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HNN - Week 1 > Introduction to the Nervous system > Flashcards

Flashcards in Introduction to the Nervous system Deck (59)
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1

Name for skull minus mandible?

Cranium 

2

Order of the thyroid, oesophagus and trachea from anterior to posterior? 

Thyroid 

Trachea 

Oesophagus 

3

Multipolar typically have many of what sturcture? They have just one of what structure? 

Dendrites - extensive dendritic tree 

A single axon 

4

Bipolar have how many Dendrites and Axons, at opposite poles? 

1 axon and 1 Dendrite 

5

Unipolar neurones have one of what structure, biforcating into central forms?  

Axon 

6

Unipolar (pseudo bipolar) neurones have no true what?

Dendrites 

7

Dorsal root ganglion neurones are an example of what type of neurone? 

Why is this?

Unipolar neurone 

Because these neurones are sensory and are only required to "sense" from one location,which is then transmitted back via the axon to the CNS.

8

Cranial nerve neuronal bodies are found in what structure? 

Motor nuclei of the brain stem 

9

Name 4 types of glia cells in the CNS 

Ependymal cells 

Oligodendrocytes 

Microglia 

Astrocytes 

10

name the two types of peripheral glial cells

Satellite cells 

Schwann cells

11

Function of ependymal cells, where are they found 

Line brain cavities (such as ventricles) 

important for synthesis of CSF 

 

12

Functions of oligodendrocytes 

Generate myelin in the CNS 

13

Function of microglia 

Immune cells in the CNS (macrophages) 

14

Function of astrocytes 

  • Contribute to formation of BBB
  • important sources of neurotransmitters 
  • Metabolic and mechanical support to neurones 

15

function of Satellite cells

  • Provide support to neuronal in ganglia (sensory + automatic), physically surround them 

16

function of Schwan cells 

Myelinated nerves in the periphery 

17

The foremen that allows passage of the spinal cord in the skull is ?

Foramen Magnum

18

What is the function of the motor cortex of the cerebrum? 

responsible for voluntary control of movements, carrying signals to the lower motor neurones. 

19

Function of premolar cortex 

Involved in the planning of voluntary movements 

20

What is a sulcus? 

A "dip" or "crevice" on the cerebral surface 

21

What is a gyri  on the cerebrum?

A ridge 

Gy"ri" for "ridge

22

What is meant by a nuclei? 

Bundle of nerve bodies in the CNS 

23

What is meant be ganglia?

Bundle of nerve bodies in the PNS 

24

Explain the difference between ganglia and nuclei 

Nuclei are bundles of nerve bodies in the CNS 

Ganglia are bundles of nerve bodies in the PNS 

25

What are ascending tracts? 

Group of axons that transmit information from the periphery to brain 

26

What are descending tracts? 

Groups of axons that transmit information from the brain to the periphery 

27

There are two major motor (or descending) tracts. name them 

Pyramidal 

Extrapyramidal 

28

Tracts are in which matter of the spinal cord? 

White 

29

State the function of pyramidal tracts

  • Responsible for the voluntary control of muscles of body 

30

Where do pyramidal tracts originate from? Where do they carry motor fibres to?

  • Cerebral cortex 
  • The brain stem and spinal cord i