L16 Cells and Organisation of the Nervous System

Description

• Name the five main types of glial cells and their functions, and contrast these with neuronal structure and function • Describe the structure of a neuron, and understand how it is specialised for conduction of nerve impulses • Describe how the electrical nerve impulse changes to a chemical signal at the synapse • Understand the directions of information flow in the nervous system
Mer Scott
Quiz by Mer Scott, updated more than 1 year ago
Mer Scott
Created by Mer Scott over 7 years ago
18
1

Resource summary

Question 1

Question
Glia are [blank_start]support[blank_end] for the nervous system. There are 4 types in the [blank_start]CNS[blank_end], and 1 type in the [blank_start]PNS[blank_end]. These types are highly specialised for [blank_start]different[blank_end] functions. Neurons are cells specialised for [blank_start]transport[blank_end] of information. They can transmit [blank_start]many[blank_end] types of information, and there are [blank_start]thousands[blank_end] of types of neurons!
Answer
  • support
  • CNS
  • PNS
  • different
  • similar
  • transport
  • storage
  • many
  • 5
  • thousands
  • hundreds

Question 2

Question
Which cell of the CNS provides nutrients to neurons and ensheaths blood capillaries?
Answer
  • Astrocyctes
  • Oligodendrocytes
  • Ependymal cells
  • Microglia

Question 3

Question
What is the role of microglia?
Answer
  • To engulf microorganisms and debris, acting as immune cells for the neurons.
  • To supply nutrients to cells and ensheath blood capillaries.
  • To circulate the CSF.
  • To support and ensheath neurons.

Question 4

Question
Ependymal cells have cilia and line fluid filled cavities in the brain and spinal cord.
Answer
  • True
  • False

Question 5

Question
In the PNS the axons are sheathed by oligodendrocytes. In the CNS they are myelinated by Schwann cells.
Answer
  • True
  • False

Question 6

Question
The axon hillock precedes the summation zone.
Answer
  • True
  • False

Question 7

Question
Which type of synapse is most common in the CNS?
Answer
  • Axodendritic
  • Axosomatic
  • Axoaxonic
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