What is grey matter made of

Cell bodies

6

What are the little branches at the receiving end of a neuron called?

Dendrites

7

What is main symptom of Bell's palsy

Sudden facial paralysis

8

What group people most often affected by MS

Women 20-50

9

4 types of neuroglia found in CNS

Astrocytes
Oligodendrocytes
Microglia
Ependymal cells

10

What do ependymal cells do

Make and circulate CSF

11

Which type neuroglia make up BBB

Astrocytes

12

Which neuroglia are phagocytic

Microglia

13

Function of myelin sheath

Insulate neurons - allows faster conduction of nerve impulses

14

Gaps between Schwann cells called

Nodes of ranvier

15

Can CNS nerves regenerate

No, glial cells inhibit growth

16

Describe conditions inside and outside a neurons at resting potential

Outside is rich in Na and Cl
Inside is rich in K and large negative ions
Membrane polarised -70mV

17

What happens during an action potential

Depolarisation - sodium channels open, sodium floods in
Repolarisation- potassium channels open and potassium floods out

Sodium and potassium are now on wrong side of membrane